ADV7183B Multiformat SDTV Video Decoder Data

ADV7183B Multiformat SDTV Video Decoder Data
Multiformat SDTV Video Decoder
ADV7183B
FEATURES
Multiformat video decoder supports NTSC-(J, M, 4.43),
PAL-(B/D/G/H/I/M/N), SECAM
Integrates three 54 MHz, 10-bit ADCs
Clocked from a single 27 MHz crystal
Line-locked clock-compatible (LLC)
Adaptive Digital Line Length Tracking (ADLLT™), signal
processing, and enhanced FIFO management give miniTBC functionality
5-line adaptive comb filters
Proprietary architecture for locking to weak, noisy, and
unstable video sources such as VCRs and tuners
Subcarrier frequency lock and status information output
Integrated AGC with adaptive peak white mode
Macrovision® copy protection detection
Chroma transient improvement (CTI)
Digital noise reduction (DNR)
Multiple programmable analog input formats
Composite video (CVBS)
S-Video (Y/C)
YPrPb component (VESA, MII, SMPTE, and BetaCam)
12 analog video input channels
Automatic NTSC/PAL/SECAM identification
Digital output formats (8-bit or 16-bit)
ITU-R BT.656 YCrCb 4:2:2 output + HS, VS, and FIELD
0.5 V to 1.6 V analog signal input range
Differential gain: 0.5% typ
Differential phase: 0.5° typ
Programmable video controls
Peak white/hue/brightness/saturation/contrast
Integrated on-chip video timing generator
Free-run mode (generates stable video output with no I/P)
VBI decode support for close captioning, WSS, CGMS, EDTV,
Gemstar® 1×/2×
Power-down mode
2-wire serial MPU interface (I2C®-compatible)
3.3 V analog, 1.8 V digital core; 3.3 V IO supply
2 temperature grades: 0°C to +70°C and –40°C to +85°C
80-lead LQFP Pb-free package
APPLICATIONS
DVD recorders
Video projectors
HDD-based PVRs/DVDRs
LCD TVs
Set-top boxes
Security systems
Digital televisions
AVR receivers
GENERAL DESCRIPTION
The ADV7183B integrated video decoder automatically detects
and converts a standard analog baseband television signalcompatible with worldwide standards NTSC, PAL, and SECAM
into 4:2:2 component video data-compatible with 16-/8-bit
CCIR601/CCIR656.
The advanced and highly flexible digital output interface
enables performance video decoding and conversion in linelocked clock-based systems. This makes the device ideally
suited for a broad range of applications with diverse analog
video characteristics, including tape-based sources, broadcast
sources, security/surveillance cameras, and professional
systems.
The 10-bit accurate A/D conversion provides professional
quality video performance and is unmatched. This allows true
8-bit resolution in the 8-bit output mode.
The 12 analog input channels accept standard composite,
S-Video, YPrPb video signals in an extensive number of
combinations. AGC and clamp restore circuitry allow an input
video signal peak-to-peak range of 0.5 V up to 1.6 V.
Alternatively, these can be bypassed for manual settings.
The fixed 54 MHz clocking of the ADCs and datapath for all
modes allows very precise, accurate sampling and digital
filtering. The line-locked clock output allows the output data
rate, timing signals, and output clock signals to be synchronous,
asynchronous, or line locked even with ±5% line length variation.
The output control signals allow glueless interface connections
in almost any application. The ADV7183B modes are set up
over a 2-wire, serial, bidirectional port (I2C-compatible).
The ADV7183B is fabricated in a 3.3 V CMOS process. Its
monolithic CMOS construction ensures greater functionality
with lower power dissipation.
The ADV7183B is packaged in a small 80-lead LQFP
Pb-free package.
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
© 2005 Analog Devices, Inc. All rights reserved.
ADV7183B* PRODUCT PAGE QUICK LINKS
Last Content Update: 02/23/2017
COMPARABLE PARTS
DESIGN RESOURCES
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• ADV7183B Material Declaration
• PCN-PDN Information
DOCUMENTATION
• Quality And Reliability
Application Notes
• Symbols and Footprints
• AN-1260: Crystal Design Considerations for Video
Decoders, HDMI Receivers, and Transceivers
DISCUSSIONS
Data Sheet
View all ADV7183B EngineerZone Discussions.
• ADV7183B: Multifromat SDTV Video Decoder Data Sheet
REFERENCE MATERIALS
SAMPLE AND BUY
Visit the product page to see pricing options.
Technical Articles
• Analog Video Time Base Correction and Processing for
Nonstandard TV Signals
• Optimizing standard-definition video on high-definition
displays
TECHNICAL SUPPORT
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number.
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ADV7183B
TABLE OF CONTENTS
Introduction ...................................................................................... 4
VBI Data Recovery..................................................................... 21
Analog Front End ......................................................................... 4
General Setup.............................................................................. 21
Standard Definition Processor (SDP)........................................ 4
Color Controls ............................................................................ 23
Functional Block Diagram .......................................................... 5
Clamp Operation........................................................................ 25
specifications ..................................................................................... 6
Luma Filter .................................................................................. 26
Electrical Characteristics............................................................. 6
Chroma Filter.............................................................................. 29
Video Specifications..................................................................... 7
Gain Operation........................................................................... 30
Timing Specifications .................................................................. 8
Chroma Transient Improvement (CTI) .................................. 33
Analog Specifications................................................................... 8
Digital Noise Reduction (DNR) ............................................... 34
Thermal Specifications ................................................................ 9
Comb Filters................................................................................ 35
Timing Diagrams.......................................................................... 9
AV Code Insertion and Controls ............................................. 37
Absolute Maximum Ratings.......................................................... 10
Synchronization Output Signals............................................... 39
ESD Caution................................................................................ 10
Sync Processing .......................................................................... 46
Pin Configuration and Function Descriptions........................... 11
VBI Data Decode ....................................................................... 47
Analog Front End ........................................................................... 13
Pixel Port Configuration ............................................................... 59
Analog Input Muxing ................................................................ 13
MPU Port Description................................................................... 60
Manual Input Muxing................................................................ 15
Register Accesses ........................................................................ 61
Global Control Registers ............................................................... 16
Register Programming............................................................... 61
Power-Save Modes...................................................................... 16
I2C Sequencer.............................................................................. 61
Reset Control .............................................................................. 16
IP2PC Register Maps ..................................................................... 62
Global Pin Control ..................................................................... 17
I2PC Register Map Details ........................................................... 66
18H
I2C Programming Examples.......................................................... 88
Global Status Registers................................................................... 19
52H
19H
Identification............................................................................... 19
Examples in this Section use a 28 MHz Clock. ...................... 88
53H
Status 1 ......................................................................................... 19
120H
Autodetection Result.................................................................. 19
Examples Using 27 MHz Clock................................................ 92
54H
12H
PCB Layout Recommendations.................................................... 94
5H
Status 2 ......................................................................................... 19
12H
Analog Interface Inputs ............................................................. 94
123H
Status 3 ......................................................................................... 19
56H
Power Supply Decoupling ......................................................... 94
124H
Standard Definition Processor (SDP).......................................... 20
57H
PLL ............................................................................................... 94
125H
SD Luma Path ............................................................................. 20
58H
Digital Outputs (Both Data and Clocks) ................................ 94
126H
SD Chroma Path......................................................................... 20
59H
Sync Processing........................................................................... 21
Digital Inputs .............................................................................. 94
60H
127H
Antialiasing Filters ..................................................................... 95
61H
Rev. B | Page 2 of 100
128H
ADV7183B
Crystal Load Capacitor Value Selection...................................95
62H
129H
Typical Circuit Connection ...........................................................96
63H
130H
Outline Dimensions........................................................................ 98
64H
13H
Ordering Guide ........................................................................... 98
65H
132H
REVISION HISTORY
9/05—Rev. A to Rev. B
Changes to Table 1 ............................................................................6
Changes to Table 2 ............................................................................7
Changes to Table 3 and Table 4 .......................................................8
Changes to Table 5 ............................................................................9
Change to Figure 6 ..........................................................................13
Change Formatting of Table 15 to Table 17 .................................19
Change to Figure 8 ..........................................................................21
Changes to Lock Related Controls Section..................................24
Changes to Table 34 ........................................................................32
Changes to Table Reference in BETACAM Section ...................33
Change to PAL Comb Filter Settings Section..............................37
Change to NFTOG Section............................................................44
Changes to Table 85 ........................................................................68
Changes to Table 86 ........................................................................72
6/05—Rev. 0 to Rev. A
Changed Crystal References to 28 MHz Crystal............ Universal
Changes to Features Section ............................................................1
Changes to Table 3 and Table 4 .......................................................8
Changes to Analog Specifications Section.....................................8
Changes to Table 7 ..........................................................................11
Changes to Clamp Operation Section..........................................26
Renamed Figure 14 and Figure 15 ................................................30
Changes to Table 31 ........................................................................31
Changed LAGC Register Address in Luma Gain Section .........32
Changed VSBHE VS Default .........................................................41
Changes to Table 55 ........................................................................43
Changes to Table 56 ........................................................................45
Changed Comments for CTAPSP[1:0] in Table 85 ....................81
Changes to Table 86 ........................................................................89
Changes to Table 87 ........................................................................90
Changes to Table 88 ........................................................................91
Changes to Table 89 ........................................................................92
Added Examples Using 27 MHz Clock Section..........................93
Added XTAL Load Capacitor Value Selection Section..............96
Changes to Ordering Guide...........................................................99
9/04—Revision 0: Initial Version
Rev. B | Page 3 of 100
ADV7183B
INTRODUCTION
The ADV7183B is a high quality, single chip, multiformat video
decoder that automatically detects and converts PAL, NTSC,
and SECAM standards in the form of composite, S-Video, and
component video into a digital ITU-R BT.656 format.
The advanced and highly flexible digital output interface enables
performance video decoding and conversion in line-locked,
clock-based systems. This makes the device ideally suited for a
broad range of applications with diverse analog video characteristics, including tape based sources, broadcast sources,
security/surveillance cameras, and professional systems.
ANALOG FRONT END
The ADV7183B analog front end comprises three 10-bit ADCs
that digitize the analog video signal before applying it to the
standard definition processor. The analog front end uses
differential channels to each ADC to ensure high performance
in mixed-signal applications.
The front end also includes a 12-channel input mux that enables
multiple video signals to be applied to the ADV7183B. Current
and voltage clamps are positioned in front of each ADC to
ensure the video signal remains within the range of the
converter. Fine clamping of the video signals is performed
downstream by digital fine clamping within the ADV7183B.
The ADCs are configured to run in 4× oversampling mode.
STANDARD DEFINITION PROCESSOR (SDP)
The ADV7183B is capable of decoding a large selection of
baseband video signals in composite, S-Video, and component
formats. The video standards supported include PAL B/D/I/G/H,
PAL60, PAL M, PAL N, PAL Nc, NTSC M/J, NTSC 4.43, and
SECAM B/D/G/K/L. The ADV7183B can automatically detect
the video standard and process it accordingly.
The ADV7183B has a 5-line, superadaptive, 2D comb filter that
gives superior chrominance and luminance separation when
decoding a composite video signal. This highly adaptive filter
automatically adjusts its processing mode according to video
standard and signal quality with no user intervention required.
Video user controls such as brightness, contrast, saturation, and
hue are also available within the ADV7183B.
The ADV7183B implements a patented adaptive digital linelength tracking (ADLLT) algorithm to track varying video line
lengths from sources. ADLLT enables the ADV7183B to track
and decode poor quality video sources such as VCRs, noisy
sources from tuner outputs, VCD players, and camcorders. The
ADV7183B contains a chroma transient improvement (CTI)
processor that sharpens the edge rate of chroma transitions,
resulting in sharper vertical transitions.
The ADV7183B can process a variety of VBI data services, such
as closed captioning (CC), wide screen signaling (WSS), copy
generation management system (CGMS), EDTV, Gemstar 1×/2×,
and extended data service (XDS). The ADV7183B is fully
Macrovision® certified; detection circuitry enables Type I, II,
and III protection levels to be identified and reported to the
user. The decoder is also fully robust to all Macrovision signal
inputs.
Rev. B | Page 4 of 100
12
04997-001
INPUT
MUX
SCLK
SDA
ALSB
CVBS
S-VIDEO
YPrPb
AIN1–
AIN12
A/D
CLAMP
10
10
10
SERIAL INTERFACE
CONTROL AND VBI DATA
SYNC PROCESSING AND
CLOCK GENERATION
A/D
A/D
CLAMP
CLAMP
Figure 1.
Rev. B | Page 5 of 100
CONTROL
AND DATA
ADV7183B
SYNC AND
CLK CONTROL
DECIMATION AND
DOWNSAMPLING
FILTERS
DATA
PREPROCESSOR
10
10
CHROMA
DIGITAL
FINE
CLAMP
STANDARD
AUTODETECTION
MACROVISION
DETECTION
GAIN
CONTROL
LINE
LENGTH
PREDICTOR
GAIN
CONTROL
GLOBAL CONTROL
CHROMA
FILTER
SYNC
EXTRACT
LUMA
FILTER
VBI DATA RECOVERY
CHROMA
DEMOD
FSC
RECOVERY
LUMA
DIGITAL
FINE
CLAMP
STANDARD DEFINITION PROCESSOR
CHROMA
2D COMB
(4H MAX)
CTI
C-DNR
AV
CODE
INSERTION
L-DNR
LUMA
2D COMB
(4H MAX)
FREE RUN
OUTPUT CONTROL
SYNTHESIZED
LLC CONTROL
CHROMA
RESAMPLE
RESAMPLE
CONTROL
LUMA
RESAMPLE
16
8
8
INTRQ
SFL
LLC2
LLC1
FIELD
VS
HS
PIXEL
DATA
ADV7183B
FUNCTIONAL BLOCK DIAGRAM
OUTPUT FORMATTER
ADV7183B
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
At AVDD = 3.15 V to 3.45 V, DVDD = 1.65 V to 2.0 V, DVDDIO = 3.0 V to 3.6 V, PVDD = 1.65 V to 2.0 V, operating temperature range, unless
otherwise specified.
Table 1.
Parameter 1, 2
STATIC PERFORMANCE
Resolution (each ADC)
Integral Nonlinearity
Differential Nonlinearity
DIGITAL INPUTS
Input High Voltage
Input Low Voltage
Input Current
0F
1F
Input Capacitance
DIGITAL OUTPUTS
Output High Voltage
Output Low Voltage
High Impedance Leakage Current
Output Capacitance
POWER REQUIREMENTS 5
Digital Core Power Supply
Digital I/O Power Supply
PLL Power Supply
Analog Power Supply
Digital Core Supply Current
Digital I/O Supply Current
PLL Supply Current
Analog Supply Current
Symbol
Test Conditions
N
INL
DNL
BSL at 54 MHz
BSL at 54 MHz
VIH
VIL
IIN
Min
Typ
Max
Unit
–0.475/+0.6
–0.25/+0.5
10
±3
–0.7/+2
Bits
LSB
LSB
0.8
+50
+10
10
V
V
μA
μA
pF
0.4
50
10
20
V
V
μA
μA
pF
2
Pins listed in Note 3
All other pins
–50
–10
ISOURCE = 0.4 mA
ISINK = 3.2 mA
Pins listed in Note 4
All other pins
2.4
2F
CIN
VOH
VOL
ILEAK
3F
COUT
4F
DVDD
DVDDIO
PVDD
AVDD
IDVDD
IDVDDIO
IPVDD
IAVDD
1.65
3.0
1.65
3.15
CVBS input 6
YPrPb input 7
5F
6F
Power-Down Current
Power-Up Time
IPWRDN
tPWRUP
1
Temperature range: TMIN to TMAX, –40°C to +85°C (0°C to 70°C for ADV7183BKSTZ).
The min/max specifications are guaranteed over this range.
3
Pins 36 and 79.
4
Pins 1, 2, 5, 6, 8, 12, 17, 18 to 24, 32 to 35, 74 to 76, 80.
5
Guaranteed by characterization.
6
ADC1 powered on.
7
All three ADCs powered on.
2
Rev. B | Page 6 of 100
1.8
3.3
1.8
3.3
82
2
10.5
85
180
1.5
20
2
3.6
2.0
3.45
V
V
V
V
mA
mA
mA
mA
mA
mA
ms
ADV7183B
VIDEO SPECIFICATIONS
At AVDD = 3.15 V to 3.45 V, DVDD = 1.65 V to 2.0 V, DVDDIO = 3.0 V to 3.6 V, PVDD = 1.65 V to 2.0 V, operating temperature range, unless
otherwise specified.
Table 2.
Parameter 1, 2
NONLINEAR SPECIFICATIONS
Differential Phase
Differential Gain
Luma Nonlinearity
NOISE SPECIFICATIONS
SNR Unweighted
7F
8F
Analog Front End Crosstalk
LOCK TIME SPECIFICATIONS
Horizontal Lock Range
Vertical Lock Range
FSC Subcarrier Lock Range
Color Lock In Time
Sync Depth Range
Color Burst Range
Vertical Lock Time
Autodetection Switch Speed
CHROMA SPECIFICATIONS
Hue Accuracy
Color Saturation Accuracy
Color AGC Range
Chroma Amplitude Error
Chroma Phase Error
Chroma Luma Intermodulation
LUMA SPECIFICATIONS
Luma Brightness Accuracy
Luma Contrast Accuracy
1
2
Symbol
Test Conditions
DP
DG
LNL
CVBS I/P, modulate 5-step
CVBS I/P, modulate 5-step
CVBS I/P, 5-step
Luma ramp
Luma flat field
Min
54
58
Typ
Max
Unit
0.5
0.5
0.5
0.7
0.7
0.7
Degrees
%
%
56
60
60
–5
40
dB
dB
dB
+5
70
±1.3
60
20
5
200
200
2
100
HUE
CL_AC
1
1
0.5
0.4
0.2
Degrees
%
%
%
Degrees
%
1
1
%
%
5
CVBS, 1 V I/P
CVBS, 1 V I/P
Temperature range: TMIN to TMAX, –40°C to +85°C (0°C to 70°C for ADV7183BKSTZ).
The min/max specifications are guaranteed over this range.
Rev. B | Page 7 of 100
%
Hz
Hz
Lines
%
%
Fields
Lines
400
ADV7183B
TIMING SPECIFICATIONS
Guaranteed by characterization. At AVDD = 3.15 V to 3.45 V, DVDD = 1.65 V to 2.0 V, DVDDIO = 3.0 V to 3.6 V, PVDD = 1.65 V to 2.0 V,
operating temperature range, unless otherwise specified.
Table 3.
Parameter 1, 2
SYSTEM CLOCK AND CRYSTAL
Nominal Frequency
Frequency Stability
I2C PORT
SCLK Frequency
SCLK Min Pulse Width High
SCLK Min Pulse Width Low
Hold Time (Start Condition)
Setup Time (Start Condition)
SDA Setup Time
SCLK and SDA Rise Time
SCLK and SDA Fall Time
Setup Time for Stop Condition
RESET FEATURE
Reset Pulse Width
CLOCK OUTPUTS
LLC1 Mark Space Ratio
LLC1 Rising to LLC2 Rising
LLC1 Rising to LLC2 Falling
DATA AND CONTROL OUTPUTS
Data Output Transitional Time
9F
1
2
10F
Symbol
Test Conditions
Min
Typ
Max
Unit
±50
MHz
ppm
28.6363
400
t1
t2
t3
t4
t5
t6
t7
t8
0.6
1.3
0.6
0.6
100
300
300
0.6
5
t9:t10
t11
t12
t13
Data Output Transitional Time
t14
Propagation Delay to Hi-Z
Max Output Enable Access Time
Min Output Enable Access Time
t15
t16
t17
kHz
μs
μs
μs
μs
ns
ns
ns
μs
ms
45:55
55:45
% duty cycle
ns
ns
3.4
ns
2.4
ns
0.5
0.5
Negative clock edge to start of
valid data; (tACCESS = t10 – t13)
End of valid data to negative clock
edge; (tHOLD = t9 + t14)
6
7
4
ns
ns
ns
Temperature range: TMIN to TMAX, –40°C to +85°C (0°C to 70°C for ADV7183BKSTZ).
The min/max specifications are guaranteed over this range.
ANALOG SPECIFICATIONS
Guaranteed by characterization. AVDD = 3.15 V to 3.45 V, DVDD = 1.65 V to 2.0 V, DVDDIO = 3.0 V to 3.6 V, PVDD = 1.65 V to 2.0 V (operating
temperature range, unless otherwise noted). Recommended analog input video signal range: 0.5 V to 1.6 V, typically 1 V p-p.
Table 4.
Parameter 1, 2
CLAMP CIRCUITRY
External Clamp Capacitor
Input Impedance
Large Clamp Source Current
Large Clamp Sink Current
Fine Clamp Source Current
Fine Clamp Sink Current
1F
1
2
12F
Symbol
Test Conditions
Clamps switched off
Temperature range: TMIN to TMAX, –40°C to +85°C (0°C to 70°C for ADV7183BKSTZ).
The min/max specifications are guaranteed over this range.
Rev. B | Page 8 of 100
Min
Typ
0.1
10
0.75
0.75
60
60
Max
Unit
μF
MΩ
mA
mA
μA
μA
ADV7183B
THERMAL SPECIFICATIONS
Table 5.
Parameter 1, 2
Junction-to-Case Thermal Resistance
Junction-to-Ambient Thermal Resistance (Still Air)
13F
1
2
Symbol
θJC
θJA
14F
Test Conditions
4-layer PCB with solid ground plane
4-layer PCB with solid ground plane
Min
Typ
7.6
38.1
Temperature range: TMIN to TMAX, –40°C to +85°C (0°C to 70°C for ADV7183BKSTZ).
The min/max specifications are guaranteed over this range.
TIMING DIAGRAMS
t3
t5
t3
SDA
t4
t7
t2
t8
2
Figure 2. I C Timing
t9
t10
OUTPUT LLC 1
t11
t12
OUTPUT LLC 2
t13
t14
04997-003
OUTPUTS P0–P15, VS,
HS, FIELD,
SFL
Figure 3. Pixel Port and Control Output Timing
OE
t15
t16
Figure 4. OE Timing
Rev. B | Page 9 of 100
04997-004
P0–P15, HS,
VS, FIELD,
SFL
t17
04997-002
t1
t6
SCLK
Max
Unit
°C/W
°C/W
ADV7183B
ABSOLUTE MAXIMUM RATINGS
Table 6.
Parameter
AVDD to GND
AVDD to AGND
DVDD to DGND
PVDD to AGND
DVDDIO to DGND
DVDDIO to AVDD
PVDD to DVDD
DVDDIO – PVDD
DVDDIO – DVDD
AVDD – PVDD
AVDD – DVDD
Digital Inputs Voltage to DGND
Digital Output Voltage to DGND
Analog Input to AGND
Maximum Junction Temperature
(TJ max)
Storage Temperature Range
Infrared Reflow Soldering (20 sec)
Rating
4V
4V
2.2 V
2.2 V
4V
–0.3 V to +0.3 V
–0.3 V to +0.3 V
–0.3 V to +2 V
–0.3 V to +2 V
–0.3 V to +2 V
–0.3 V to +2 V
–0.3 V to DVDDIO + 0.3 V
–0.3 V to DVDDIO + 0.3 V
AGND – 0.3 V to AVDD + 0.3 V
150°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
–65°C to +150°C
260°C
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the
human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. B | Page 10 of 100
ADV7183B
AIN12
AIN6
NC
RESET
NC
ALSB
SDA
SCLK
NC
NC
DGND
DVDD
P15
P14
P13
P12
NC
NC
OE
FIELD
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
VS 1
60
AIN5
59
AIN11
DGND 3
58
AIN4
DVDDIO 4
57
AIN10
P11 5
56
AGND
P10 6
55
CAPC2
P9 7
54
CAPC1
53
AGND
52
CML
DVDD 10
51
REFOUT
INTRQ 11
50
AVDD
SFL 12
49
CAPY2
NC 13
48
CAPY1
DGND 14
47
AGND
DVDDIO 15
46
AIN3
NC 16
45
AIN9
NC 17
44
AIN2
NC 18
43
AIN8
P7 19
42
AIN1
P6 20
41
AIN7
PIN 1
HS 2
ADV7183B
P8 8
TOP VIEW
(Not to Scale)
DGND 9
Figure 5. 80-Lead LQFP Pin Configuration
Rev. B | Page 11 of 100
04997-005
AGND
AGND
PVDD
ELPF
PWRDN
NC
NC
P0
P1
DGND
DVDD
XTAL
XTAL1
LLC1
LLC2
NC
P2
P3
P4
NC = NO CONNECT
P5
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
ADV7183B
Table 7. Pin Function Descriptions
Pin No.
3, 9, 14, 31, 71
39, 40, 47, 53, 56
4, 15
10, 30, 72
50
38
42, 44, 46, 58, 60,
62, 41, 43, 45, 57,
59, 61
11
Mnemonic
DGND
AGND
DVDDIO
DVDD
AVDD
PVDD
AIN1 to AIN12
Type
G
G
P
P
P
P
I
Description
Digital Ground.
Analog Ground.
Digital I/O Supply Voltage (3.3 V).
Digital Core Supply Voltage (1.8 V).
Analog Supply Voltage (3.3 V).
PLL Supply Voltage (1.8 V).
Analog Video Input Channels.
INTRQ
O
13, 16 to 18, 25, 34,
35, 63, 65, 69, 70,
77, 78
33, 32, 24, 23, 22,
21, 20, 19, 8, 7, 6, 5,
76, 75, 74, 73
2
1
80
67
68
66
NC
Interrupt Request Output. Interrupt occurs when certain signals are detected on the input
video. See the interrupt register map in Table 83.
No Connect Pins.
P0 to P15
O
Video Pixel Output Port.
HS
VS
FIELD
SDA
SCLK
ALSB
O
O
O
I/O
I
I
64
RESET
I
27
LLC1
O
26
LLC2
O
29
XTAL
I
28
XTAL1
O
36
PWRDN
I
79
OE
I
37
ELPF
I
12
SFL
O
51
REFOUT
O
52
CML
O
48, 49
CAPY1, CAPY2
I
54, 55
CAPC1, CAPC2
I
Horizontal Synchronization Output Signal.
Vertical Synchronization Output Signal.
Field Synchronization Output Signal.
I2C Port Serial Data Input/Output Pin.
I2C Port Serial Clock Input. Maximum clock rate of 400 kHz.
This pin selects the I2C address for the ADV7183B. ALSB set to Logic 0 sets the address for a
write as 0x40; for ALSB set to logic high, the address selected is 0x42.
System Reset Input, Active Low. A minimum low reset pulse width of 5 ms is required to
reset the ADV7183B circuitry.
This is a line-locked output clock for the pixel data output by the ADV7183B. Nominally
27 MHz, but varies up or down according to video line length.
This is a divide-by-2 version of the LLC1 output clock for the pixel data output by the
ADV7183B. Nominally 13.5 MHz, but varies up or down according to video line length.
This is the input pin for the 28.6363 MHz crystal, or can be overdriven by an external 3.3 V,
27 MHz clock oscillator source. In crystal mode, the crystal must be a fundamental crystal.
This pin should be connected to the 28.6363 MHz crystal or left as a no connect if an
external 3.3 V, 27 MHz clock oscillator source is used to clock the ADV7183B. In crystal
mode, the crystal must be a fundamental crystal.
A logic low on this pin places the ADV7183B in a power-down mode. Refer to the IP2PC
Register Maps section for more options on power-down modes for the ADV7183B.
When set to a logic low, OE enables the pixel output bus, P15 to P0 of the ADV7183B. A
logic high on the OE pin places Pins P15 to P0, HS, VS, SFL into a high impedance state.
The recommended external loop filter must be connected to this ELPF pin, as shown in
Figure 46.
Subcarrier Frequency Lock. This pin contains a serial output stream that can be used to lock
the subcarrier frequency when this decoder is connected to any Analog Devices, Inc. digital
video encoder.
Internal Voltage Reference Output. Refer to Figure 46 for a recommended capacitor network
for this pin.
The CML pin is a common-mode level for the internal ADCs. Refer to Figure 46 for a
recommended capacitor network for this pin.
ADC’s Capacitor Network. Refer to Figure 46 for a recommended capacitor network for
this pin.
ADC’s Capacitor Network. Refer to Figure 46 for a recommended capacitor network for
this pin.
13H
134H
135H
136H
137H
138H
139H
Rev. B | Page 12 of 100
ADV7183B
ADC_SW_MAN_EN
AIN1
AIN7
AIN2
AIN8
AIN3
AIN9
AIN4
AIN10
AIN5
AIN11
AIN6
AIN12
AIN3
AIN9
AIN4
AIN10
AIN5
AIN11
AIN6
AIN12
AIN2
AIN8
AIN5
AIN11
AIN6
AIN12
INSEL[3:0]
INTERNAL
MAPPING
FUNCTIONS
ADC0_SW[3:0]
1
0
ADC0
ADC1_SW[3:0]
1
0
ADC1
ADC2_SW[3:0]
1
0
ADC2
04997-006
AIN1
AIN7
AIN2
AIN8
AIN3
AIN9
AIN4
AIN10
AIN5
AIN11
AIN6
AIN12
ANALOG FRONT END
Figure 6. Internal Pin Connections
ANALOG INPUT MUXING
The ADV7183B has an integrated analog muxing section that
allows more than one source of video signal to be connected to
the decoder. Figure 6 outlines the overall structure of the input
muxing provided in the ADV7183B.
140H
As seen in Figure 6, the analog input muxes can be controlled
by functional registers (INSEL) or manually. Using INSEL[3:0]
simplifies the setup of the muxes and minimizes crosstalk
between channels by pre-assigning the input channels. This is
referred to as ADI recommended input muxing.
14H
Control via an I2C manual override (ADC_sw_man_en,
ADC0_sw, and ADC1_sw, ADC2_sw) is provided for
applications with special requirements (for example, number/
combinations of signals) that would not be served by the preassigned input connections. This is referred to as manual input
muxing.
Refer to Figure 7 for an overview of the two methods of
controlling the ADV7183B’s input muxing.
142H
ADI Recommended Input Muxing
A maximum of 12 CVBS inputs can be connected and decoded
by the ADV7183B. As seen in Figure 5, this means the sources
will have to be connected to adjacent pins on the IC. This calls
for a careful design of the PCB layout, such as ground shielding
between all signals routed through tracks that are physically
close together.
143H
INSEL[3:0] Input Selection, Address 0x00[3:0]
The INSEL bits allow the user to select an input channel as well
as the input format. Depending on the PCB connections, only a
subset of the INSEL modes is valid. The INSEL[3:0] not only
switches the analog input muxing, it also configures the
standard definition processor core to process CVBS (Comp),
S-Video (Y/C), or component (YPbPr) format.
Rev. B | Page 13 of 100
ADV7183B
CONNECTING
ANALOG SIGNALS
TO ADV7183B
ADI RECOMMENDED
INPUT MUXING; SEE TABLE 9
SET INSEL[3:0] FOR REQUIRED
MUXING CONFIGURATION
NO
SET INSEL[3:0] TO
CONFIGURE ADV7183B TO
DECODE VIDEO FORMAT:
CVBS: 0000
YC: 0110
YPrPb: 1001
USE MANUAL INPUT MUXING
(ADC_SW_MAN_EN, ADC0_SW,
ADC1_SW, ADC2_SW)
04997-007
YES
Figure 7. Input Muxing Overview
Table 8. Input Channel Switching Using INSEL[3:0]
INSEL[3:0]
0000 (default)
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Table 9. Input Channel Assignments
Description
Analog Input Pins
Video Format
CVBS1 = AIN1
Composite
CVBS2 = AIN2
Composite
CVBS3 = AIN3
Composite
CVBS4 = AIN4
Composite
CVBS5 = AIN5
Composite
CVBS6 = AIN6
Composite
Y1 = AIN1
Y/C
C1 = AIN4
Y/C
Y2 = AIN2
Y/C
C2 = AIN5
Y/C
Y3 = AIN3
Y/C
C3 = AIN6
Y/C
Y1 = AIN1
YPrPb
PB1 = AIN4
YPrPb
PR1 = AIN5
YPrPb
Y2 = AIN2
YPrPb
PB2 = AIN3
YPrPb
PR2 = AIN6
YPrPb
CVBS7 = AIN7
Composite
CVBS8 = AIN8
Composite
CVBS9 = AIN9
Composite
CVBS10 = AIN10
Composite
CVBS11 = AIN11
Composite
Input
Channel
AIN7
AIN1
AIN8
AIN2
AIN9
AIN3
AIN10
AIN4
AIN11
AIN5
AIN12
AIN6
Pin
No.
41
42
43
44
45
46
57
58
59
60
61
62
ADI Recommended Input Muxing Control
INSEL[3:0]
CVBS7
CVBS1
Y/C1-Y
YPrPb1-Y
CVBS8
CVBS2
Y/C2-Y
YPrPb2-Y
CVBS9
CVBS3
Y/C3-Y
YPrPb2-Pb
CVBS10
CVBS4
Y/C1-C
YPrPb1-Pb
CVBS11
CVBS5
Y/C2-C
YPrPb1-Pr
Not available
CVBS6
Y/C3-C
YPrPb2-Pr
ADI recommended input muxing is designed to minimize
crosstalk between signal channels and to obtain the highest
level of signal integrity. Table 9 summarizes how the PCB layout
should connect analog video signals to the ADV7183B.
14H
It is strongly recommended to connect any unused analog input
pins to AGND to act as a shield.
Inputs AIN7 to AIN11 should be connected to AGND when
only six input channels are used. This improves the quality of
the sampling due to better isolation between the channels.
AIN12 is not under the control of INSEL[3:0]. It can be routed
to ADC0/ADC1/ADC2 only by manual muxing. See Table 10
for details.
145H
Rev. B | Page 14 of 100
ADV7183B
MANUAL INPUT MUXING
Restrictions in the channel routing are imposed by the analog
signal routing inside the IC; every input pin cannot be routed to
each ADC. Refer to Figure 6 for an overview on the routing
capabilities inside the chip. The three mux sections can be
controlled by the reserved control signal buses ADC0/ADC1/
ADC2_sw[3:0]. Table 10 explains the control words used.
By accessing a set of manual override muxing registers, the
analog input muxes of the ADV7183B can be controlled
directly. This is referred to as manual input muxing.
146H
Manual input muxing overrides other input muxing control
bits, such as INSEL.
147H
The manual muxing is activated by setting the
ADC_SW_MAN_EN bit. It affects only the analog switches in
front of the ADCs. This means if the settings of INSEL and the
manual input muxing registers (ADC0/ADC1/ADC2_sw)
contradict each other, the ADC0/ADC1/ADC2_sw settings
apply, and INSEL is ignored.
SETADC_sw_man_en, Manual Input Muxing Enable,
Address 0xC4[7]
ADC0_sw[3:0], ADC0 mux configuration, Address 0xC3[3:0]
ADC1_sw[3:0], ADC1 mux configuration, Address 0xC3[7:4]
ADC2_sw[3:0], ADC2 mux configuration, Address 0xC4[3:0]
Manual input muxing controls only the analog input muxes.
INSEL[3:0] still has to be set so the follow-on blocks process the
video data in the correct format. This means INSEL must still
be used to tell the ADV7183B whether the input signal is of
component, Y/C, or CVBS format.
Table 10. Manual Mux Settings for All ADCs (SETADC_sw_man_en = 1)
ADC0_sw[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
ADC0 Connected to
No connection
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
No connection
No connection
AIN7
AIN8
AIN9
AIN10
AIN11
AIN12
No connection
ADC1_sw[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
ADC1 Connected to
No connection
No connection
No connection
AIN3
AIN4
AIN5
AIN6
No connection
No connection
No connection
No connection
AIN9
AIN10
AIN11
AIN12
No connection
Rev. B | Page 15 of 100
ADC2_sw[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
ADC2 Connected to
No connection
No connection
AIN2
No connection
No connection
AIN5
AIN6
No connection
No connection
No connection
AIN8
No connection
No connection
AIN11
AIN12
No connection
ADV7183B
GLOBAL CONTROL REGISTERS
Register control bits listed in this section affect the whole chip.
PWRDN_ADC_0, Address 0x3A[3]
POWER-SAVE MODES
When PWRDN_ADC_0 is 0 (default), the ADC is in normal
operation.
Power-Down
PDBP, Address 0x0F[2]
When PWRDN_ADC_0 is 1, ADC 0 is powered down.
The digital core of the ADV7183B can be shut down by using
the PWRDN pin and the PWRDN bit (see below). The PDBP
controls which of the two pins has the higher priority. The
default is to give priority to the PWRDN pin. This allows the
user to have the ADV7183B powered down by default.
PWRDN_ADC_1, Address 0x3A[2]
When PDBD is 0 (default), the digital core power is controlled
by the PWRDN pin (the bit is disregarded).
PWRDN_ADC_2, Address 0x3A[1]
When PDBD is 1, the bit has priority (the pin is disregarded).
When PWRDN_ADC_1 is 0 (default), the ADC is in normal
operation.
When PWRDN_ADC_1 is 1, ADC 1 is powered down.
When PWRDN_ADC_2 is 0 (default), the ADC is in normal
operation.
When PWRDN_ADC_2 is 1, ADC 2 is powered down.
PWRDN, Address 0x0F[5]
Setting the PWRDN bit switches the ADV7183B into a chipwide power-down mode. The power-down stops the clock from
entering the digital section of the chip, thereby freezing its
operation. No I2C bits are lost during power-down. The
PWRDN bit also affects the analog blocks and switches them
into low current modes. The I2C interface is unaffected and
remains operational in power-down mode.
The ADV7183B leaves the power-down state if the PWRDN
bit is set to 0 (via I2C), or if the overall part is reset using the
RESET pin.
PDBP must be set to 1 for the PWRDN bit to power down the
ADV7183B.
When PWRDN is 0 (default), the chip is operational.
When PWRDN is 1, the ADV7183B is in chip-wide power-down.
ADC Power-Down Control
RESET CONTROL
Chip Reset (RES), Address 0x0F[7]
Setting this bit, equivalent to controlling the RESET pin on the
ADV7183B, issues a full chip reset. All I2C registers are reset to
their default values. (Some register bits do not have a reset value
specified. They keep their last written value. Those bits are
marked as having a reset value of x in the register table.) After
the reset sequence, the part immediately starts to acquire the
incoming video signal.
After setting the RES bit (or initiating a reset via the pin), the
part returns to the default mode of operation with respect to its
primary mode of operation. All I2C bits are loaded with their
default values, making this bit self-clearing.
Executing a software reset takes approximately 2 ms. However,
it is recommended to wait 5 ms before any further I2C writes are
performed.
The ADV7183B contains three 10-bit ADCs (ADC 0, ADC 1,
and ADC 2). If required, each ADC can be powered down
individually.
The I2C master controller receives a no acknowledge condition
on the ninth clock cycle when chip reset is implemented. See
the MPU Port Description section.
The ADCs should be powered down when in:
When RES is 0 (default), operation is normal.
•
CVBS mode. ADC 1 and ADC 2 should be powered down
to save on power consumption.
When RES is 1, the reset sequence starts.
•
S-Video mode. ADC 2 should be powered down to save on
power consumption.
148H
Rev. B | Page 16 of 100
ADV7183B
Timing Signals Output Enable
TIM_OE, Address 0x04[3]
GLOBAL PIN CONTROL
Three-State Output Drivers
TOD, Address 0x03[6]
This bit allows the user to three-state the output drivers of the
ADV7183B.
Upon setting the TOD bit, the P15 to P0, HS, VS, FIELD, and
SFL pins are three-stated.
The timing pins (HS/VS/FIELD) can be forced active via the
TIM_OE bit. For more information on three-state control, refer
to the Three-State LLC Driver and the Timing Signals Output
Enable sections.
149H
The TIM_OE bit should be regarded as an addition to the TOD
bit. Setting it high forces the output drivers for HS, VS, and
FIELD pins into the active (driving) state even if the TOD bit is
set. If set to low, the HS, VS, and FIELD pins are three-stated,
dependent on the TOD bit. This functionality is useful if the
decoder is used as a timing generator only. This can happen
when only the timing signals are to be extracted from an
incoming signal, or if the part is in free-run mode where a
separate chip can output, for an example, a company logo.
150H
For more information on three-state control, refer to the ThreeState Output Drivers and the Three-State LLC Driver sections.
153H
154H
Individual drive strength controls are provided via the
DR_STR_XX bits.
Individual drive strength controls are provided via the
DR_STR_XX bits.
The ADV7183B supports three-stating via a dedicated pin.
When set high, the OE pin three-states the output drivers for
the P15 to P0, HS, VS, FIELD, and SFL pins. The output drivers
are three-stated if the TOD bit or the OE pin is set high.
When TOD is 0 (default), the output drivers are enabled.
Three-State LLC Driver
TRI_LLC, Address 0x1D[7]
This bit allows the output drivers for the LLC1 and LLC2 pins
of the ADV7183B to be three-stated. For more information on
three-state control, refer to the Three-State Output Drivers and
the Timing Signals Output Enable sections.
152H
Individual drive strength controls are provided via the
DR_STR_XX bits.
When TRI_LLC is 0 (default), the LLC pin drivers work
according to the DR_STR_C[1:0] setting (pin enabled).
When TRI_LLC is 1, the LLC pin drivers are three-stated.
When TIM_OE is 1, HS, VS, and FIELD are forced active all
the time.
Drive Strength Selection (Data)
DR_STR[1:0] Address 0xF4[5:4]
When TOD is 1, the output drivers are three-stated.
15H
When TIM_OE is 0 (default), the HS, VS, and FIELD pins are
three-stated according to the TOD bit.
For EMC and crosstalk reasons, it can be desirable to strengthen
or weaken the drive strength of the output drivers. The
DR_STR[1:0] bits affect the P[15:0] output drivers.
For more information on three-state control, refer to the Drive
Strength Selection (Clock) and the Drive Strength Selection
(Sync) sections.
15H
156H
Table 11. DR_STR Function
DR_STR[1:0]
00
01 (default)
10
11
Rev. B | Page 17 of 100
Description
Low drive strength (1×)
Medium low drive strength (2×)
Medium high drive strength (3×)
High drive strength (4×)
ADV7183B
Drive Strength Selection (Clock)
DR_STR_C[1:0] Address 0xF4[3:2]
Enable Subcarrier Frequency Lock Pin
EN_SFL_PIN Address 0x04[1]
The DR_STR_C[1:0] bits can be used to select the strength of
the clock signal output driver (LLC pin). For more information,
refer to the Drive Strength Selection (Sync) and the Drive
Strength Selection (Data) sections.
The EN_SFL_PIN bit enables the output of subcarrier lock
information (also known as GenLock) from the ADV7183B to
an encoder in a decoder-encoder back-to-back arrangement.
157H
158H
Table 12. DR_STR_C Function
DR_STR_C[1:0]
00
01 (default)
10
11
Description
Low drive strength (1×)
Medium low drive strength (2×)
Medium high drive strength (3×)
High drive strength (4×)
When EN_SFL_PIN is 0 (default), the subcarrier frequency lock
output is disabled.
When EN_SFL_PIN is 1, the subcarrier frequency lock information is presented on the SFL pin.
Polarity LLC Pin
PCLK Address 0x37[0]
Drive Strength Selection (Sync)
DR_STR_S[1:0] Address 0xF4[1:0]
The polarity of the clock that leaves the ADV7183B via the
LLC1 and LLC2 pins can be inverted using the PCLK bit.
The DR_STR_S[1:0] bits allow the user to select the strength of
the synchronization signals with which HS, VS, and F are
driven. For more information, refer to the Drive Strength
Selection (Clock) and the Drive Strength Selection (Data)
sections.
Changing the polarity of the LLC clock output can be necessary
to meet the setup-and-hold time expectations of follow-on
chips.
Table 13. DR_STR_S Function
When PCLK is 0, the LLC output polarity is inverted.
159H
160H
DR_STR_S[1:0]
00
01 (default)
10
11
Description
Low drive strength (1×)
Medium low drive strength (2×)
Medium high drive strength (3×)
High drive strength (4×)
This bit also inverts the polarity of the LLC2 clock.
When PCLK is 1 (default), the LLC output polarity is normal
(as per the timing diagrams).
Rev. B | Page 18 of 100
ADV7183B
GLOBAL STATUS REGISTERS
Four registers provide summary information about the video
decoder. The IDENT register allows the user to identify the
revision code of the ADV7183B. The three other registers
contain status bits regarding IC operation.
Table 15. STATUS 1 Function
STATUS 1[7:0]
0
1
Bit Name
IN_LOCK
LOST_LOCK
2
3
FSC_LOCK
FOLLOW_PW
4
5
6
7
AD_RESULT.0
AD_RESULT.1
AD_RESULT.2
COL_KILL
IDENTIFICATION
IDENT[7:0] Address 0x11[7:0]
This register provides identification of the revision of the
ADV7183B.
An identification value of 0x11 indicates the ADV7183, released
silicon.
Description
In lock (right now)
Lost lock (since last read of
this register)
FSC locked (right now)
AGC follows peak white
algorithm
Result of autodetection
Result of autodetection
Result of autodetection
Color kill active
An identification value of 0x13 indicates the ADV7183B silicon.
STATUS 2
STATUS 1
STATUS_2[7:0], Address 0x12[7:0]
STATUS_1[7:0] Address 0x10[7:0]
Table 16. STATUS 2 Function
This read-only register provides information about the internal
status of the ADV7183B.
See VS_Coast[1:0] Address 0xF9[3:2], CIL[2:0] Count Into
Lock, Address 0x51[2:0], and COL[2:0] Count Out-of-Lock,
Address 0x51[5:3] for information on the timing.
16H
STATUS 2[7:0]
0
Bit Name
MVCS DET
1
MVCS T3
2
MV_PS DET
3
MV_AGC DET
4
5
6
7
LL_NSTD
FSC_NSTD
Reserved
Reserved
162H
163H
Depending on the setting of the FSCLE bit, the Status[0] and
Status[1] bits are based solely on horizontal timing information
on the horizontal timing and lock status of the color subcarrier.
See the FSCLE FSC Lock Enable, Address 0x51[7] section.
164H
AUTODETECTION RESULT
AD_RESULT[2:0] Address 0x10[6:4]
The AD_RESULT[2:0] bits report back on the findings from the
autodetection block. For more information on enabling the
autodetection block, see the General Setup section. For
information on configuring it, see the Autodetection of SD
Modes section.
Description
Detected Macrovision color
striping
Macrovision color striping
protection. Conforms to
Type 3 if high and to Type 2
if low
Detected Macrovision
pseudo sync pulses
Detected Macrovision AGC
pulses
Line length is nonstandard
FSC frequency is nonstandard
STATUS 3
STATUS_3[7:0], Address 0x13[7:0]
165H
Table 17. STATUS 3 Function
16H
Table 14. AD_RESULT Function
AD_RESULT[2:0]
000
001
010
011
100
101
110
111
Description
NTSM-MJ
NTSC-443
PAL-M
PAL-60
PAL-BGHID
SECAM
PAL-Combination N
SECAM 525
STATUS 3[7:0]
0
Bit Name
INST_HLOCK
1
2
GEMD
SD_OP_50HZ
3
4
FREE_RUN_ACT
Description
Horizontal lock indicator
(instantaneous).
Gemstar detect.
Flags whether 50 Hz or
60 Hz are present at output.
Reserved for future use.
Outputs a blue screen (see the
DEF_VAL_AUTO_EN Default
Value Automatic Enable,
Address 0x0C[1] section).
Field length is correct for
currently selected video
standard.
Interlaced video detected
(field sequence found).
Reliable sequence of swinging
bursts detected.
167H
5
STD_FLD_LEN
6
INTERLACED
7
PAL_SW_LOCK
Rev. B | Page 19 of 100
ADV7183B
STANDARD DEFINITION PROCESSOR (SDP)
STANDARD DEFINITION PROCESSOR
MACROVISION
DETECTION
DIGITIZED CVBS
DIGITIZED Y (YC)
DIGITIZED CVBS
DIGITIZED C (YC)
VBI DATA
RECOVERY
LUMA
DIGITAL
FINE
CLAMP
CHROMA
DIGITAL
FINE
CLAMP
CHROMA
DEMOD
STANDARD
AUTODETECTION
SLLC
CONTROL
LUMA
FILTER
GAIN
CONTROL
LUMA
RESAMPLE
SYNC
EXTRACT
LINE
LENGTH
PREDICTOR
RESAMPLE
CONTROL
CHROMA
FILTER
GAIN
CONTROL
CHROMA
RESAMPLE
LUMA
2D COMB
AV
CODE
INSERTION
CHROMA
2D COMB
VIDEO DATA
OUTPUT
MEASUREMENT
BLOCK (≥ I2C)
VIDEO DATA
PROCESSING
BLOCK
04997-008
FSC
RECOVERY
Figure 8. Block Diagram of the Standard Definition Processor
A block diagram of the ADV7183B’s standard definition
processor (SDP) is shown in Figure 8.
SD CHROMA PATH
The SDP block can handle standard definition video in CVBS,
Y/C, and YPrPb formats. It can be divided into a luminance and
a chrominance path. If the input video is of a composite type
(CVBS), both processing paths are fed with the CVBS input.
•
Digital Fine Clamp. This block uses a high precision
algorithm to clamp the video signal.
•
Digital Fine Clamp. This block uses a high precision
algorithm to clamp the video signal.
Chroma Demodulation. This block uses a color subcarrier
(FSC) recovery unit to regenerate the color subcarrier for
any modulated chroma scheme. The demodulation block
then performs an AM demodulation for PAL and NTSC,
and an FM demodulation for SECAM.
•
Luma Filter Block. This block contains a luma decimation
filter (YAA) with a fixed response and some shaping filters
(YSH) that have selectable responses.
Chroma Filter Block. This block contains a chroma
decimation filter (CAA) with a fixed response and some
shaping filters (CSH) that have selectable responses.
•
Gain Control. Automatic gain control (AGC) can operate
on several different modes, including gain based on the
color subcarrier’s amplitude, gain based on the depth of
the horizontal sync pulse on the luma channel, or fixed
manual gain.
•
Chroma Resample. The chroma data is digitally resampled
to keep it perfectly aligned with the luma data. The
resampling is done to correct for static and dynamic linelength errors of the incoming video signal.
The input signal is processed by the following blocks:
168H
SD LUMA PATH
The input signal is processed by the following blocks:
•
•
•
Luma Gain Control. The automatic gain control (AGC)
can operate on a variety of different modes, including gain
based on the depth of the horizontal sync pulse, peak white
mode, and fixed manual gain.
•
Luma Resample. To correct for line-length errors as well as
dynamic line-length changes, the data is digitally resampled.
•
Luma 2D Comb. The two-dimensional comb filter
provides Y/C separation.
•
AV Code Insertion. At this point, the decoded luma (Y)
signal is merged with the retrieved chroma values. AV
codes (as per ITU-R. BT-656) can be inserted.
Chroma 2D Comb. The two-dimensional, 5-line,
superadaptive comb filter provides high quality Y/C
separation when the input signal is CVBS.
•
AV Code Insertion. At this point, the demodulated chroma
(Cr and Cb) signal is merged with the retrieved luma
values. AV codes (as per ITU-R. BT-656) can be inserted.
•
Rev. B | Page 20 of 100
ADV7183B
SYNC PROCESSING
GENERAL SETUP
The ADV7183B extracts syncs embedded in the video data
stream. There is currently no support for external HS/VS
inputs. The sync extraction has been optimized to support
imperfect video sources such as VCRs with head switches. The
actual algorithm used employs a coarse detection based on a
threshold crossing followed by a more detailed detection using
an adaptive interpolation algorithm. The raw sync information
is sent to a line-length measurement and prediction block. The
output of this is then used to drive the digital resampling
section to ensure the ADV7183B outputs 720 active pixels per
line.
Video Standard Selection
The VID_SEL[3:0] bits allows the user to force the digital core
into a specific video standard. Under normal circumstances,
this should not be necessary. The VID_SEL[3:0] bits default to
an autodetection mode that supports PAL, NTSC, SECAM, and
variants thereof. The following section describes the autodetection system.
Autodetection of SD Modes
The sync processing on the ADV7183B also includes the
following specialized postprocessing blocks that filter and
condition the raw sync information retrieved from the digitized
analog video.
To guide the autodetection system, individual enable bits are
provided for each of the supported video standards. Setting the
relevant bit to 0 inhibits the standard from being detected
automatically. Instead, the system picks the closest of the
remaining enabled standards. The results of the autodetection
can be read back via the status registers. See the Global Status
Registers section for more information.
•
Vsync Processor. This block provides extra filtering of the
detected Vsyncs to give improved vertical lock.
VID_SEL[3:0] Address 0x00[7:4]
Hsync Processor. The Hsync processor is designed to filter
incoming Hsyncs that are corrupted by noise, providing
much improved performance for video signals with stable
time base but poor SNR.
VID_SEL
0000 (default)
•
169H
Table 18. VID_SEL Function
0001
VBI DATA RECOVERY
0010
The ADV7183B can retrieve the following information from the
input video:
0011
•
Wide-screen signaling (WSS)
•
Copy generation management system (CGMS)
•
Closed caption (CC)
•
Macrovision protection presence
•
EDTV data
•
Gemstar-compatible data slicing
The ADV7183B is also capable of automatically detecting the
incoming video standard with respect to
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Description
Autodetect (PAL BGHID) <–> NTSC J
(no pedestal), SECAM
Autodetect (PAL BGHID) <–> NTSC M
(pedestal), SECAM
Autodetect (PAL N) (pedestal) <–> NTSC J
(no pedestal), SECAM
Autodetect (PAL N) (pedestal) <–> NTSC M
(pedestal), SECAM
NTSC-J (1)
NTSC-M (1)
PAL60
NTSC-.43 (1)
PAL-B/G/H/I/D
PAL-N (= PAL BGHID (with pedestal))
PAL-M (without pedestal)
PAL-M
PAL-Combination N
PAL COMBINATION N (with pedestal)
SECAM
SECAM (with pedestal)
•
Color subcarrier frequency
AD_SEC525_EN Enable Autodetection of SECAM 525
Line Video, Address 0x07[7]
•
Field rate
•
Line rate
Setting AD_SEC525_EN to 0 (default) disables the autodetection
of a 525-line system with a SECAM style, FM-modulated color
component.
The SPD can configure itself to support PAL-B/G/H/I/D,
PAL-M/N, PAL-combination N, NTSC-M, NTSC-J, SECAM
50 Hz/60 Hz, NTSC4.43, and PAL60.
Setting AD_SEC525_EN to 1 enables the detection.
Rev. B | Page 21 of 100
ADV7183B
AD_SECAM_EN Enable Autodetection of SECAM,
Address 0x07[6]
SFL_INV Subcarrier Frequency Lock Inversion
Setting AD_SECAM_EN to 0 disables the autodetection of
SECAM.
Setting AD_SECAM_EN to 1 (default) enables the detection.
This bit controls the behavior of the PAL switch bit in the SFL
(GenLock Telegram) data stream. It was implemented to solve
some compatibility issues with video encoders. It solves two
problems.
First, the PAL switch bit is only meaningful in PAL. Some
encoders (including ADI encoders) also look at the state of this
bit in NTSC.
AD_N443_EN Enable Autodetection of NTSC 443,
Address 0x07[5]
Setting AD_N443_EN to 0 disables the autodetection of NTSC
style systems with a 4.43 MHz color subcarrier.
Setting AD_N443_EN to 1 (default) enables the detection.
AD_P60_EN Enable Autodetection of PAL60,
Address 0x07[4]
Setting AD_P60_EN to 0 disables the autodetection of PAL
systems with a 60 Hz field rate.
Second, there was a design change in ADI encoders from
ADV717x to ADV719x. The older versions used the SFL
(Genlock Telegram) bit directly, while the later ones invert the
bit prior to using it. The reason for this is that the inversion
compensated for the 1-line delay of an SFL (GenLock Telegram)
transmission.
As a result, ADV717x encoders need the PAL switch bit in the
SFL (Genlock Telegram) to be 1 for NTSC to work, and
ADV7190/ADV7191/ADV7194 encoders need the PAL switch
bit in the SFL to be 0 to work in NTSC. If the state of the PAL
switch bit is wrong, a 180° phase shift occurs.
Setting AD_P60_EN to 1 (default) enables the detection.
AD_PALN_EN Enable Autodetection of PAL N,
Address 0x07[3]
Setting AD_PALN_EN to 0 disables the detection of the PAL N
standard.
In a decoder/encoder back-to-back system in which SFL is used,
this bit must be set up properly for the specific encoder used.
SFL_INV Address 0x41[6]
Setting AD_PALN_EN to 1 (default) enables the detection.
Setting SFL_INV to 0 makes the part SFL-compatible with
ADV7190/ADV7191/ADV7194 encoders.
AD_PALM_EN Enable Autodetection of PAL M,
Address 0x07[2]
Setting AD_PALM_EN to 0 disables the autodetection of PAL M.
Setting AD_PALM_EN to 1 (default) enables the detection.
Setting SFL_INV to 1 (default), makes the part SFL-compatible
with ADV717x/ADV7173x encoders.
Lock-Related Controls
AD_NTSC_EN Enable Autodetection of NTSC,
Address 0x07[1]
Lock information is presented to the user through Bits[1:0] of
the Status 1 register. See the STATUS_1[7:0] Address 0x10[7:0]
section. Figure 9 outlines the signal flow and the controls
available to influence the way the lock status information is
generated.
170H
Setting AD_NTSC_EN to 0 disables the detection of standard
NTSC.
Setting AD_NTSC_EN to 1 (default) enables the detection.
17H
AD_PAL_EN Enable Autodetection of PAL,
Address 0x07[0]
Setting AD_PAL_EN to 0 disables the detection of standard PAL.
Setting AD_PAL_EN to 1 (default) enables the detection.
SELECT THE RAW LOCK SIGNAL
SRLS
1
0
FSC LOCK
0
1
COUNTER INTO LOCK
COUNTER OUT OF LOCK
STATUS 1 [0]
MEMORY
STATUS 1 [1]
04997-009
TIME_WIN
FREE_RUN
FILTER THE RAW LOCK SIGNAL
CIL[2:0], COL[2:0]
TAKE FSC LOCK INTO ACCOUNT
FSCLE
Figure 9. Lock-Related Signal Path
Rev. B | Page 22 of 100
ADV7183B
SRLS Select Raw Lock Signal, Address 0x51[6]
COL[2:0] Count Out-of-Lock, Address 0x51[5:3]
Using the SRLS bit, the user can choose between two sources for
determining the lock status (per Bits[1:0] in the Status 1 register).
COL[2:0] determines the number of consecutive lines for which
the out-of-lock condition must be true before the system switches
into unlocked state, and reports this via Status 0[1:0]. It counts
the value in lines of video.
•
•
The time_win signal is based on a line-to-line evaluation of
the horizontal synchronization pulse of the incoming video.
It reacts quite quickly.
The free_run signal evaluates the properties of the
incoming video over several fields and takes vertical
synchronization information into account.
Setting SRLS to 0 (default) selects the free_run signal.
Setting SRLS to 1 selects the time_win signal.
FSCLE FSC Lock Enable, Address 0x51[7]
The FSCLE bit allows the user to choose whether the status of
the color subcarrier loop is taken into account when the overall
lock status is determined and presented via Bits[1:0] in Status
Register 1. This bit must be set to 0 when operating in YPrPb
component mode to generate a reliable HLOCK status bit.
Setting FSCLE to 0 (default) makes the overall lock status
dependent on only horizontal sync lock.
Setting FSCLE to 1 makes the overall lock status dependent on
horizontal sync lock and FSC lock.
Description
Auto coast mode—follows VS
frequency from last video input
Forces 50 Hz coast mode
Forces 60 Hz coast mode
Reserved
CIL[2:0] determines the number of consecutive lines for which
the lock condition must be true before the system switches into
the locked state, and reports this via Status 0[1:0]. It counts the
value in lines of video.
Description
1
2
5
10
100
500
1000
100000
These registers allow the user to control the picture appearance,
including control of the active data in the event of video being
lost. These controls are independent of any other controls. For
instance, brightness control is independent from picture clamping, although both controls affect the signal’s dc level.
CON[7:0] Contrast Adjust, Address 0x08[7:0]
Description
Gain on luma channel = 1
Gain on luma channel = 0
Gain on luma channel = 2
SD_SAT_Cb[7:0] SD Saturation Cb Channel,
Address 0xE3[7:0]
CIL[2:0] Count Into Lock, Address 0x51[2:0]
CIL[2:0]
000
001
010
011
100 (default)
101
110
111
COLOR CONTROLS
CON[7:0]
0x80 (default)
0x00
0xFF
Table 19. VS_COAST[1:0] Function
Table 20. CIL Function
Description
1
2
5
10
100
500
1000
100000
Table 22. CON Function
These bits are used to set VS free-run (coast) frequency.
01
10
11
COL[2:0]
000
001
010
011
100 (default)
101
110
111
This allows the user to adjust the contrast of the picture.
VS_Coast[1:0] Address 0xF9[3:2]
VS_COAST[1:0]
00 (default)
Table 21. COL Function
This register allows the user to control the gain of the Cb
channel only. The user can adjust the saturation of the picture.
Table 23. SD_SAT_Cb Function
SD_SAT_Cb[7:0]
0x80 (default)
0x00
0xFF
Rev. B | Page 23 of 100
Description
Gain on Cb channel = 0 dB
Gain on Cb channel = −42 dB
Gain on Cb channel = +6 dB
ADV7183B
SD_SAT_Cr[7:0] SD Saturation Cr Channel, Address
0xE4[7:0]
HUE[7:0] Hue Adjust, Address 0x0B[7:0]
This register allows the user to control the gain of the Cr channel
only. The user can adjust the saturation of the picture.
Table 24. SD_SAT_Cr Function
SD_SAT_Cr[7:0]
0x80 (default)
0x00
0xFF
Description
Gain on Cr channel = 0 dB
Gain on Cb channel = −42 dB
Gain on Cb channel = +6 dB
This register contains the value for the color hue adjustment. It
allows the user to adjust the hue of the picture.
HUE[7:0] has a range of ±90°, with 0x00 equivalent to an
adjustment of 0°. The resolution of HUE[7:0] is 1 bit = 0.7°.
The hue adjustment value is fed into the AM color demodulation
block. Therefore, it applies only to video signals that contain
chroma information in the form of an AM modulated carrier
(CVBS or Y/C in PAL or NTSC). It does not affect SECAM and
does not work on component video inputs (YPrPb).
SD_OFF_Cb[7:0] SD Offset Cb Channel,
Address 0xE1[7:0]
Table 28. HUE Function
This register allows the user to select an offset for data on the
Cb channel only and adjust the hue of the picture. There is a
functional overlap with the Hue[7:0] register.
HUE[7:0]
0x00 (default)
0x7F
0x80
Description
Phase of the chroma signal = 0°
Phase of the chroma signal = –90°
Phase of the chroma signal = +90°
Table 25.SD_OFF_Cb Function
SD_OFF_Cb[7:0]
0x80 (default)
0x00
0xFF
Description
0 offset applied to the Cb channel
−312 mV offset applied to the Cb channel
+312 mV offset applied to the Cb channel
SD_OFF_Cr[7:0] SD Offset Cr Channel, Address
0xE2[7:0]
This register allows the user to select an offset for data on the Cr
channel only and adjust the hue of the picture. There is a functional overlap with the Hue[7:0] register.
DEF_Y[5:0] Default Value Y, Address 0x0C[7:2]
If the ADV7183B loses lock on the incoming video signal or if
there is no input signal, the DEF_Y[5:0] bits allow the user to
specify a default luma value to be output. This value is used if
•
The DEF_VAL_AUTO_EN bit is set to high and the
ADV7183B lost lock to the input video signal. This is the
intended mode of operation (automatic mode).
•
The DEF_VAL_EN bit is set, regardless of the lock status of
the video decoder. This is a forced mode that may be useful
during configuration.
Table 26. SD_OFF_Cr Function
SD_OFF_Cr[7:0]
0x80 (default)
0x00
0xFF
Description
0 offset applied to the Cr channel
−312 mV offset applied to the Cr channel
+312 mV offset applied to the Cr channel
The DEF_Y[5:0] values define the 6 MSBs of the output video.
The remaining LSBs are padded with 0s. For example, in 8-bit
mode, the output is Y[7:0] = {DEF_Y[5:0], 0, 0}.
DEF_Y[5:0] is 0x0D (blue) is the default value for Y.
BRI[7:0] Brightness Adjust, Address 0x0A[7:0]
This register controls the brightness of the video signal. It
allows the user to adjust the brightness of the picture.
Table 27. BRI Function
BRI[7:0]
0x00 (default)
0x7F
0xFF
Description
Offset of the luma channel = 0IRE
Offset of the luma channel = +100IRE
Offset of the luma channel = –100IRE
Register 0x0C has a default value of 0x36.
DEF_C[7:0] Default Value C, Address 0x0D[7:0]
The DEF_C[7:0] register complements the DEF_Y[5:0] value. It
defines the 4 MSBs of Cr and Cb values to be output if
•
The DEF_VAL_AUTO_EN bit is set to high and the
ADV7183B cannot lock to the input video (automatic
mode).
•
The DEF_VAL_EN bit is set to high (forced output).
The data that is finally output from the ADV7183B for the
chroma side is Cr[7:0] = {DEF_C[7:4], 0, 0, 0, 0}, Cb[7:0] =
{DEF_C[3:0], 0, 0, 0, 0}.
DEF_C[7:0] is 0x7C (blue) is the default value for Cr and Cb.
Rev. B | Page 24 of 100
ADV7183B
DEF_VAL_EN Default Value Enable, Address 0x0C[0]
The clamping can be divided into two sections:
This bit forces the use of the default values for Y, Cr, and Cb.
Refer to the descriptions for DEF_Y and DEF_C for additional
information. In this mode, the decoder also outputs a stable
27 MHz clock, HS, and VS.
•
•
Setting DEF_VAL_EN to 0 (default) outputs a colored screen
determined by user-programmable Y, Cr, and Cb values when
the decoder free-runs. Free-run mode is turned on and off by the
DEF_VAL_AUTO_EN bit.
Setting DEF_VAL_EN to 1 forces a colored screen output
determined by user-programmable Y, Cr, and Cb values. This
overrides picture data even if the decoder is locked.
DEF_VAL_AUTO_EN Default Value Automatic Enable,
Address 0x0C[1]
This bit enables the automatic usage of the default values for
Y, Cr, and Cb when the ADV7183B cannot lock to the
video signal.
Setting DEF_VAL_AUTO_EN to 0 disables free-run mode. If
the decoder is unlocked, it outputs noise.
Setting DEF_VAL_EN to 1 (default) enables free-run mode. A
colored screen set by the user-programmable Y, Cr, and Cb
values is displayed when the decoder loses lock.
CLAMP OPERATION
The input video is ac-coupled into the ADV7183B through a
0.1 μF capacitor. The recommended range of the input video
signal is 0.5 V to 1.6 V (typically 1 V p-p). If the signal exceeds
this range, it cannot be processed correctly in the decoder. Since
the input signal is ac-coupled into the decoder, its dc value
needs to be restored. This process is referred to as clamping the
video. This section explains the general process of clamping on
the ADV7183B and shows the different ways in which a user
can configure its behavior.
The ADV7183B uses a combination of current sources and a
digital processing block for clamping, as shown in Figure 10.
The analog processing channel shown is replicated three times
inside the IC. While only one single channel (and only one
ADC) is needed for a CVBS signal, two independent channels
are needed for Y/C (S-VHS) type signals, and three
independent channels are needed to allow component signals
(YPrPb) to be processed.
172H
ANALOG
VIDEO
INPUT
The ADCs can digitize an input signal only if it resides within
the ADC’s 1.6 V input voltage range. An input signal with a dc
level that is too large or too small is clipped at the top or bottom
of the ADC range.
The primary task of the analog clamping circuits is to ensure
the video signal stays within the valid ADC input window so
that the analog-to-digital conversion can take place. It is not
necessary to clamp the input signal with a very high accuracy in
the analog domain as long as the video signal fits the ADC range.
After digitization, the digital fine clamp block corrects for any
remaining variations in dc level. Since the dc level of an input
video signal refers directly to the brightness of the picture
transmitted, it is important to perform a fine clamp with high
accuracy; otherwise, brightness variations can occur. Furthermore, dynamic changes in the dc level almost certainly lead to
visually objectionable artifacts and must therefore be prohibited.
The clamping scheme has to be able to acquire a newly connected
video signal with a completely unknown dc level, and it must
maintain the dc level during normal operation.
For quickly acquiring an unknown video signal, the large current clamps can be activated. (It is assumed that the amplitude
of the video signal at this point is of a nominal value.) Control
of the coarse and fine current clamp parameters is performed
automatically by the decoder.
Standard definition video signals can have excessive noise on
them. In particular, CVBS signals transmitted by terrestrial
broadcast and demodulated using a tuner usually show very
large levels of noise (>100 mV). A voltage clamp is unsuitable
for this type of video signal. Instead, the ADV7183B uses a set
of four current sources that can cause coarse (>0.5 mA) and fine
(<0.1 mA) currents to flow into and away from the high
impedance node that carries the video signal (see Figure 10).
173H
COARSE
CURRENT
SOURCES
ADC
DATA
PREPROCESSOR
(DPP)
CLAMP CONTROL
Figure 10. Clamping Overview
Rev. B | Page 25 of 100
SDP
WITH DIGITAL
FINE CLAMP
04997-010
FINE
CURRENT
SOURCES
Clamping before the ADC (analog domain): current sources
Clamping after the ADC (digital domain): digital
processing block
ADV7183B
LUMA FILTER
The following sections describe the I2C signals that can be used
to influence the behavior of the clamps on the ADV7183B.
Data from the digital fine clamp block is processed by three sets
of filters. The data format at this point is CVBS for CVBS input
or luma only for Y/C and YPrPb input formats.
Previous revisions of the ADV7183B had controls (FACL/FICL,
fast and fine clamp length) to allow configuration of the length
for which the coarse (fast) and fine current sources are switched
on. These controls were removed on the ADV7183B-FT and
replaced by an adaptive scheme.
•
Luma Antialias Filter (YAA). The ADV7183B receives
video at a rate of 27 MHz. (For 4× oversampled video, the
ADCs sample at 54 MHz, and the first decimation is
performed inside the DPP filters. Therefore, the data rate
into the SDP core is always 27 MHz.) The ITU-R BT.601
recommends a sampling frequency of 13.5 MHz. The luma
antialias filter decimates the oversampled video using a
high quality, linear phase, low-pass filter that preserves the
luma signal while at the same time attenuating out-of-band
components. The luma antialias filter has a fixed response.
•
Luma Shaping Filters (YSH). The shaping filter block is a
programmable low-pass filter with a wide variety of
responses. It can be used to selectively reduce the luma
video signal bandwidth (needed prior to scaling, for
example). For some video sources that contain high
frequency noise, reducing the bandwidth of the luma
signal improves visual picture quality. A follow-on video
compression stage can work more efficiently if the video is
low-pass filtered.
CCLEN Current Clamp Enable, Address 0x14[4]
The current clamp enable bit allows the user to switch off the
current sources in the analog front end altogether. This can be
useful if the incoming analog video signal is clamped externally.
When CCLEN is 0, the current sources are switched off.
When CCLEN is 1 (default), the current sources are enabled.
DCT[1:0] Digital Clamp Timing, Address 0x15[6:5]
The clamp timing register determines the time constant of the
digital fine clamp circuitry. It is important to realize that the
digital fine clamp reacts very quickly because it is supposed to
immediately correct any residual dc level error for the active
line. The time constant of the digital fine clamp must be much
faster than the one from the analog blocks.
By default, the time constant of the digital fine clamp is adjusted
dynamically to suit the currently connected input signal.
The ADV7183B has two responses for the shaping filter:
one that is used for good quality CVBS, component, and
S-VHS type sources, and a second for nonstandard CVBS
signals.
Table 29. DCT Function
DCT[1:0]
00
01
10 (default)
11
Description
Slow (TC = 1 sec)
Medium (TC = 0.5 sec)
Fast (TC = 0.1 sec)
Determined by the ADV7183B, depending on
the I/P video parameters
The YSH filter responses also include a set of notches for
PAL and NTSC. However, using the comb filters for Y/C
separation is recommended.
•
DCFE Digital Clamp Freeze Enable, Address 0x15[4]
This register bit allows the user to freeze the digital clamp loop
at any time. It is intended for users who would like to do their
own clamping. Users should disable the current sources for
analog clamping via the appropriate register bits, wait until the
digital clamp loop settles, and then freeze it via the DCFE bit.
When DCFE is 0 (default), the digital clamp is operational.
Digital Resampling Filter. This block is used to allow
dynamic resampling of the video signal to alter parameters
such as the time base of a line of video. Fundamentally, the
resampler is a set of low-pass filters. The actual response is
selected by the system, and user intervention is not
required.
Figure 12 through Figure 15 show the overall response of all
filters together. Unless otherwise noted, the filters are set into a
typical wideband mode.
174H
When DCFE is 1, the digital clamp loop is frozen.
Rev. B | Page 26 of 100
175H
ADV7183B
Y-Shaping Filter
For input signals in CVBS format, the luma shaping filters play
an essential role in removing the chroma component from a
composite signal. Y/C separation must aim for best possible
crosstalk reduction while still retaining as much bandwidth
(especially on the luma component) as possible. High quality
Y/C separation can be achieved by using the internal comb
filters of the ADV7183B. Comb filtering, however, relies on the
frequency relationship of the luma component (multiples of the
video line rate) and the color subcarrier (FSC). For good quality
CVBS signals, this relationship is known; the comb filter
algorithms can be used to separate out luma and chroma with
high accuracy.
For nonstandard video signals, the frequency relationship may
be disturbed, and the comb filters may not be able to optimally
remove all crosstalk artifacts without the assistance of the
shaping filter block.
An automatic mode is provided. The ADV7183B evaluates the
quality of the incoming video signal and selects the filter
responses in accordance with the signal quality and video
standard. YFSM, WYSFMOVR, and WYSFM allow the user to
manually override the automatic decisions in part or in full.
The luma shaping filter has three control registers:
•
•
•
YSFM[4:0] allows the user to manually select a shaping
filter mode (applied to all video signals) or to enable an
automatic selection (dependent on video quality and video
standard).
WYSFMOVR allows the user to manually override the
WYSFM decision.
In automatic mode, the system preserves the maximum possible
bandwidth for good CVBS sources, since they can successfully
be combed, as well as for luma components of YPrPb and Y/C
sources, since they need not be combed. For poor quality
signals, the system selects from a set of proprietary shaping
filter responses that complements comb filter operation to
reduce visual artifacts.
The decisions of the control logic are shown in Figure 11.
176H
YSFM[4:0] Y-Shaping Filter Mode, Address 0x17[4:0]
The Y shaping filter mode bits allow the user to select from a
wide range of low-pass and notch filters. When switched in
automatic mode, the filter is selected based on other register
selections (for example, detected video standard) as well as
properties extracted from the incoming video itself (for
example, quality, time-base stability). The automatic selection
always selects the widest possible bandwidth for the video input
encountered.
If the YSFM settings specify a filter (where YSFM is set to values
other than 00000 or 00001), the chosen filter is applied to all
video, regardless of its quality.
In automatic selection mode, the notch filters are used only for
bad quality video signals. For all other video signals, wideband
filters are used.
WYSFMOVR Wideband Y-Shaping Filter Override,
Address 0x18[7]
Setting the WYSFMOVR bit enables the use of the
WYSFM[4:0] settings for good quality video signals. For more
information, refer to the general discussion of the luma shaping
filters in the Y-Shaping Filter section and the flowchart shown
in Figure 11.
17H
178H
WYSFM[4:0] allows the user to select a different shaping
filter mode for good quality CVBS, component (YPrPb),
and S-VHS (Y/C) input signals.
When WYSFMOVR is 0, the shaping filter for good quality
video signals is selected automatically.
Setting WYSFMOVR to 1 enables manual override via
WYSFM[4:0] (default).
Rev. B | Page 27 of 100
ADV7183B
SET YSFM
YSFM IN AUTO MODE?
00000 OR 00001
YES
NO
VIDEO
QUALITY
BAD
GOOD
AUTO SELECT LUMA
SHAPING FILTER TO
COMPLEMENT COMB
USE YSFM SELECTED
FILTER REGARDLESS FOR
GOOD AND BAD VIDEO
0
SELECT WIDEBAND
FILTER AS PER
WYSFM[4:0]
SELECT AUTOMATIC
WIDEBAND FILTER
04997-011
WYSFMOVR
1
Figure 11. YSFM and WYSFM Control Flowchart
Table 30. YSFM Function
YSFM[4:0]
0'0000
0'0001 (default)
0'0010
0'0011
0'0100
0'0101
0'0110
0'0111
0'1000
0'1001
0'1010
0'1011
0'1100
0'1101
0'1110
0'1111
1'0000
1'0001
1'0010
1'0011
1'0100
1'0101
1'0110
1'0111
1'1000
1'1001
1'1010
1'1011
1'1100
1'1101
1'1110
1'1111
Description
Automatic selection including a wide notch
response (PAL/NTSC/SECAM)
Automatic selection including a narrow notch
response (PAL/NTSC/SECAM)
SVHS 1
SVHS 2
SVHS 3
SVHS 4
SVHS 5
SVHS 6
SVHS 7
SVHS 8
SVHS 9
SVHS 10
SVHS 11
SVHS 12
SVHS 13
SVHS 14
SVHS 15
SVHS 16
SVHS 17
SVHS 18 (CCIR 601)
PAL NN 1
PAL NN 2
PAL NN 3
PAL WN 1
PAL WN 2
NTSC NN 1
NTSC NN 2
NTSC NN 3
NTSC WN 1
NTSC WN 2
NTSC WN 3
Reserved
WYSFM[4:0] Wideband Y-Shaping Filter Mode,
Address 0x18[4:0]
The WYSFM[4:0] bits allow the user to manually select a shaping
filter for good quality video signals, for example, CVBS with
time-base stability, luma component of YPrPb and luma
component of Y/C. The WYSFM bits are active only if the
WYSFMOVR bit is set to 1. See the general discussion of the
shaping filter settings in the Y-Shaping Filter section.
179H
Table 31. WYSFM Function
WYSFM[4:0]
0'0000
0'0001
0'0010
0'0011
0'0100
0'0101
0'0110
0'0111
0'1000
0'1001
0'1010
0'1011
0'1100
0'1101
0'1110
0'1111
1'0000
1'0001
1'0010
1'0011 (default)
1'0100 to 1’1111
Rev. B | Page 28 of 100
Description
Do not use
Do not use
SVHS 1
SVHS 2
SVHS 3
SVHS 4
SVHS 5
SVHS 6
SVHS 7
SVHS 8
SVHS 9
SVHS 10
SVHS 11
SVHS 12
SVHS 13
SVHS 14
SVHS 15
SVHS 16
SVHS 17
SVHS 18 (CCIR 601)
Do not use
ADV7183B
COMBINED Y ANTIALIAS, NTSC NOTCH FILTERS,
Y RESAMPLE
The filter plots in Figure 12 show the S-VHS 1 (narrowest) to
S-VHS 18 (widest) shaping filter settings. Figure 14 shows the
PAL notch filter responses. The NTSC-compatible notches are
shown in Figure 15.
180H
0
18H
–10
182H
0
AMPLITUDE (dB)
–10
–20
–30
–40
–20
–50
–30
–60
–40
–70
0
2
–50
4
6
8
FREQUENCY (MHz)
10
12
04997-015
AMPLITUDE (dB)
COMBINED Y ANTIALIAS, S-VHS LOW-PASS FILTERS,
Y RESAMPLE
Figure 15. NTSC Notch Filter Response
–70
0
2
4
6
8
FREQUENCY (MHz)
10
12
04997-012
–60
Figure 12. Y S-VHS Combined Responses
COMBINED Y ANTIALIAS, CCIR MODE SHAPING FILTER,
Y RESAMPLE
0
CHROMA FILTER
Data from the digital fine clamp block is processed by three sets
of filters. The data format at this point is CVBS for CVBS inputs,
chroma only for Y/C, or U/V interleaved for YPrPb input
formats.
•
Chroma Antialias Filter (CAA). The ADV7183B oversamples the CVBS by a factor of 2 and the Chroma/PrPb
by a factor of 4. A decimating filter (CAA) is used to
preserve the active video band and to remove any out-ofband components. The CAA filter has a fixed response.
•
Chroma Shaping Filters (CSH). The shaping filter block
(CSH) can be programmed to perform a variety of lowpass responses. It can be used to selectively reduce the
bandwidth of the chroma signal for scaling or
compression.
•
Digital Resampling Filter. This block is used to allow
dynamic resampling of the video signal to alter parameters
such as the time base of a line of video. Fundamentally, the
resampler is a set of low-pass filters. The actual response is
chosen by the system without user intervention.
AMPLITUDE (dB)
–20
–40
–60
–80
–120
0
2
4
6
8
FREQUENCY (MHz)
10
12
04997-013
–100
Figure 13. Y S-VHS 18 Extra Wideband Filter (CCIR 601 Compliant)
COMBINED Y ANTIALIAS, PAL NOTCH FILTERS,
Y RESAMPLE
0
–10
The plots in Figure 16 show the overall response of all filters
together.
–20
–30
–40
–50
–60
–70
0
2
4
6
8
FREQUENCY (MHz)
10
12
04997-014
AMPLITUDE (dB)
183H
Figure 14. PAL Notch Filter Response
Rev. B | Page 29 of 100
ADV7183B
CSFM[2:0] C- Shaping Filter Mode, Address 0x17[7]
GAIN OPERATION
The C-shaping filter mode bits allow the user to select from a
range of low-pass filters, SH1 to SH5 and wideband mode for
the chrominance signal. The autoselection options automatically select from the filter options to give the specified
response. (See settings 000 and 001 in Table 32).
The gain control within the ADV7183B is performed strictly on
a digital basis. The input ADCs support a 10-bit range, mapped
into a 1.6 V analog voltage range. Gain correction occurs after
the digitization in the form of a digital multiplier.
One advantage of this architecture over the commonly used
programmable gain amplifier (PGA) before the ADCs is that
the gain is now completely independent of supply, temperature,
and process variations.
184H
Table 32. CSFM Function
CSFM[2:0]
000 (default)
001
010
011
100
101
110
111
Description
Autoselect 1.5 MHz bandwidth
Autoselect 2.17 MHz bandwidth
SH1
SH2
SH3
SH4
SH5
Wideband mode
As shown in Figure 17, the ADV7183B can decode a video
signal providing it fits into the ADC window. Two components
to this are the amplitude of the input signal and the dc level on
which it resides. The dc level is set by the clamping circuitry
(see the Clamp Operation section).
186H
187H
If the amplitude of the analog video signal is too high, clipping
can occur, resulting in visual artifacts. The analog input range
of the ADC, together with the clamp level, determines the
maximum supported amplitude of the video signal.
COMBINED C ANTIALIAS, C SHAPING FILTER,
C RESAMPLER
0
The minimum supported amplitude of the input video is
determined by the ADV7183B’s ability to retrieve horizontal
and vertical timing and to lock to the color burst, if present.
ATTENUATION (dB)
–10
–20
There are two gain control units, one each for luma and chroma
data. Both can operate independently of each other. The
chroma unit, however, can also take its gain value from the
luma path.
–30
–40
–50
The possible AGC modes are summarized in Table 33.
18H
1
2
3
4
FREQUENCY (MHz)
5
6
It is possible to freeze the automatic gain control loops. This
causes the loops to stop updating and the AGC determined
gain, at the time of the freeze, to stay active. The ACG
determined gain stays active until the automatic gain control
loop is either unfrozen, or the gain mode of the operation is
changed.
Figure 16. Chroma Shaping Filter Responses
Figure 16 shows the responses of SH1 (narrowest) to SH5
(widest) and the wide band mode (in red).
185H
The currently active gain from any of the modes can be read
back. Refer to the description of the dual function manual gain
registers, LG[11:0] Luma Gain and CG[11:0] Chroma Gain, in
the Luma Gain and Chroma Gain sections.
189H
190H
ANALOG VOLTAGE
RANGE SUPPORTED BY ADC (1.6V RANGE FOR ADV7189B)
MAXIMUM
VOLTAGE
ADC
DATA
PREPROCESSOR
(DPP)
SDP
(GAIN SELECTION ONLY)
GAIN
CONTROL
MINIMUM
VOLTAGE
CLAMP
LEVEL
Figure 17. Gain Control Overview
Rev. B | Page 30 of 100
04983-017
0
04997-016
–60
ADV7183B
Table 33. AGC Modes
Input Video Type
Any
CVBS
Luma Gain
Manual gain luma
Dependent on horizontal sync depth
Chroma Gain
Manual gain chroma
Dependent on color burst amplitude
Taken from luma path
Dependent on color burst amplitude
Taken from luma path
Dependent on color burst amplitude
Taken from luma path
Dependent on color burst amplitude
Taken from luma path
Taken from luma path
Peak white
Y/C
Dependent on horizontal sync depth
Peak white
YPrPb
Dependent on horizontal sync depth
Table 35. LAGT Function
Luma Gain
LAGC[2:0] Luma Automatic Gain Control,
Address 0x2C[7:0]
The luma automatic gain control mode bits select the mode of
operation for the gain control in the luma path.
ADI internal parameters are available to customize the peak
white gain control. Contact ADI sales for more information.
Table 34. LAGC Function
LAGC[2:0]
000
001
010 (default)
011
100
101
110
111
Description
Manual fixed gain (use LMG[11:0])
AGC (blank level to sync tip); peak white
algorithm off
AGC (blank level to sync tip); peak white
algorithm on
Reserved
Reserved
Reserved
Reserved
Freeze gain
LAGT[1:0]
00
01
10
11 (default)
Description
Slow (TC = 2 sec)
Medium (TC = 1 sec)
Fast (TC = 0.2 sec)
Adaptive
LG[11:0] Luma Gain, Address 0x2F[3:0];
Address 0x30[7:0]; LMG[11:0] Luma Manual Gain,
Address 0x2F[3:0]; Address 0x30[7:0]
Luma gain[11:0] is a dual-function register. If written to, a
desired manual luma gain can be programmed. This gain
becomes active if the LAGC[2:0] mode is switched to manual
fixed gain. Equation 1 shows how to calculate a desired gain.
If read back, this register returns the current gain value.
Depending on the setting in the LAGC[2:0] bits, one of these
gain values is returned
•
Luma manual gain value (LAGC[2:0] set to luma manual
gain mode)
LAGT[1:0] Luma Automatic Gain Timing,
Address 0x2F[7:6]
•
Luma automatic gain value (LAGC[2:0] set to any of the
automatic modes)
The luma automatic gain timing register allows the user to
influence the tracking speed of the luminance automatic gain
control. Note that this register has an effect only if the
LAGC[2:0] register is set to 001, 010, 011, or 100 (automatic
gain control modes).
Table 36. LG/LMG Function
LG[11:0]/LMG[11:0]
LMG[11:0] = X
Read/Write
Write
LG[11:0]
Read
If peak white AGC is enabled and active (see the
STATUS_1[7:0] Address 0x10[7:0] section), the actual gain
update speed is dictated by the peak white AGC loop and, as a
result, the LAGT settings have no effect. As soon as the part
leaves peak white AGC, LAGT becomes relevant again.
19H
The update speed for the peak white algorithm can be customized by the use of internal parameters. Contact ADI sales for
more information.
Rev. B | Page 31 of 100
Luma _ Gain =
(0 < LG ≤ 4095)
2048
Description
Manual gain for luma
path
Actually used gain
= 0...2
(1)
ADV7183B
For example, program the ADV7183B into manual fixed gain
mode with a desired gain of 0.89.
1.
Use Equation 1 to convert the gain:
0.89 × 2048 = 1822.72
2.
Truncate to integer value:
1822.72 = 1822
3.
Convert to hexadecimal:
1822d = 0x71E
4.
Split into two registers and program:
Luma Gain Control 1[3:0] = 0x7
Luma Gain Control 2[7:0] = 0x1E
Setting PW_UPD to 0 updates the gain once per video line.
Setting PW_UPD to 1 (default) updates the gain once per field.
BETACAM Enable Betacam Levels, Address 0x01[5]
If YPrPb data is routed through the ADV7183B, the automatic
gain control modes can target different video input levels, as
outlined in Figure 40. The BETACAM bit is valid only if the
input mode is YPrPb (component). The BETACAM bit sets the
target value for AGC operation.
192H
•
INSEL[3:0] Input Selection, Address 0x00[3:0] to find how
component video (YPrPb) can be routed through the
ADV7183B.
193H
Video Standard Selection to select the various standards,
such as those with and without pedestal.
194H
The automatic gain control (AGC) algorithms adjust the levels
based on the setting of the BETACAM bit (see Table 37).
Table 37. BETACAM Function
195H
BETACAM
0 (default)
1
Chroma Gain
CAGC[1:0] Chroma Automatic Gain Control,
Address 0x2C[1:0]
The two bits of the Color Automatic Gain Control mode select
the basic mode of operation for automatic gain control in the
chroma path.
Table 38. CAGC Function
A review of the following sections is useful:
•
The peak white and average video algorithms determine the
gain based on measurements taken from the active video. The
PW_UPD bit determines the rate of gain change. The
LAGC[2:0] must be set to the appropriate mode to enable the
peak white or average video mode in the first place. For more
information, refer to the LAGC[2:0] Luma Automatic Gain
Control,
Address 0x2C[7:0] section.
196H
Enable manual fixed gain mode:
Set LAGC[2:0] to 000
5.
PW_UPD Peak White Update, Address 0x2B[0]
Description
Assuming YPrPb is selected as input format
Selecting PAL with pedestal selects MII
Selecting PAL without pedestal selects SMPTE
Selecting NTSC with pedestal selects MII
Selecting NTSC without pedestal selects SMPTE
Assuming YPrPb is selected as input format
Selecting PAL with pedestal selects BETACAM
Selecting PAL without pedestal selects BETACAM
variant
Selecting NTSC with pedestal selects BETACAM
Selecting NTSC without pedestal selects BETACAM
variant
CAGC[1:0]
00
01
10 (default)
11
Description
Manual fixed gain (use CMG[11:0])
Use luma gain for chroma
Automatic gain (based on color burst)
Freeze chroma gain
CAGT[1:0] Chroma Automatic Gain Timing,
Address 0x2D[7:6]
The chroma automatic gain timing register allows the user to
influence the tracking speed of the chroma automatic gain control. This register has an effect only if the CAGC[1:0] register is
set to 10 (automatic gain).
Table 39. CAGT Function
CAGT[1:0]
00
01
10
11 (default)
Description
Slow (TC = 2 sec)
Medium (TC = 1 sec)
Fast (TC = 0.2 sec)
Adaptive
Table 40. Betacam Levels
Name
Y Range
Pb and Pr Range
Sync Depth
Betacam (mV)
0 to 714 (includes 7.5% pedestal)
–467 to +467
286
Betacam Variant (mV)
0 to 714
–505 to +505
286
Rev. B | Page 32 of 100
SMPTE (mV)
0 to 700
–350 to +350
300
MII (mV)
0 to 700 (includes 7.5% pedestal)
–324 to +324
300
ADV7183B
CG[11:0] Chroma Gain, Address 0x2D[3:0]; Address
0x2E[7:0] CMG[11:0] Chroma Manual Gain, Address
0x2D[3:0]; Address 0x2E[7:0]
CKILLTHR[2:0] Color Kill Threshold,
Address 0x3D[6:4]
The CKILLTHR[2:0] bits allow the user to select a threshold for
the color kill function. The threshold applies only to QAM
based (NTSC and PAL) or FM-modulated (SECAM) video
standards.
Chroma Gain[11:0] is a dual-function register. If written to, a
desired manual chroma gain can be programmed. This gain
becomes active if the CAGC[1:0] mode is switched to manual
fixed gain. Refer to Equation 2 for calculating a desired gain. If
read back, this register returns the current gain value. Depending
on the setting in the CAGC[1:0] bits, one of these gain values is
returned
•
Chroma manual gain value (CAGC[1:0] set to chroma
manual gain mode)
Table 42. CKILLTHR Function
Chroma automatic gain value (CAGC[1:0] set to any of the
automatic modes)
CKILLTHR[2:0]
000
001
010
011
100 (default)
101
110
111
Table 41. CG/CMG Function
CG[11:0]/CMG[11:0]
CMG[11:0]
Read/Write
Write
CG[11:0]
Read
Chroma _ Gain =
(0 < CG ≤ 4095 )
1024
Description
Manual gain for chroma
path
Currently active gain
= 0...4
(2)
CHROMA TRANSIENT IMPROVEMENT (CTI)
For example, freezing the automatic gain loop and reading back
the CG[11:0] register results in a value of 0x47A.
1.
Convert the readback value to decimal:
0x47A = 1146d
2.
Apply Equation 2 to convert the readback value:
1146/1024 = 1.12
The signal bandwidth allocated for chroma is typically much
smaller than that of luminance. In the past, this was a valid way
to fit a color video signal into a given overall bandwidth because
the human eye is less sensitive to chrominance than to
luminance.
The uneven bandwidth, however, can lead to visual artifacts in
sharp color transitions. At the border of two bars of color, both
components (luma and chroma) change at the same time (see
Figure 18). Due to the higher bandwidth, the signal transition
of the luma component is usually much sharper than that of the
chroma component. The color edge is not sharp but blurred, in
the worst case, over several pixels.
CKE Color Kill Enable, Address 0x2B[6]
The color kill enable bit allows the optional color kill function
to be switched on or off.
For QAM-based video standards (PAL and NTSC) and FMbased systems (SECAM), the threshold for the color kill
decision is selectable via the CKILLTHR[2:0] bits.
197H
If color kill is enabled, and if the color carrier of the incoming
video signal is less than the threshold for 128 consecutive video
lines, color processing is switched off (black and white output).
To switch the color processing back on, another 128 consecutive
lines with a color burst greater than the threshold are required.
The color kill option works only for input signals with a modulated chroma part. For component input (YPrPb), there is no
color kill.
Description
SECAM
NTSC, PAL
No color kill
Kill at < 0.5%
Kill at < 5%
Kill at < 1.5%
Kill at < 7%
Kill at < 2.5%
Kill at < 8%
Kill at < 4.0%
Kill at < 9.5%
Kill at < 8.5%
Kill at < 15%
Kill at < 16.0%
Kill at < 32%
Kill at < 32.0%
Reserved for ADI internal use only; do not
select
LUMA
SIGNAL
DEMODULATED
CHROMA
SIGNAL
LUMA SIGNAL WITH A
TRANSITION, ACCOMPANIED
BY A CHROMA TRANSITION
ORIGINAL, SLOW CHROMA
TRANSITION PRIOR TO CTI
SHARPENED CHROMA
TRANSITION AT THE
OUTPUT OF CTI
Figure 18. CTI Luma/Chroma Transition
Setting CKE to 0 disables color kill.
Setting CKE to 1 (default) enables color kill.
Rev. B | Page 33 of 100
04997-018
•
To enable the color kill function, the CKE bit must be set. For
settings 000, 001, 010, and 011, chroma demodulation inside
the ADV7183B may not work satisfactorily for poor input video
signals.
ADV7183B
The chroma transient improvement block examines the input
video data. It detects transitions of chroma and can be
programmed to steepen the chroma edges in an attempt to
artificially restore lost color bandwidth. The CTI block,
however, operates only on edges above a certain threshold to
ensure that noise is not emphasized. Care has also been taken to
ensure that edge ringing and undesirable saturation or hue
distortion are avoided.
Chroma transient improvements are needed primarily for
signals that experienced severe chroma bandwidth limitations.
For those types of signals, it is strongly recommended to enable
the CTI block via CTI_EN.
CTI_EN Chroma Transient Improvement Enable,
Address 0x4D[0]
The CTI_EN bit enables the CTI function. If set to 0, the CTI
block is inactive and the chroma transients are left untouched.
Setting CTI_EN to 0 disables the CTI block.
Table 43. CTI_AB Function
CTI_AB[1:0]
00
01
10
11 (default)
Description
Sharpest mixing between sharpened and original
chroma signal
Sharp mixing
Smooth mixing
Smoothest alpha blend function
CTI_C_TH[7:0] CTI Chroma Threshold,
Address 0x4E[7:0]
The CTI_C_TH[7:0] value is an unsigned, 8-bit number specifying how big the amplitude step in a chroma transition must be
steepened by the CTI block. Programming a small value into
this register causes even smaller edges to be steepened by the
CTI block. Making CTI_C_TH[7:0] a large value causes the
block to improve large transitions only.
The default value for CTI_C_TH[7:0] is 0x08, indicating the
threshold for the chroma edges prior to CTI.
DIGITAL NOISE REDUCTION (DNR)
Setting CTI_EN to 1 (default) enables the CTI block.
Digital noise reduction is based on the assumption that high
frequency signals with low amplitude are probably noise and
that their removal, therefore, improves picture quality.
CTI_AB_EN Chroma Transient Improvement Alpha
Blend Enable, Address 0x4D[1]
The CTI_AB_EN bit enables an alpha-blend function within
the CTI block. If set to 1, the alpha blender mixes the transient
improved chroma with the original signal. The sharpness of the
alpha blending can be configured via the CTI_AB[1:0] bits.
DNR_EN Digital Noise Reduction Enable,
Address 0x4D[5]
The DNR_EN bit enables or bypasses the DNR block.
Setting DNR_EN to 0 bypasses DNR (disables it).
For the alpha blender to be active, the CTI block must be
enabled via the CTI_EN bit.
Setting DNR_EN to 1 (default) enables digital noise reduction
on the luma data.
Setting CTI_AB_EN to 0 disables the CTI alpha blender.
Setting CTI_AB_EN to 1 (default) enables the CTI alpha-blend
mixing function.
CTI_AB[1:0] Chroma Transient Improvement Alpha
Blend, Address 0x4D[3:2]
The CTI_AB[1:0] controls the behavior of alpha-blend circuitry
that mixes the sharpened chroma signal with the original one. It
thereby controls the visual impact of CTI on the output data.
For CTI_AB[1:0] to become active, the CTI block must be
enabled via the CTI_EN bit, and the alpha blender must be
switched on via CTI_AB_EN.
Sharp blending maximizes the effect of CTI on the picture, but
can also increase the visual impact of small amplitude, high
frequency chroma noise.
DNR_TH[7:0] DNR Noise Threshold, Address 0x50[7:0]
The DNR_TH[7:0] value is an unsigned 8-bit number used to
determine the maximum edge to be interpreted as noise and,
therefore, blanked from the luma data. Programming a large
value into DNR_TH[7:0] causes the DNR block to interpret
even large transients as noise and remove them. The effect on
the video data is, therefore, more visible.
Programming a small value causes only small transients to be
seen as noise and to be removed.
The recommended DNR_TH[7:0] setting for A/V inputs is
0x04, and the recommended DNR_TH[7:0] setting for tuner
inputs is 0x0A.
The default value for DNR_TH[7:0] is 0x08, indicating the
threshold for maximum luma edges to be interpreted as noise.
Rev. B | Page 34 of 100
ADV7183B
Table 44. NSFSEL Function
COMB FILTERS
The comb filters of the ADV7183B have been greatly improved
to automatically handle video of all types, standards, and levels
of quality. The NTSC and PAL configuration registers allow the
user to customize comb filter operation, depending on which
video standard is detected (by autodetection) or selected (by
manual programming). In addition to the bits listed in this
section, there are some other ADI internal controls; contact
ADI for more information.
NSFSEL[1:0]
00 (default)
01
10
11
CTAPSN[1:0] Chroma Comb Taps NTSC, Address x38[7:6]
Table 45. CTAPSN Function
CTAPSN[1:0]
00
01
NTSC Comb Filter Settings
Used for NTSC-M/J CVBS inputs.
NSFSEL[1:0] Split Filter Selection NTSC, Address
0x19[3:2]
10 (default)
The NSFSEL[1:0] control selects how much of the overall signal
bandwidth is fed to the combs. A narrow split filter selection
gives better performance on diagonal lines, but leaves more dot
crawl in the final output image; the opposite is true for selecting a
wide bandwidth split filter.
Description
Narrow
Medium
Medium
Wide
11
Description
Do not use
NTSC chroma comb adapts 3 lines (3 taps) to
2 lines (2 taps)
NTSC chroma comb adapts 5 lines (5 taps) to
3 lines (3 taps)
NTSC chroma comb adapts 5 lines (5 taps) to
4 lines (4 taps)
CCMN[2:0] Chroma Comb Mode NTSC, Address 0x38[5:3]
Table 46. CCMN Function
CCMN[2:0]
0xx (default)
Description
Adaptive comb mode
100
101
Disable chroma comb
Fixed chroma comb (top lines of line memory)
110
Fixed chroma comb (all lines of line memory)
111
Fixed chroma comb (bottom lines of line memory)
Adaptive 3-line chroma comb for CTAPSN = 01
Adaptive 4-line chroma comb for CTAPSN = 10
Adaptive 5-line chroma comb for CTAPSN = 11
Fixed 2-line chroma comb for CTAPSN = 01
Fixed 3-line chroma comb for CTAPSN = 10
Fixed 4-line chroma comb for CTAPSN = 11
Fixed 3-line chroma comb for CTAPSN = 01
Fixed 4-line chroma comb for CTAPSN = 10
Fixed 5-line chroma comb for CTAPSN = 11
Fixed 2-line chroma comb for CTAPSN = 01
Fixed 3-line chroma comb for CTAPSN = 10
Fixed 4-line chroma comb for CTAPSN = 11
YCMN[2:0] Luma Comb Mode NTSC, Address 0x38[2:0]
Table 47.YCMN Function
YCMN[2:0]
0xx (default)
100
101
110
111
Description
Adaptive comb mode
Disable luma comb
Fixed luma comb (top lines of line memory)
Fixed luma comb (all lines of line memory)
Fixed luma comb (bottom lines of line memory)
Rev. B | Page 35 of 100
Adaptive 3-line (3 taps) luma comb
Use low-pass/notch filter; see the Y-Shaping Filter section
Fixed 2-line (2 taps) luma comb
Fixed 3-line (3 taps) luma comb
Fixed 2-line (2 taps) luma comb
198H
ADV7183B
Table 48. PSFSEL Function
PAL Comb Filter Settings
PSFSEL[1:0]
00
01 (default)
10
11
Used for PAL-B/G/H/I/D, PAL-M, PAL-Combination N,
PAL60 and NTSC443 CVBS inputs.
PSFSEL[1:0] Split Filter Selection PAL,
Address 0x19[1:0]
Description
Narrow
Medium
Wide
Widest
The PSFSEL[1:0] control selects how much of the overall signal
bandwidth is fed to the combs. A wide split filter selection
eliminates dot crawl, but shows imperfections on diagonal lines;
the opposite is true for selecting a narrow bandwidth split filter.
CTAPSP[1:0] Chroma Comb Taps PAL, Address 0x39[7:6]
Table 49. CTAPSP Function
CTAPSP[1:0]
00
01
Description
Do not use.
PAL chroma comb adapts 5 lines (3 taps) to
3 lines (2 taps); cancels cross luma only
PAL chroma comb adapts 5 lines (5 taps) to
3 lines (3 taps); cancels cross luma and hue error less well
PAL chroma comb adapts 5 lines (5 taps) to
4 lines (4 taps); cancels cross luma and hue error well
10
11 (default)
CCMP[2:0] Chroma Comb Mode PAL, Address 0x39[5:3]
Table 50. CCMP Function
CCMP[2:0]
0xx (default)
Description
Adaptive comb mode
Configuration
Adaptive 3-line chroma comb for CTAPSP = 01
Adaptive 4-line chroma comb for CTAPSP = 10
Adaptive 5-line chroma comb for CTAPSP = 11
100
101
Disable chroma comb
Fixed chroma comb (top lines of line memory)
110
Fixed chroma comb (all lines of line memory)
111
Fixed chroma comb (bottom lines of line memory)
Fixed 2-line chroma comb for CTAPSP = 01
Fixed 3-line chroma comb for CTAPSP = 10
Fixed 4-line chroma comb for CTAPSP = 11
Fixed 3-line chroma comb for CTAPSP = 01
Fixed 4-line chroma comb for CTAPSP = 10
Fixed 5-line chroma comb for CTAPSP = 11
Fixed 2-line chroma comb for CTAPSP = 01
Fixed 3-line chroma comb for CTAPSP = 10
Fixed 4-line chroma comb for CTAPSP = 11
YCMP[2:0] Luma Comb Mode PAL, Address 0x39[2:0]
Table 51. YCMP Function
YCMP[2:0]
0xx (default)
100
101
110
111
Description
Adaptive comb mode
Disable luma comb
Fixed luma comb (top lines of line memory)
Fixed luma comb (all lines of line memory)
Fixed luma comb (bottom lines of line memory)
Configuration
Adaptive 5 lines (3 taps) luma comb
Use low-pass/notch filter; see the Y-Shaping Filter section
Fixed 3 lines (2 taps) luma comb
Fixed 5 lines (3 taps) luma comb
Fixed 3 lines (2 taps) luma comb
Rev. B | Page 36 of 100
19H
ADV7183B
AV CODE INSERTION AND CONTROLS
SD_DUP_AV Duplicate AV Codes, Address 0x03[0]
2
This section describes the I C based controls that affect:
•
Insertion of AV codes into the data stream
•
Data blanking during the vertical blank interval (VBI)
•
The range of data values permitted in the output data
stream
In an 8-bit-wide output interface (Cb/Y/Cr/Y interleaved data),
the AV codes are defined as FF/00/00/AV, with AV as the
transmitted word that contains information about H/V/F.
In this output interface mode, the following assignment takes
place: Cb = FF, Y = 00, Cr = 00, and Y = AV.
The relative delay of luma vs. chroma signals
In a 16-bit output interface where Y and Cr/Cb are delivered via
separate data buses, the AV code is over the whole 16 bits. The
SD_DUP_AV bit allows the user to replicate the AV codes on
both busses, so the full AV sequence can be found on the Y bus
and on the Cr/Cb bus. See Figure 19.
Some of the decoded VBI data is inserted during the horizontal
blanking interval. See the Gemstar Data Recovery section for
more information.
20H
BT656-4 ITU Standard BT-R.656-4 Enable, Address
0x04[7]
201H
When SD_DUP_AV is 0 (default), the AV codes are in single
fashion (for 8-bit interleaved data output).
The ITU has changed the position for toggling of the V bit
within the SAV EAV codes for NTSC between revisions 3 and 4.
The BT656-4 standard bit allows the user to select an output
mode that is compliant with either the previous or the new
standard. For more information, review the standard at
www.itu.int.
When SD_DUP_AV is 1, the AV codes are duplicated (for
16-bit interfaces).
VBI_EN Vertical Blanking Interval Data Enable,
Address 0x03[7]
Note that the standard change affects NTSC only and has no
bearing on PAL.
The VBI enable bit allows data such as intercast and closed
caption data to be passed through the luma channel of the
decoder with a minimal amount of filtering. All data for Line 1
to Line 21 is passed through and available at the output port.
The ADV7183B does not blank the luma data, and automatically switches all filters along the luma data path into their
widest bandwidth. For active video, the filter settings for YSH
and YPK are restored.
When BT656-4 is 0 (default), the BT656-3 specification is used.
The V bit goes low at EAV of Line 10 and Line 273.
When BT656-4 is 1, the BT656-4 specification is used. The
V bit goes low at EAV of Line 20 and Line 283.
Refer to the BL_C_VBI Blank Chroma During VBI, Address
0x04[2] section for information on the chroma path.
20H
When VBI_EN is 0 (default), all video lines are filtered/scaled.
When VBI_EN is 1, only the active video region is
filtered/scaled.
SD_DUP_AV = 1
SD_DUP_AV = 0
16-BIT INTERFACE
16-BIT INTERFACE
Y DATA BUS
FF
00
00
AV
Y
00
AV
Y
Cr/Cb DATA BUS
FF
00
00
AV
Cb
FF
00
Cb
8-BIT INTERFACE
Cb/Y/Cr/Y
INTERLEAVED
FF
00
00
AV
AV CODE SECTION
AV CODE SECTION
AV CODE SECTION
Figure 19. AV Code Duplication Control
Rev. B | Page 37 of 100
Cb
04997-019
•
Depending on the output interface width, it can be necessary to
duplicate the AV codes from the luma path into the chroma path.
ADV7183B
BL_C_VBI Blank Chroma During VBI, Address 0x04[2]
LTA[1:0] Luma Timing Adjust, Address 0x27[1:0]
Setting BL_C_VBI high, the Cr and Cb values of all VBI lines
are blanked. This is done so any data that arrives during VBI is
not decoded as color and output through Cr and Cb. As a result,
it should be possible to send VBI lines into the decoder, then
output them through an encoder again, undistorted. Without
this blanking, any wrongly decoded color is encoded by the
video encoder; therefore, the VBI lines are distorted.
The Luma Timing Adjust register allows the user to specify a
timing difference between chroma and luma samples.
Setting BL_C_VBI to 0 decodes and outputs color during VBI.
Setting BL_C_VBI to 1 (default) blanks Cr and Cb values
during VBI.
AV codes (as per ITU-R BT-656, formerly known as CCIR-656)
consist of a fixed header made up of 0xFF and 0x00 values.
These two values are reserved and therefore cannot be used for
active video. Additionally, the ITU specifies that the nominal
range for video should be restricted to values between 16 and
235 for luma and 16 to 240 for chroma.
The RANGE bit allows the user to limit the range of values
output by the ADV7183B to the recommended value range. In
any case, it ensures that the reserved values of 255d (0xFF) and
00d (0x00) are not presented on the output pins unless they are
part of an AV code header.
Table 52. RANGE Function
Description
16 ≤ Y ≤ 235
1 ≤ Y ≤ 254
AUTO_PDC_EN Automatic Programmed Delay Control,
Address 0x27[6]
Enabling the AUTO_PDC_EN function activates a function
within the ADV7183B that automatically programs the
LTA[1:0] and CTA[2:0] to have the chroma and luma data
match delays for all modes of operation. If set, manual registers
LTA[1:0] and CTA[2:0] are not used. If the automatic mode
is disabled (via setting the AUTO_PDC_EN bit to 0), the
values programmed into LTA[1:0] and CTA[2:0] registers
become active.
When AUTO_PDC_EN is 0, the ADV7183 uses the LTA[1:0]
and CTA[2:0] values for delaying luma and chroma samples.
Refer to the LTA[1:0] Luma Timing Adjust, Address 0x27[1:0]
and the CTA[2:0] Chroma Timing Adjust, Address 0x27[5:3]
sections.
203H
CVBS input LTA[1:0] = 00
•
Y/C input LTA[1:0] = 01
•
YPrPb input LTA[1:0] = 01
LTA[1:0]
00 (default)
01
10
11
Description
No delay
Luma 1 clk (37 ns) delayed
Luma 2 clk (74 ns) early
Luma 1 clk (37 ns) early
CTA[2:0] Chroma Timing Adjust, Address 0x27[5:3]
The Chroma Timing Adjust register allows the user to specify a
timing difference between chroma and luma samples. This can
be used to compensate for external filter group delay differences
in the luma vs. chroma path, and to allow a different number of
pipeline delays while processing the video downstream. Review
this functionality together with the LTA[1:0] register.
The chroma can only be delayed/advanced in chroma pixel
steps. One chroma pixel step is equal to two luma pixels. The
programmable delay occurs after demodulation, where one
can no longer delay by luma pixel steps.
16 ≤ C/P ≤ 240
1 ≤ C/P ≤ 254
204H
•
Table 53. LTA Function
RANGE Range Selection, Address 0x04[0]
RANGE
0
1 (default)
There is a certain functionality overlap with the CTA[2:0]
register. For manual programming, use the following defaults:
For manual programming, use the following defaults:
•
CVBS input CTA[2:0] = 011
•
Y/C input CTA[2:0] = 101
•
YPrPb input CTA[2:0] =110
Table 54. CTA Function
CTA[2:0]
000
001
010
011 (default)
100
101
110
111
When AUTO_PDC_EN is 1 (default), the ADV7183B automatically determines the LTA and CTA values to have luma
and chroma aligned at the output.
Rev. B | Page 38 of 100
Description
Not used
Chroma + 2 chroma pixel (early)
Chroma + 1 chroma pixel (early)
No delay
Chroma – 1 chroma pixel (late)
Chroma – 2 chroma pixel (late)
Chroma – 3 chroma pixel (late)
Not used
ADV7183B
SYNCHRONIZATION OUTPUT SIGNALS
HSE[10:0] HS End, Address 0x34[2:0], Address 0x36[7:0]
HS Configuration
The position of this edge is controlled by placing a binary
number into HSE[10:0]. The number applied offsets the edge
with respect to an internal counter that is reset to 0 immediately
after EAV Code FF, 00, 00, XY (see Figure 20). HSE is set to
00000000000b, which is 0 LLC1 clock cycles from Count[0].
The following controls allow the user to configure the behavior
of the HS output pin only:
206H
•
Beginning of HS signal via HSB[10:0]
•
End of HS signal via HSE[10:0]
•
Polarity of HS using PHS
The default value of HSE[9:0] is 000, indicating that the HS
pulse ends zero pixels after falling edge of HS.
For example:
The HS begin and HS end registers allow the user to freely
position the HS output (pin) within the video line. The values
in HSB[10:0] and HSE[10:0] are measured in pixel units from
the falling edge of HS. Using both values, the user can program
both the position and length of the HS output signal.
1.
To shift the HS toward active video by 20 LLC1s, add
20 LLC1s to both HSB and HSE, that is, HSB[10:0] =
[00000010110], HSE[10:0] = 00000010100].
2.
To shift the HS away from active video by 20 LLC1s, add
1696 LLC1s to both HSB and HSE (for NTSC), that is,
HSB[10:0] = [11010100010], HSE[10:0] = [11010100000].
1696 is derived from the NTSC total number of pixels =
1716.
HSB[10:0] HS Begin, Address 0x34[6:4], Address
0x35[7:0]
The position of this edge is controlled by placing a binary
number into HSB[10:0]. The number applied offsets the edge
with respect to an internal counter that is reset to 0 immediately
after EAV Code FF, 00, 00, XY (see Figure 20). HSB is set to
00000000010b, which is 2 LLC1 clock cycles from Count[0].
To move 20 LLC1s away from active video is equal to
subtracting 20 from 1716 and adding the result in binary to
both HSB[10:0] and HSE[10:0].
205H
The default value of HSB[10:0] is 0x002, indicating the HS pulse
starts two pixels after the falling edge of HS.
PHS Polarity HS, Address 0x37[7]
The polarity of the HS pin can be inverted using the PHS bit.
When PHS is 0 (default), HS is active high.
When PHS is 1, HS is active low.
Table 55. HS Timing Parameters (see Figure 20)
207H
HS Begin Adjust
(HSB[10:0])
(Default)
00000000010b
00000000010b
00000000010b
Standard
NTSC
NTSC Square Pixel
PAL
HS End Adjust
(HSE[10:0]) (Default)
00000000000b
00000000000b
00000000000b
Characteristic
HS to Active Video
(LLC1 Clock Cycles)
(C in Figure 20) (Default)
272
276
284
208H
Active Video
Samples/Line
(D in Figure 20)
720Y + 720C = 1440
640Y + 640C = 1280
720Y + 720C = 1440
Total LLC1
Clock Cycles
(E in Figure 20)
1716
1560
1728
209H
210H
LLC1
PIXEL
BUS
Cr
ACTIVE
VIDEO
Y
FF
00
00
XY
80
10
80
10
EAV
80
10
FF
00
H BLANK
00
SAV
XY
Cb
Y
Cr
Y
Cb
Y
Cr
ACTIVE VIDEO
HS
HSB[10:0]
C
D
E
D
E
Figure 20. HS Timing
Rev. B | Page 39 of 100
04997-020
HSE[10:0]
4 LLC1
ADV7183B
VS and FIELD Configuration
The following controls allow the user to configure the behavior
of the VS and FIELD output pins and to generate embedded AV
codes:
•
ADV encoder-compatible signals via NEWAVMODE
•
PVS, PF
•
HVSTIM
•
VSBHO, VSBHE
•
VSEHO, VSEHE
•
For NTSC control:
•
VSBHO VS Begin Horizontal Position Odd,
Address 0x32[7]
The VSBHO and VSBHE bits select the position within a line at
which the VS pin (not the bit in the AV code) becomes active.
Some follow-on chips require the VS pin to change state only
when HS is high/low.
When VSBHO is 0 (default), the VS pin goes high at the middle
of a line of video (odd field).
When VSBHO is 1, the VS pin changes state at the start of a line
(odd field).
VSBHE VS Begin Horizontal Position Even,
Address 0x32[6]
•
NVBEGDELO, NVBEGDELE, NVBEGSIGN,
NVBEG[4:0]
•
NVENDDELO, NVENDDELE, NVENDSIGN,
NVEND[4:0]
•
NFTOGDELO, NFTOGDELE, NFTOGSIGN,
NFTOG[4:0]
The VSBHO and VSBHE bits select the position within a line at
which the VS pin (not the bit in the AV code) becomes active.
Some follow-on chips require the VS pin to change state when
only HS is high/low.
When VSBHE is 0, the VS pin goes high at the middle of a line
of video (even field).
When VSBHE is 1 (default), the VS pin changes state at the start
of a line (even field).
For PAL control:
•
PVBEGDELO, PVBEGDELE, PVBEGSIGN,
PVBEG[4:0]
VSEHO VS End Horizontal Position Odd,
Address 0x33[7]
•
PVENDDELO, PVENDDELE, PVENDSIGN,
PVEND[4:0]
•
PFTOGDELO, PFTOGDELE, PFTOGSIGN,
PFTOG[4:0]
The VSEHO and VSEHE bits select the position within a line at
which the VS pin (not the bit in the AV code) becomes active.
Some follow-on chips require the VS pin to change state only
when HS is high/low.
NEWAVMODE New AV Mode, Address 0x31[4]
When VSEHO is 0 (default), the VS pin goes low (inactive) at
the middle of a line of video (odd field).
When NEWAVMODE is 0, EAV/SAV codes are generated to
suit ADI encoders. No adjustments are possible.
When VSEHO is 1, the VS pin changes state at the start of a line
(odd field).
Setting NEWAVMODE to 1 (default) enables the manual posi-tion
of the Vsync, Field, and AV codes using Register 0x34 to Register
0x37 and Register 0xE5 to Register 0xEA. Default register settings
are CCIR656-compliant; see Figure 21 for NTSC and Figure 26 for
PAL. For recommended manual user settings, see Table 56 and
Figure 22 for NTSC; see Table 57 and Figure 27 for PAL.
21H
21H
214H
213H
215H
VSEHE VS End Horizontal Position Even,
Address 0x33[6]
The VSEHO and VSEHE bits select the position within a line at
which the VS pin (not the bit in the AV code) becomes active.
Some follow-on chips require the VS pin to change state only
when HS is high/low.
216H
HVSTIM Horizontal VS Timing, Address 0x31[3]
The HVSTIM bit allows the user to select where the VS signal is
being asserted within a line of video. Some interface circuitry
can require VS to go low while HS is low.
When VSEHE is 0 (default), the VS pin goes low (inactive) at
the middle of a line of video (even field).
When VSEHE is 1, the VS pin changes state at the start of a line
(even field).
When HVSTIM is 0 (default), the start of the line is relative
to HSE.
PVS Polarity VS, Address 0x37[5]
When HVSTIM is 1, the start of the line is relative to HSB.
When PVS is 0 (default), VS is active high.
The polarity of the VS pin can be inverted using the PVS bit.
Rev. B | Page 40 of 100
ADV7183B
When PVS is 1, VS is active low. PF Polarity FIELD,
Address 0x37[3]
The polarity of the FIELD pin can be inverted using the PF bit.
When PF is 0 (default), FIELD is active high.
When PF is 1, FIELD is active low.
FIELD 1
525
1
2
3
4
5
6
7
8
9
10
11
12
13
19
20
21
22
OUTPUT
VIDEO
H
V
NVBEG[4:0] = 0x5
1BT.656-4
NVEND[4:0] = 0x4
REG 0x04, BIT 7 = 1
F
NFTOG[4:0] = 0x3
FIELD 2
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
283
284
285
OUTPUT
VIDEO
H
V
NVBEG[4:0] = 0x5
1BT.656-4
NVEND[4:0] = 0x4
REG 0x04, BIT 7 = 1
F
04997-021
NFTOG[4:0] = 0x3
1APPLIES
IF NEWAVMODE = 0:
MUST BE MANUALLY SHIFTED IF NEWAVMODE = 1.
Figure 21. NTSC Default (BT.656). The Polarity of H, V, and F is Embedded in the Data.
FIELD 1
525
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
21
22
OUTPUT
VIDEO
HS
OUTPUT
VS
OUTPUT
NVBEG[4:0] =0x0
FIELD
OUTPUT
NVEND[4:0] = 0x3
NFTOG[4:0] = 0x5
FIELD 2
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
284
285
OUTPUT
VIDEO
HS
OUTPUT
VS
OUTPUT
NVBEG[4:0] = 0x0
NVEND[4:0] = 0x3
FIELD
OUTPUT
04997-022
NFTOG[4:0] = 0x5
Figure 22. NTSC Typical Vsync/Field Positions Using Register Writes in Table 56
217H
Rev. B | Page 41 of 100
ADV7183B
Table 56. Recommended User Settings for NTSC (See Figure 22)
218H
Register
0x31
0x32
0x33
0x34
0x35
0x36
0x37
0xE5
0xE6
0xE7
Register Name
Vsync Field Control 1
Vsync Field Control 2
Vsync Field Control 3
Hsync Pos. Control 1
Hsync Pos. Control 2
Hsync Pos. Control 3
Polarity
NTSV_V_Bit_Beg
NTSC_V_Bit_End
NTSC_F_Bit_Tog
1
NVBEGSIGN
ADVANCE BEGIN OF
VSYNC BY NVBEG[4:0]
NVBEGDELO NTSC Vsync Begin Delay on Odd Field,
Address 0xE5[7]
0
When NVBEGDELO is 0 (default), there is no delay.
DELAY BEGIN OF
VSYNC BY NVBEG[4:0]
Setting NVBEGDELO to 1, delay Vsync going high on an odd
field by a line relative to NVBEG.
NOT VALID FOR USER
PROGRAMMING
NVBEGDELE NTSC Vsync Begin Delay on Even Field,
Address 0xE5[6]
ODD FIELD?
YES
Write
0x1A
0x81
0x84
0x00
0x00
0x7D
0xA1
0x41
0x84
0x06
NO
When NVBEGDELE is 0 (default), there is no delay.
NVBEGDELO
1
Setting NVBEGDELE to 1 delays Vsync going high on an even
field by a line relative to NVBEG.
NVBEGDELE
0
0
1
NVBEGSIGN NTSC Vsync Begin Sign, Address 0xE5[5]
ADDITIONAL
DELAY BY
1 LINE
Setting NVBEGSIGN to 0 delays the start of Vsync. Set for user
manual programming.
ADDITIONAL
DELAY BY
1 LINE
Setting NVBEGSIGN to 1 (default), advances the start of Vsync.
Not recommended for user programming.
VSBHO
VSBHE
NVBEG[4:0] NTSC Vsync Begin, Address 0xE5[4:0]
1
0
0
ADVANCE BY
0.5 LINE
1
The default value of NVBEG is 00101, indicating the NTSC
Vsync begin position.
ADVANCE BY
0.5 LINE
VSYNC BEGIN
04997-023
For all NTSC/PAL Vsync timing controls, both the V bit in the
AV code and the Vsync on the VS pin are modified.
Figure 23. NTSC Vsync Begin
Rev. B | Page 42 of 100
ADV7183B
NVEND NTSC[4:0] Vsync End, Address 0xE6[4:0]
1
NVENDSIGN
ADVANCE END OF
VSYNC BY NVEND[4:0]
0
The default value of NVEND is 00100, indicating the NTSC
Vsync end position.
DELAY END OF VSYNC
BY NVEND[4:0]
For all NTSC/PAL Vsync timing controls, both the V bit in the
AV code and the Vsync on the VS pin are modified.
NOT VALID FOR USER
PROGRAMMING
NFTOGDELO NTSC Field Toggle Delay on Odd Field,
Address 0xE7[7]
ODD FIELD?
YES
NO
When NFTOGDELO is 0 (default), there is no delay.
NVENDDELO
1
Setting NFTOGDELO to 1 delays the field toggle/transition on
an odd field by a line relative to NFTOG.
NVENDDELE
0
0
ADDITIONAL
DELAY BY
1 LINE
1
NFTOGDELE NTSC Field Toggle Delay on Even Field,
Address 0xE7[6]
ADDITIONAL
DELAY BY
1 LINE
When NFTOGDELE is 0, there is no delay.
Setting NFTOGDELE to 1 (default) delays the field toggle/
transition on an even field by a line relative to NFTOG.
VSEHO
0
0
ADVANCE BY
0.5 LINE
1
1
ADVANCE BY
0.5 LINE
VSYNC END
NFTOGSIGN
ADVANCE TOGGLE OF
FIELD BY NFTOG[4:0]
04997-024
1
VSEHE
0
DELAY TOGGLE OF
FIELD BY NFTOG[4:0]
NOT VALID FOR USER
PROGRAMMING
ODD FIELD?
Figure 24. NTSC Vsync End
NVENDDELO NTSC Vsync End Delay on Odd Field,
Address 0xE6[7]
YES
NO
NFTOGDELO
NFTOGDELE
When NVENDDELO is 0 (default), there is no delay.
0
0
ADDITIONAL
DELAY BY
1 LINE
NVENDDELE NTSC Vsync End Delay on Even Field,
Address 0xE6[6]
When NVENDDELE is set to 0 (default), there is no delay.
1
ADDITIONAL
DELAY BY
1 LINE
FIELD
TOGGLE
Setting NVENDDELE to 1 delays Vsync from going low on an
even field by a line relative to NVEND.
04997-025
1
Setting NVENDDELO to 1 delays Vsync from going low on an
odd field by a line relative to NVEND.
Figure 25. NTSC FIELD Toggle
NVENDSIGN NTSC Vsync End Sign, Address 0xE6[5]
NFTOGSIGN NTSC Field Toggle Sign, Address 0xE7[5]
Setting NVENDSIGN to 0 (default) delays the end of Vsync
(default). Set for user manual programming.
Setting NFTOGSIGN to 0 delays the field transition. Set for
user manual programming.
Setting NVENDSIGN to 1 advances the end of Vsync. Not
recommended for user programming.
Setting NFTOGSIGN to 1 (default) advances the field
transition. Not recommended for user programming.
Rev. B | Page 43 of 100
ADV7183B
NFTOG[4:0] NTSC Field Toggle, Address 0xE7[4:0]
Table 57. Recommended User Settings for PAL (see Figure 27)
The default value of NFTOG is 00011, indicating the NTSC
Field toggle position.
Register
0x31
0x32
0x33
0x34
0x35
0x36
0x37
0xE8
0xE9
0xEA
219H
For all NTSC/PAL Field timing controls, both the F bit in the
AV code and the Field signal on the FIELD pin are modified.
Register Name
Vsync Field Control 1
Vsync Field Control 2
Vsync Field Control 3
Hsync Pos. Control 1
Hsync Pos. Control 2
Hsync Pos. Control 3
Polarity
PAL_V_Bit_Beg
PAL_V_Bit_End
PAL_F_Bit_Tog
Write
0x1A
0x81
0x84
0x00
0x00
0x7D
0x29
0x41
0x84
0x06
FIELD 1
622
623
624
625
1
2
3
4
5
6
7
8
9
10
22
23
24
OUTPUT
VIDEO
H
V
PVBEG[4:0] = 0x5
PVEND[4:0] = 0x4
F
PFTOG[4:0] = 0x3
FIELD 2
310
311
312
313
314
315
316
317
318
319
320
321
322
335
336
337
OUTPUT
VIDEO
H
V
PVEND[4:0] = 0x4
04997-026
PVBEG[4:0] = 0x5
F
PFTOG[4:0] = 0x3
Figure 26. PAL Default (BT.656). The Polarity of H, V, and F is Embedded in the Data.
FIELD 1
622
623
624
625
1
2
3
4
5
6
7
8
9
10
11
23
24
OUTPUT
VIDEO
HS
OUTPUT
VS
OUTPUT
PVBEG[4:0] = 0x1
FIELD
OUTPUT
PVEND[4:0] = 0x4
PFTOG[4:0] = 0x6
FIELD 2
310
311
312
313
314
315
316
317
318
319
320
321
322
323
336
337
OUTPUT
VIDEO
HS
OUTPUT
VS
OUTPUT
PVEND[4:0] = 0x4
PFTOG[4:0] = 0x6
Figure 27. PAL Typical Vsync/Field Positions Using Register Writes in Table 57
20H
Rev. B | Page 44 of 100
04997-027
PVBEG[4:0] = 0x1
FIELD
OUTPUT
ADV7183B
1
PVBEGSIGN
0
PVBEG[4:0] PAL Vsync Begin, Address 0xE8[4:0]
ADVANCE BEGIN OF
VSYNC BY PVBEG[4:0]
The default value of PVBEG is 00101, indicating the PAL Vsync
begin position.
DELAY BEGIN OF
VSYNC BY PVBEG[4:0]
For all NTSC/PAL Vsync timing controls, both the V bit in the
AV code and the Vsync on the VS pin are modified.
NOT VALID FOR USER
PROGRAMMING
ODD FIELD?
YES
NO
1
PVBEGDELO
PVENDSIGN
PVBEGDELE
ADVANCE END OF
VSYNC BY PVEND[4:0]
0
0
ADDITIONAL
DELAY BY
1 LINE
1
NOT VALID FOR USER
PROGRAMMING
ADDITIONAL
DELAY BY
1 LINE
VSBHO
0
0
ADVANCE BY
0.5 LINE
DELAY END OF VSYNC
BY PVEND[4:0]
1
ODD FIELD?
YES
NO
VSBHE
PVENDDELO
PVENDDELE
1
1
ADVANCE BY
0.5 LINE
ADDITIONAL
DELAY BY
1 LINE
ADDITIONAL
DELAY BY
1 LINE
VSEHO
VSEHE
VSYNC BEGIN
04997-028
1
0
Figure 28. PAL Vsync Begin
0
1
PVBEGDELO PAL Vsync Begin Delay on Odd Field,
Address 0xE8[7]
0
0
0
ADVANCE BY
0.5 LINE
1
1
ADVANCE BY
0.5 LINE
Setting PVBEGDELO to 1 delays Vsync going high on an odd
field by a line relative to PVBEG.
VSYNC END
04997-029
When PVBEGDELO is 0 (default), there is no delay.
Figure 29. PAL Vsync End
PVBEGDELE PAL Vsync Begin Delay on Even Field,
Address 0xE8[6]
PVENDDELO PAL Vsync End Delay on Odd Field,
Address 0xE9[7]
When PVBEGDELE is 0, there is no delay.
When PVENDDELO is 0 (default), there is no delay.
Setting PVBEGDELE to 1 (default) delays Vsync going high on
an even field by a line relative to PVBEG.
PVBEGSIGN PAL Vsync Begin Sign, Address 0xE8[5]
Setting PVBEGSIGN to 0 delays the beginning of Vsync. Set for
user manual programming.
Setting PVENDDELO to 1 delays Vsync going low on an odd
field by a line relative to PVEND.
PVENDDELE PAL Vsync End Delay on Even Field,
Address 0xE9[6]
When PVENDDELE is 0 (default), there is no delay.
Setting PVBEGSIGN to 1 (default) advances the beginning of
Vsync. Not recommended for user programming.
Setting PVENDDELE to 1 delays Vsync going low on an even
field by a line relative to PVEND.
Rev. B | Page 45 of 100
ADV7183B
PVENDSIGN PAL Vsync End Sign, Address 0xE9[5]
1
Setting PVENDSIGN to 0 (default) delays the end of Vsync. Set
for user manual programming.
PFTOGSIGN
ADVANCE TOGGLE OF
FIELD BY PTOG[4:0]
Setting PVENDSIGN to 1 advances the end of Vsync. Not
recommended for user programming.
0
DELAY TOGGLE OF
FIELD BY PFTOG[4:0]
NOT VALID FOR USER
PROGRAMMING
PVEND[4:0] PAL Vsync End, Address 0xE9[4:0]
ODD FIELD?
For all NTSC/PAL Vsync timing controls, both the V bit in the
AV code and the Vsync on the VS pin are modified.
YES
NO
PFTOGDELO
PFTOGDELE
1
PFTOGDELO PAL Field Toggle Delay on Odd Field,
Address 0xEA[7]
0
0
ADDITIONAL
DELAY BY
1 LINE
When PFTOGDELO is 0 (default), there is no delay.
Setting PFTOGDELO to 1 delays the F toggle/transition on an
odd field by a line relative to PFTOG.
1
ADDITIONAL
DELAY BY
1 LINE
FIELD
TOGGLE
PFTOGDELE PAL Field Toggle Delay on Even Field,
Address 0xEA[6]
04997-030
The default value of PVEND is 10100, indicating the PAL Vsync
end position.
Figure 30. PAL F Toggle
SYNC PROCESSING
When PFTOGDELE is 0, there is no delay.
The ADV7183B has two additional sync processing blocks that
postprocess the raw synchronization information extracted
from the digitized input video. If desired, the blocks can be
disabled via the following two I2C bits.
Setting PFTOGDELE to 1 (default) delays the F toggle/
transition on an even field by a line relative to PFTOG.
PFTOGSIGN PAL Field Toggle Sign, Address 0xEA[5]
Setting PFTOGSIGN to 0 delays the field transition. Set for user
manual programming.
ENHSPLL Enable Hsync Processor, Address 0x01[6]
Setting PFTOGSIGN to 1 (default) advances the field transition.
Not recommended for user programming.
The Hsync processor is designed to filter incoming Hsyncs that
have been corrupted by noise, providing improved performance
for video signals with stable time bases but poor SNR.
PFTOG PAL Field Toggle, Address 0xEA[4:0]
Setting ENHSPLL to 0 disables the Hsync processor.
The default value of PFTOG is 00011, indicating the PAL field
toggle position.
Setting ENHSPLL to 1 (default) enables the Hsync processor.
For all NTSC/PAL Field timing controls, the F bit in the AV
code and the field signal on the FIELD/DE pin are modified.
ENVSPROC Enable Vsync Processor, Address 0x01[3]
This block provides extra filtering of the detected Vsyncs to give
improved vertical lock.
Setting ENVSPROC to 0 disables the Vsync processor.
Setting ENVSPROC to 1 (default) enables the Vsync processor.
Rev. B | Page 46 of 100
ADV7183B
VBI DATA DECODE
The following low data rate VBI signals can be decoded by the
ADV7183B:
•
Wide screen signaling (WSS)
•
Copy generation management systems (CGMS)
•
Closed captioning (CCAP)
•
EDTV
•
Gemstar 1×- and 2×-compatible data recovery
CCAPD Closed Caption Detected, Address 0x90[1]
A Logic 1 for this bit indicates that the data in the CCAP1 and
CCAP2 registers is valid.
The CCAPD bit goes high if the rising edge of the start bit is
detected within a time window and if the polarity of the parity
bit matches the data transmitted.
When CCAPD is 0, no CCAP sequences are detected and
confidence in the decoded data is low.
The presence of any of the above signals is detected and, if
applicable, a parity check is performed. The result of this testing
is contained in a confidence bit in the VBI Info[7:0] register.
Users are encouraged to first examine the VBI Info register
before reading the corresponding data registers. All VBI data
decode bits are read only.
All VBI data registers are double-buffered with the field signals.
This means that data is extracted from the video lines and
appears in the appropriate I2C registers with the next field
transition. They are then static until the next field.
The user should start an I2C read sequence with VS by first
examining the VBI Info register. Then, depending on what data
was detected, the appropriate data registers should be read.
Note that the data registers are filled with decoded VBI data
even if their corresponding detection bits are low; it is likely
that bits within the decoded data stream are wrong.
The closed captioning data (CCAP) is available in the I2C
registers and is also inserted into the output video data stream
during horizontal blanking.
When CCAPD is 1, the CCAP sequence is detected and
confidence in the decoded data is high.
EDTVD EDTV Sequence Detected, Address 0x90[2]
A Logic 1 for this bit indicates the data in the EDTV1, 2, 3
registers is valid.
The EDTVD bit goes high if the rising edge of the start bit is
detected within a time window and if the polarity of the parity
bit matches the data transmitted.
When EDTVD is 0, no EDTV sequence is detected and
confidence in the decoded data is low.
When EDTVD is 1, an EDTV sequence is detected and
confidence in the decoded data is high.
CGMSD CGMS-A Sequence Detected, Address 0x90[3]
Logic 1 for this bit indicates that the data in the CGMS1, 2, 3
registers is valid. The CGMSD bit goes high if a valid CRC
checksum has been calculated from a received CGMS packet.
When CGMSD is 0, no CGMS transmission is detected and
confidence in the decoded data is low.
The Gemstar-compatible data is not available in the I2C
registers and is inserted into the data stream only during
horizontal blanking.
When CGMSD is 1, the CGMS sequence is decoded and
confidence in the decoded data is high.
WSSD Wide Screen Signaling Detected, Address 0x90[0]
For certain video sources, the CRC data bits can have an invalid
format. In these circumstances, the CRC checksum validation
procedure can be disabled. The CGMSD bit goes high if the
rising edge of the start bit is detected within a time window.
CRC_ENABLE CRC, Address 0xB2[2]
Logic 1 for this bit indicates the data in the WSS1 and WSS2
registers is valid.
The WSSD bit goes high if the rising edge of the start bit is
detected within a time window and if the polarity of the parity
bit matches the data transmitted.
When WSSD is 0, no WSS is detected and confidence in the
decoded data is low.
When WSSD is 1, WSS is detected and confidence in the
decoded data is high.
When CRC_ENABLE is 0, no CRC check is performed. The
CGMSD bit goes high if the rising edge of the start bit is
detected within a time window.
When CRC_ENABLE is 1 (default), CRC checksum is used to
validate the CGMS sequence. The CGMSD bit goes high for a
valid checksum. The default is ADI’s recommended setting.
Rev. B | Page 47 of 100
ADV7183B
Wide Screen Signaling Data
WSS1[7:0], Address 0x91[7:0],
WSS2[7:0], Address 0x92[7:0]
EDTV Data Registers
EDTV1[7:0], Address 0x93[7:0],
EDTV2[7:0], Address 0x94[7:0],
EDTV3[7:0], Address 0x95[7:0]
Figure 31 shows the bit correspondence between the analog
video waveform and the WSS1/WSS2 registers. WSS2[7:6] are
undetermined and should be masked out by software.
21H
Figure 32 shows the bit correspondence between the analog
video waveform and the EDTV1/EDTV2/EDTV3 registers.
2H
EDTV3[7:6] are undetermined and should be masked out by
software. EDTV3[5] is reserved for future use and, for now,
contains 0. The 3 LSBs of the EDTV waveform are currently not
supported.
WSS1[7:0]
0
1
2
3
4
5
WSS2[5:0]
6
7
0
1
2
3
4
5
START
CODE
RUN-IN
SEQUENCE
ACTIVE
VIDEO
11.0μs
04997-031
38.4μs
42.5μs
Figure 31. WSS Data Extraction
Table 58. WSS Access Information
Signal Name
WSS1[7:0]
WSS2[5:0]
Register Location
WSS 1[7:0]
WSS 2[5:0]
EDTV1[7:0]
0
1
Address
0x91
0x92
145d
146d
EDTV2[7:0]
Register Default Value
Readback Only
Readback Only
EDTV3[5:0]
2
NOT SUPPORTED
4
5
6
7
0
1
2 3 4
5
6 7
0
1 2
3
4
5
04997-032
3
Figure 32. EDTV Data Extraction
Table 59. EDTV Access Information
Signal Name
EDTV1[7:0]
EDTV2[7:0]
EDTV3[7:0]
Register Location
EDTV 1[7:0]
EDTV 2[7:0]
EDTV 3[7:0]
147d
148d
149d
Address
0x93
0x94
0x95
Rev. B | Page 48 of 100
Register Default Value
Readback only
Readback only
Readback only
ADV7183B
Closed Caption Data Registers
CCAP1[7:0], Address 0x99[7:0],
CCAP2[7:0], Address 0x9A[7:0]
CGMS Data Registers
CGMS1[7:0], Address 0x96[7:0],
CGMS2[7:0], Address 0x97[7:0],
CGMS3[7:0], Address 0x98[7:0]
Figure 34 shows the bit correspondence between the analog
video waveform and the CCAP1/CCAP2 registers.
24H
Figure 33 shows the bit correspondence between the analog
video waveform and the CGMS1/CGMS2/CGMS3 registers.
CGMS3[7:4] are undetermined and should be masked out by
software.
23H
CCAP1[7] contains the parity bit from the first word.
CCAP2[7] contains the parity bit from the second word.
Refer to the GDECAD Gemstar Decode Ancillary Data Format,
Address 0x4C[0] section.
25H
+100 IRE
REF
CGMS1[7:0]
+70 IRE
0
1
2
3
4
5
CGMS2[7:0]
6
7
0
1
2
3
4
CGMS3[3:0]
5
6
7
0
1
2
3
0 IRE
49.1ms ± 0.5μs
11.2μs
04997-033
–40 IRE
CRC SEQUENCE
2.235μs ± 20ns
Figure 33. CGMS Data Extraction
Table 60. CGMS Access Information
Signal Name
CGMS1[7:0]
CGMS2[7:0]
CGMS3[3:0]
Register Location
CGMS 1[7:0]
CGMS 2[7:0]
CGMS 3[3:0]
150d
151d
152d
10.5 ± 0.25μs
Address
0x96
0x97
0x98
Register Default Value
Readback only
Readback only
Readback only
12.91μs
7 CYCLES
OF 0.5035MHz
(CLOCK RUN-IN)
CCAP1[7:0]
CCAP2[7:0]
0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
BYTE 0
40 IRE
P
A
R
I
T
Y
P
A
R
I
T
Y
BYTE 1
REFERENCE COLOR BURST
(9 CYCLES)
FREQUENCY = FSC = 3.579545MHz
AMPLITUDE = 40 IRE
10.003μs
27.382μs
33.764μs
Figure 34. Closed Caption Data Extraction
Table 61. CCAP Access Information
Signal Name
CCAP1[7:0]
CCAP2[7:0]
Register Location
CCAP1[7:0]
CCAP2[7:0]
153d
154d
Address
0x99
0x9A
Rev. B | Page 49 of 100
Register Default Value
Readback only
Readback only
04997-034
S
T
A
R
T
50 IRE
ADV7183B
Letterbox Detection
Incoming video signals may conform to different aspect ratios
(16:9 wide screen of 4:3 standard). For certain transmissions in
the wide screen format, a digital sequence (WSS) is transmitted
with the video signal. If a WSS sequence is provided, the aspect
ratio of the video can be derived from the digitally decoded bits
WSS contains.
In the absence of a WSS sequence, letterbox detection may be
used to find wide screen signals. The detection algorithm
examines the active video content of lines at the start and end of
a field. If black lines are detected, this indicates that the picture
currently displayed is in wide screen format.
The active video content (luminance magnitude) over a line of
video is summed together. At the end of a line, this accumulated
value is compared with a threshold, and a decision is made as to
whether or not a particular line is black. The threshold value
needed depends on the type of input signal; some control is
provided via LB_TH[4:0].
LB_LCT[7:0] Letterbox Line Count Top, Address
0x9B[7:0], LB_LCM[7:0] Letterbox Line Count Mid,
Address 0x9C[7:0], LB_LCB[7:0] Letterbox Line Count
Bottom, Address 0x9D[7:0]
Table 62. LB_LCx Access Information
Signal Name
LB_LCT[7:0]
LB_LCM[7:0]
LB_LCB[7:0]
Address
0x9B
0x9C
0x9D
Register Default Value
Readback only
Readback only
Readback only
LB_TH[4:0] Letterbox Threshold Control, Address
0xDC[4:0]
Table 63. LB_TH Function
LB_TH[4:0]
01100 (default)
01101 to 10000
00000 to 01011
Description
Default threshold for detection of black lines
Increase threshold (need larger active video
content before identifying nonblack lines)
Decrease threshold (even small noise levels
can cause the detection of nonblack lines)
Detection at the Start of a Field
LB_SL[3:0] Letterbox Start Line, Address 0xDD[7:4]
The ADV7183B expects a section of at least six consecutive
black lines of video at the top of a field. Once those lines are
detected, Register LB_LCT[7:0] reports back the number of
black lines actually found. By default, the ADV7183B starts
looking for those black lines in sync with the beginning of
active video, for example, straight after the last VBI video line.
LB_SL[3:0] allows the user to set the start of letterbox detection
from the beginning of a frame on a line-by-line basis. The
detection window closes in the middle of the field.
The LB_SL[3:0] bits are set at 0100b by default. This means the
letterbox detection window starts after the EDTV VBI data line.
For an NTSC signal, this window is from Line 23 to Line 286.
Detection at the End of a Field
The ADV7183B expects at least six continuous lines of black
video at the bottom of a field before reporting back the number
of lines actually found via the LB_LCB[7:0] value. The activity
window for letterbox detection (end of field) starts in the
middle of an active field. Its end is programmable via
LB_EL[3:0].
Detection at the Midrange
Some transmissions of wide screen video include subtitles
within the lower black box. If the ADV7183B finds at least two
black lines followed by some more nonblack video, for example,
the subtitle, and is then followed by the remainder of the
bottom black block, it reports back a midcount via LB_LCM[7:0].
If no subtitles are found, LB_LCM[7:0] reports the same number
as LB_LCB[7:0].
Changing the bits to 0101, the detection window starts on
Line 24 and ends on Line 287.
LB_EL[3:0] Letterbox End Line, Address 0xDD[3:0]
The LB_EL[3:0] bits are set at 1101b by default. This means the
letterbox detection window ends with the last active video line.
For an NTSC signal, this window is from Line 262 to Line 525.
Changing the bits to 1100, the detection window starts on
Line 261 and ends on Line 254.
Gemstar Data Recovery
The Gemstar-compatible data recovery block (GSCD) supports
1× and 2× data transmissions. It can also serve as a closed
caption decoder. Gemstar-compatible data transmissions can
occur only in NTSC. Closed caption data can be decoded in
both PAL and NTSC.
The block is configured via I2C in the following ways:
•
•
•
There is a 2-field delay in the reporting of any line count
parameters.
There is no letterbox detected bit. The user is asked to read the
LB_LCT[7:0] and LB_LCB[7:0] register values and to conclude
whether or not the letterbox-type video is present in software.
Rev. B | Page 50 of 100
GDECEL[15:0] allow data recovery on selected video lines
on even fields to be enabled and disabled.
GDECOL[15:0] enable the data recovery on selected lines
for odd fields.
GDECAD configures the way in which data is embedded
in the video data stream.
ADV7183B
Entries within the packet are as follows:
The recovered data is not available through I2C, but is inserted
into the horizontal blanking period of an ITU-R BT656-compatible data stream. The data format is intended to comply with
the recommendation by the International Telecommunications
Union, ITU-R BT.1364. For more information, see the ITU
website at www.itu.ch. See Figure 35.
6H
•
Fixed preamble sequence of 0x00, 0xFF, 0xFF.
•
Data identification word (DID). The value for the DID
marking a Gemstar or CCAP data packet is 0x140
(10-bit value).
•
Secondary data identification word (SDID) contains
information about the video line from which data was
retrieved, whether the Gemstar transmission was of 1× or
2× format, and whether it was retrieved from an even or
odd field.
•
Data count byte, giving the number of user data-words that
follow.
•
User data section.
•
Optional padding to ensure the length of the user dataword section of a packet is a multiple of four bytes
(requirement as set in ITU-R BT.1364).
•
Checksum byte.
26H
The format of the data packet depends on the following criteria:
•
Transmission is 1× or 2×.
•
Data is output in 8-bit or 4-bit format (see the description
of the GDECAD Gemstar Decode Ancillary Data Format,
Address 0x4C[0] bit).
27H
Data is closed caption (CCAP) or Gemstar-compatible.
Data packets are output if the corresponding enable bit is set
(see the GDECEL and GDECOL descriptions) and if the
decoder detects the presence of data. This means that for video
lines where no data has been decoded, no data packet is output
even if the corresponding line enable bit is set.
Each data packet starts immediately after the EAV code of the
preceding line. See Figure 35 and Table 64, which show the
overall structure of the data packet.
28H
Table 64 lists the values within a generic data packet that is
output by the ADV7183B in 8-bit format.
29H
DATA IDENTIFICATION
00
FF
FF
DID
230H
SECONDARY DATA IDENTIFICATION
SDID
DATA
COUNT
PREAMBLE FOR ANCILLARY DATA
OPTIONAL PADDING
BYTES
USER DATA
CHECK
SUM
04997-035
•
USER DATA (4 OR 8 WORDS)
Figure 35. Gemstar and CCAP Embedded Data Packet (Generic)
Table 64. Generic Data Output Packet
Byte
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
D[9]
0
1
1
0
!EP
!EP
!EP
!EP
!EP
!EP
!EP
!EP
!EP
!EP
!CS[8]
D[8]
0
1
1
1
EP
EP
EP
EP
EP
EP
EP
EP
EP
EP
CS[8]
D[7]
0
1
1
0
EF
0
0
0
0
0
0
0
0
0
CS[7]
D[6]
0
1
1
1
2X
0
0
0
0
0
0
0
0
0
CS[6]
D[5]
0
1
1
0
0
CS[5]
D[4]
0
1
1
0
D[3]
0
1
1
0
Line[3:0]
0
DC[1]
Word1[7:4]
Word1[3:0]
Word2[7:4]
Word2[3:0]
Word3[7:4]
Word3[3:0]
Word4[7:4]
Word4[3:0]
CS[4]
CS[3]
Rev. B | Page 51 of 100
D[2]
0
1
1
0
DC[0]
CS[2]
D[1]
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
D[0]
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
Description
Fixed preamble
Fixed preamble
Fixed preamble
DID
SDID
Data count (DC)
User data-words
User data-words
User data-words
User data-words
User data-words
User data-words
User data-words
User data-words
Checksum
ADV7183B
Table 65. Data Byte Allocation
Raw Information Bytes
Retrieved from the Video Line
4
4
2
2
2×
1
1
0
0
GDECAD
0
1
0
1
•
Gemstar Bit Names
•
DID. The data identification value is 0x140 (10-bit value).
Care has been taken that in 8-bit systems, the two LSBs do
not carry vital information.
•
EP and !EP. The EP bit is set to ensure even parity on the
data-word D[8:0]. Even parity means there will always be
an even number of 1s within the D[8:0] bit arrangement.
This includes the EP bit. !EP describes the logic inverse of
EP and is output on D[9]. The !EP is output to ensure that
the reserved codes of 00 and FF cannot happen.
•
EF. Even field identifier. EF = 1 indicates that the data was
recovered from a video line on an even field.
•
Padding Bytes
0
0
0
2
DC[1:0]
10
01
01
01
CS[8:2]. The checksum is provided to determine the
integrity of the ancillary data packet. It is calculated by
summing up D[8:2] of DID, SDID, the Data Count byte,
and all UDWs, and ignoring any overflow during the
summation. Since all data bytes that are used to calculate
the checksum have their two LSBs set to 0, the CS[1:0] bits
are also always 0.
!CS[8] describes the logic inversion of CS[8]. The value
!CS[8] is included in the checksum entry of the data packet
to ensure the reserved values of 0x00 and 0xFF do not
occur.
Table 66 to Table 71 outline the possible data packages.
234H
235H
Gemstar 2× Format, Half-Byte Output Mode
2X. This bit indicates whether the data sliced was in
Gemstar 1× or 2× format. A high indicates 2× format.
•
User Data-Words
(Including Padding)
8
4
4
4
Line[3:0]. This entry provides a code that is unique for
each of the possible 16 source lines of video from which
Gemstar data can be retrieved. Refer to Table 74 and
Table 75.
Half-byte output mode is selected by setting CDECAD = 0;
full-byte output mode is selected by setting CDECAD = 1.
See the GDECAD Gemstar Decode Ancillary Data Format,
Address 0x4C[0] section.
236H
231H
23H
•
DC[1:0]. Data count value. The number of user data-words
in the packet divided by 4. The number of user data-words
(UDW) in any packet must be an integral number of 4.
Padding is required at the end, if necessary, as set in
ITU-R BT.1364. See Table 65.
Gemstar 1× Format
Half-byte output mode is selected by setting CDECAD = 0;
full-byte output mode is selected by setting CDECAD = 1.
See the GDECAD Gemstar Decode Ancillary Data Format,
Address 0x4C[0] section.
23H
•
The 2X bit determines whether the raw information
retrieved from the video line was 2 or 4 bytes. The state of
the GDECAD bit affects whether the bytes are transmitted
straight (that is, two bytes transmitted as two bytes) or
whether they are split into nibbles (that is, two bytes
transmitted as four half bytes). Padding bytes are then
added where necessary.
Rev. B | Page 52 of 100
237H
ADV7183B
Table 66. Gemstar 2× Data, Half-Byte Mode
Byte
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
D[9]
0
1
1
0
!EP
!EP
!EP
!EP
!EP
!EP
!EP
!EP
!EP
!EP
!CS[8]
D[8]
0
1
1
1
EP
EP
EP
EP
EP
EP
EP
EP
EP
EP
CS[8]
D[7]
0
1
1
0
EF
0
0
0
0
0
0
0
0
0
CS[7]
D[6]
0
1
1
1
1
0
0
0
0
0
0
0
0
0
CS[6]
D[5]
0
1
1
0
0
CS[5]
D[4]
0
1
1
0
D[3]
0
1
1
0
Line[3:0]
0
1
Gemstar Word1[7:4]
Gemstar Word1[3:0]
Gemstar Word2[7:4]
Gemstar Word2[3:0]
Gemstar Word3[7:4]
Gemstar Word3[3:0]
Gemstar Word4[7:4]
Gemstar Word4[3:0]
CS[4]
CS[3]
D[2]
0
1
1
0
0
CS[2]
D[1]
0
1
1
0
0
0
0
0
0
0
0
0
0
0
CS[1]
D[0]
0
1
1
0
0
0
0
0
0
0
0
0
0
0
CS[0]
Description
Fixed preamble
Fixed preamble
Fixed preamble
DID
SDID
Data count
User data-words
User data-words
User data-words
User data-words
User data-words
User data-words
User data-words
User data-words
Checksum
Table 67. Gemstar 2× Data, Full-Byte Mode
Byte
0
1
2
3
4
5
6
7
8
9
10
D[9]
0
1
1
0
!EP
!EP
D[8]
0
1
1
1
EP
EP
D[7]
0
1
1
0
EF
0
!CS[8]
CS[8]
CS[7]
D[6]
D[5]
0
0
1
1
1
1
1
0
1
0
0
Gemstar Word1[7:0]
Gemstar Word2[7:0]
Gemstar Word3[7:0]
Gemstar Word4[7:0]
CS[6]
CS[5]
D[4]
D[3]
0
0
1
1
1
1
0
0
Line[3:0]
0
0
D[2]
0
1
1
0
CS[4]
CS[2]
CS[3]
1
D[1]
0
1
1
0
0
0
0
0
0
0
CS[1]
D[0]
0
1
1
0
0
0
0
0
0
0
CS[0]
Description
Fixed preamble
Fixed preamble
Fixed preamble
DID
SDID
Data count
User data-words
User data-words
User data-words
User data-words
Checksum
Table 68. Gemstar 1× Data, Half-Byte Mode
Byte
0
1
2
3
4
5
6
7
8
9
10
D[9]
0
1
1
0
!EP
!EP
!EP
!EP
!EP
!EP
!CS[8]
D[8]
0
1
1
1
EP
EP
EP
EP
EP
EP
CS[8]
D[7]
0
1
1
0
EF
0
0
0
0
0
CS[7]
D[6]
0
1
1
1
0
0
0
0
0
0
CS[6]
D[5]
0
1
1
0
0
CS[5]
D[4]
0
1
1
0
D[3]
0
1
1
0
Line[3:0]
0
0
Gemstar Word1[7:4]
Gemstar Word1[3:0]
Gemstar Word2[7:4]
Gemstar Word2[3:0]
CS[4]
CS[3]
Rev. B | Page 53 of 100
D[2]
0
1
1
0
1
CS[2]
D[1]
0
1
1
0
0
0
0
0
0
0
CS[1]
D[0]
0
1
1
0
0
0
0
0
0
0
CS[0]
Description
Fixed preamble
Fixed preamble
Fixed preamble
DID
SDID
Data count
User data-words
User data-words
User data-words
User data-words
Checksum
ADV7183B
Table 69. Gemstar 1× Data, Full-Byte Mode
Byte
0
1
2
3
4
5
6
7
8
9
10
D[9]
0
1
1
0
!EP
!EP
D[8]
0
1
1
1
EP
EP
D[7]
0
1
1
0
EF
0
1
1
!CS[8]
0
0
CS[8]
0
0
CS[7]
D[6]
D[5]
0
0
1
1
1
1
1
0
0
0
0
Gemstar Word1[7:0]
Gemstar Word2[7:0]
0
0
0
0
CS[6]
CS[5]
D[4]
0
1
1
0
0
D[3]
0
1
1
0
Line[3:0]
0
0
0
CS[4]
0
0
CS[3]
D[2]
0
1
1
0
1
0
0
CS[2]
D[1]
0
1
1
0
0
0
0
0
0
0
CS[1]
D[0]
0
1
1
0
0
0
0
0
0
0
CS[0]
Description
Fixed preamble
Fixed preamble
Fixed preamble
DID
SDID
Data count
User data-words
User data-words
UDW padding 0x200
UDW padding 0x200
Checksum
Table 70. NTSC CCAP Data, Half-Byte Mode
Byte
0
1
2
3
4
5
6
7
8
9
10
D[9]
0
1
1
0
!EP
!EP
!EP
!EP
!EP
!EP
!CS[8]
D[8]
0
1
1
1
EP
EP
EP
EP
EP
EP
CS[8]
D[7]
0
1
1
0
EF
0
0
0
0
0
CS[7]
D[6]
0
1
1
1
0
0
0
0
0
0
CS[6]
D[5]
0
1
1
0
1
0
CS[5]
D[4]
D[3]
0
0
1
1
1
1
0
0
0
1
0
0
CCAP Word1[7:4]
CCAP Word1[3:0]
CCAP Word2[7:4]
CCAP Word2[3:0]
CS[4]
CS[3]
D[2]
0
1
1
0
1
1
CS[2]
D[1]
0
1
1
0
0
0
0
0
0
0
CS[1]
D[0]
0
1
1
0
0
0
0
0
0
0
CS[0]
Description
Fixed preamble
Fixed preamble
Fixed preamble
DID
SDID
Data count
User data-words
User data-words
User data-words
User data-words
Checksum
Table 71. NTSC CCAP Data, Full-Byte Mode
Byte
0
1
2
3
4
5
6
7
8
9
10
D[9]
0
1
1
0
!EP
!EP
D[8]
0
1
1
1
EP
EP
D[7]
0
1
1
0
EF
0
1
1
!CS[8]
0
0
CS[8]
0
0
CS[7]
D[6]
D[5]
0
0
1
1
1
1
1
0
0
1
0
0
CCAP Word1[7:0]
CCAP Word2[7:0]
0
0
0
0
CS[6]
CS[5]
D[4]
0
1
1
0
0
0
D[3]
0
1
1
0
1
0
D[2]
0
1
1
0
1
1
0
0
CS[4]
0
0
CS[3]
0
0
CS[2]
Rev. B | Page 54 of 100
D[1]
0
1
1
0
0
0
0
0
0
0
CS[1]
D[0]
0
1
1
0
0
0
0
0
0
0
CS[0]
Description
Fixed preamble
Fixed preamble
Fixed preamble
DID
SDID
Data count
User data-words
User data-words
UDW padding 0x200
UDW padding 0x200
Checksum
ADV7183B
NTSC CCAP Data
PAL CCAP Data
Half-byte output mode is selected by setting CDECAD = 0;
the full-byte mode is enabled by CDECAD = 1. See the
GDECAD Gemstar Decode Ancillary Data Format,
Address 0x4C[0] section. The data packet formats are
shown in Table 72 and Table 73.
Half-byte output mode is selected by setting CDECAD = 0;
full-byte output mode is selected by setting CDECAD = 1.
See the GDECAD Gemstar Decode Ancillary Data Format,
Address 0x4C[0] section.
238H
239H
24H
243H
240H
Table 72 and Table 73 list the bytes of the data packet.
24H
Only closed caption data can be embedded in the output
data stream.
Only closed caption data can be embedded in the output data
stream. PAL closed caption data is sliced from Line 22 and
Line 335. The corresponding enable bits have to be set.
NTSC closed caption data is sliced on Line 21d on even and
odd fields. The corresponding enable bit has to be set high.
See the and the GDECOL[15:0] Gemstar Decoding Odd Lines,
Address 0x4A[7:0]; Address 0x4B[7:0] sections.
See the GDECAD Gemstar Decode Ancillary Data Format,
Address 0x4C[0] and GDECOL[15:0] Gemstar Decoding Odd
Lines, Address 0x4A[7:0]; Address 0x4B[7:0] sections.
245H
241H
Table 72. PAL CCAP Data, Half-Byte Mode
Byte
0
1
2
3
4
5
6
7
8
9
10
D[9]
0
1
1
0
!EP
!EP
!EP
!EP
!EP
!EP
!CS[8]
D[8]
0
1
1
1
EP
EP
EP
EP
EP
EP
CS[8]
D[7]
0
1
1
0
EF
0
0
0
0
0
CS[7]
D[6]
0
1
1
1
0
0
0
0
0
0
CS[6]
D[5]
0
1
1
0
1
0
CS[5]
D[4]
D[3]
0
0
1
1
1
1
0
0
0
1
0
0
CCAP Word1[7:4]
CCAP Word1[3:0]
CCAP Word2[7:4]
CCAP Word2[3:0]
CS[4]
CS[3]
D[2]
0
1
1
0
0
1
CS[2]
D[1]
0
1
1
0
0
0
0
0
0
0
CS[1]
D[0]
0
1
1
0
0
0
0
0
0
0
CS[0]
Description
Fixed preamble
Fixed preamble
Fixed preamble
DID
SDID
Data count
User data-words
User data-words
User data-words
User data-words
Checksum
Table 73. PAL CCAP Data, Full-Byte Mode
Byte
0
1
2
3
4
5
6
7
8
9
10
D[9]
0
1
1
0
!EP
!EP
D[8]
0
1
1
1
EP
EP
D[7]
0
1
1
0
EF
0
1
1
!CS[8]
0
0
CS[8]
0
0
CS[7]
D[6]
D[5]
0
0
1
1
1
1
1
0
0
1
0
0
CCAP Word1[7:0]
CCAP Word2[7:0]
0
0
0
0
CS[6]
CS[5]
D[4]
0
1
1
0
0
0
D[3]
0
1
1
0
1
0
D[2]
0
1
1
0
0
1
0
0
CS[4]
0
0
CS[3]
0
0
CS[2]
Rev. B | Page 55 of 100
D[1]
0
1
1
0
0
0
0
0
0
0
CS[1]
D[0]
0
1
1
0
0
0
0
0
0
0
CS[0]
Description
Fixed preamble
Fixed preamble
Fixed preamble
DID
SDID
Data count
User data-words
User data-words
UDW padding 0x200
UDW padding 0x200
Checksum
ADV7183B
Table 74. NTSC Line Enable Bits and
Corresponding Line Numbering
GDECEL[15:0] Gemstar Decoding Even Lines,
Address 0x48[7:0]; Address 0x49[7:0]
The 16 bits of the GDECEL[15:0] are interpreted as a collection
of 16 individual line decode enable signals. Each bit refers to a
line of video in an even field. Setting the bit enables the decoder
block trying to find Gemstar or closed caption-compatible data
on that particular line. Setting the bit to 0 prevents the decoder
from trying to retrieve data. See Table 74 and Table 75.
246H
247H
To retrieve closed caption data services on NTSC (Line 284),
GDECEL[11] must be set.
To retrieve closed caption data services on PAL (Line 335),
GDECEL[14] must be set.
The default value of GDECEL[15:0] is 0x0000. This setting
instructs the decoder not to attempt to decode Gemstar or
CCAP data from any line in the even field.
GDECOL[15:0] Gemstar Decoding Odd Lines,
Address 0x4A[7:0]; Address 0x4B[7:0]
The 16 bits of the GDECOL[15:0] form a collection of 16
individual line decode enable signals. See Table 74 and Table 75.
248H
249H
To retrieve closed caption data services on NTSC (Line 21),
GDECOL[11] must be set.
To retrieve closed caption data services on PAL (Line 22),
GDECOL[14] must be set.
The default value of GDECOL[15:0] is 0x0000. This setting
instructs the decoder not to attempt to decode Gemstar or
CCAP data from any line in the odd field.
GDECAD Gemstar Decode Ancillary Data Format,
Address 0x4C[0]
The decoded data from Gemstar-compatible transmissions or
closed caption is inserted into the horizontal blanking period of
the respective line of video. There is a potential problem if the
retrieved data bytes have the value 0x00 or 0xFF. In an
ITU-R BT.656-compatible data stream, those values are
reserved and used only to form a fixed preamble.
Line[3:0]
0
1
2
3
4
5
6
7
8
9
10
11
Line Number
(ITU-R BT.470)
10
11
12
13
14
15
16
17
18
19
20
21
Enable Bit
GDECOL[0]
GDECOL[1]
GDECOL[2]
GDECOL[3]
GDECOL[4]
GDECOL[5]
GDECOL[6]
GDECOL[7]
GDECOL[8]
GDECOL[9]
GDECOL[10]
GDECOL[11]
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
22
23
24
25
273 (10)
274 (11)
275 (12)
276 (13)
277 (14)
278 (15)
279 (16)
280 (17)
281 (18)
282 (19)
283 (20)
284 (21)
GDECOL[12]
GDECOL[13]
GDECOL[14]
GDECOL[15]
GDECEL[0]
GDECEL[1]
GDECEL[2]
GDECEL[3]
GDECEL[4]
GDECEL[5]
GDECEL[6]
GDECEL[7]
GDECEL[8]
GDECEL[9]
GDECEL[10]
GDECEL[11]
12
13
14
15
285 (22)
286 (23)
287 (24)
288 (25)
GDECEL[12]
GDECEL[13]
GDECEL[14]
GDECEL[15]
The GDECAD bit allows the data to be inserted into the
horizontal blanking period in two ways:
•
Insert all data straight into the data stream, even the
reserved values of 0x00 and 0xFF, if they occur. This can
violate the output data format specification ITU-R BT.1364.
•
Split all data into nibbles and insert the half-bytes over
double the number of cycles in a 4-bit format.
When GDECAD is 0, the data is split into half-bytes and
inserted (default).
When GDECAD is 1, the data is output straight in 8-bit format.
Rev. B | Page 56 of 100
Comment
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar or
closed caption
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar
Gemstar or
closed caption
Gemstar
Gemstar
Gemstar
Gemstar
ADV7183B
6
Table 75. PAL Line Enable Bits and Corresponding Line
Numbering
•
Bypass mode (default)
•
NTSC—consists of three filter characteristics
•
PAL—consists of three filter characteristics
–4
–6
–8
–12
2.0
2.5
3.0
3.5
4.0
4.5
5.0
FREQUENCY (MHz)
04997-036
–10
Figure 36. NTSC IF Compensation Filter Responses
6
4
2
0
–2
–4
–6
–8
3.0
3.5
4.0
4.5
5.0
5.5
6.0
FREQUENCY (MHz)
Figure 37. PAL IF Compensation Filter Responses
See Table 86 for programming details.
25H
I2C Interrupt System
P
P
The ADV7183B has a comprehensive interrupt register set. This
map is located in Register Access Page 2. See Table 84 for details
of the interrupt register map.
253H
COMMON I2C SPACE
ADDRESS 0x00 ≥ 0x3F
ADDRESS 0x0E BIT 6, 5 = 00b
ADDRESS 0x0E BIT 6, 5 = 01b
I2C SPACE
REGISTER ACCESS PAGE 1
ADDRESS 0x40 ≥ 0xFF
I2C SPACE
REGISTER ACCESS PAGE 2
ADDRESS 0x40 ≥ 0x4C
NORMAL REGISTER SPACE
INTERRUPT REGISTER SPACE
Figure 38. Register Access —Page 1 and Page 2
Rev. B | Page 57 of 100
04997-038
The options for this feature are as follows:
–2
254H
The IF FILTSEL[2:0] register allows the user to compensate for
SAW filter characteristics on a composite input as observed on
tuner outputs. Figure 36 and Figure 37 show IF filter
compensation for NTSC and PAL.
251H
0
How to access this map is described in Figure 38.
IF Compensation Filter
IF FILTSEL[2:0] IF Filter Select Address 0xF8[2:0]
250H
2
04997-037
Comment
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Closed caption
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Not valid
Closed caption
Not valid
AMPLITUDE (dB)
Enable Bit
GDECOL[0]
GDECOL[1]
GDECOL[2]
GDECOL[3]
GDECOL[4]
GDECOL[5]
GDECOL[6]
GDECOL[7]
GDECOL[8]
GDECOL[9]
GDECOL[10]
GDECOL[11]
GDECOL[12]
GDECOL[13]
GDECOL[14]
GDECOL[15]
GDECEL[0]
GDECEL[1]
GDECEL[2]
GDECEL[3]
GDECEL[4]
GDECEL[5]
GDECEL[6]
GDECEL[7]
GDECEL[8]
GDECEL[9]
GDECEL[10]
GDECEL[11]
GDECEL[12]
GDECEL[13]
GDECEL[14]
GDECEL[15]
4
AMPLITUDE (dB)
Line[3:0]
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
10
11
Line Number
(ITU-R BT.470)
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
321 (8)
322 (9)
323 (10)
324 (11)
325 (12)
326 (13)
327 (14)
328 (15)
329 (16)
330 (17)
331 (18)
332 (19)
333 (20)
334 (21)
335 (22)
336 (23)
ADV7183B
Interrupt Request Output Operation
INTRQ_OP_SEL[1:0], Interrupt Duration Select
Address 0x40 (Interrupt Space)[1:0]
When an interrupt event occurs, the interrupt pin INTRQ
goes low with a programmable duration given by
INTRQ_DUR_SEL[1:0]
Table 77. INTRQ_OP_SEL
INTRQ_OP_SEL[1:0]
00 (default)
01
10
11
INTRQ_DURSEL[1:0], Interrupt Duration Select
Address 0x40 (Interrupt Space)[7:6]
Table 76. INTRQ_DUR_SEL
INTRQ_DURSEL[1:0]
00 (default)
01
10
11
Description
3 Xtal periods
15 Xtal periods
63 Xtal periods
Active until cleared
Description
Open drain
Drive low when active
Drive high when active
Reserved
Multiple Interrupt Events
When the active until cleared interrupt duration is selected and
the event that caused the interrupt is no longer in force, the
interrupt persists until it is masked or cleared.
For example, if the ADV7183B loses lock, an interrupt is
generated and INTRQ pin goes low. If the ADV7183B returns
to the locked state, INTRQ continues to drive low until the
SD_LOCK bit is either masked or cleared.
If Interrupt Event 1 occurs and then Interrupt Event 2 occurs
before the system controller has cleared or masked Interrupt
Event 1, the ADV7183B will not generate a second interrupt
signal. The system controller should check all unmasked
interrupt status bits, as more than one can be active.
Macrovision Interrupt Selection Bits
The user can select between pseudo sync pulse and color stripe
detection as shown in this section.
MV_INTRQ_SEL[1:0], Macrovision Interrupt Selection
Bits Address 0x40 (Interrupt Space)[5:4]
Table 78. MV_INTRQ_SEL
Interrupt Drive Level
The ADV7183B resets with open drain enabled and all
interrupts masked off. Therefore, INTRQ is in a high
impedance state after reset. 01 or 10 has to be written to
INTRQ_OP_SEL[1:0] for a logic level to be driven out from the
INTRQ pin.
It is also possible to write to a register in the ADV7183B that
manually asserts the INTRQ pin. This bit is MPU_STIM_INTRQ.
MV_INTRQ_SEL[1:0]
00
01 (default)
10
11
Description
Reserved
Pseudo sync only
Color stripe only
Either pseudo sync or color stripe
Additional information relating to the interrupt system is
detailed in Table 84.
Rev. B | Page 58 of 100
25H
ADV7183B
PIXEL PORT CONFIGURATION
The ADV7183B has a very flexible pixel port that can be configured in a variety of formats to accommodate downstream ICs.
Table 79 and Table 80 summarize the various functions that the
ADV7183B’s pins can have in different modes of operation.
SWPC Swap Pixel Cr/Cb, Address 0x27[7]
The ordering of components (for example, Cr versus Cb,
CHA/B/C) can be changed. Refer to the section. Table 79
indicates the default positions for the Cr/Cb components.
When SWPC is 1, the Cr and Cb values can be swapped.
256H
This bit allows Cr and Cb samples to be swapped.
257H
258H
When SWPC is 0 (default), no swapping is allowed.
PAD_SEL[2:0], Address 0x8F[6:4]
OF_SEL[3:0] Output Format Selection, Address 0x03[5:2]
The modes in which the ADV7183B pixel port can be onfigured
are under the control of OF_SEL[3:0]. See Table 80 for details.
259H
This I2C write allows the user to select between the LLC1
(nominally at 27 MHz) and LLC2 (nominally at 13.5 MHz).
The LLC2 signal is useful for LLC2-compatible wide bus
(16-bit) output modes. See the OF_SEL[3:0] Output Format
Selection, Address 0x03[5:2] section for additional information.
The LLC2 signal and data on the data bus are synchronized. By
default, the rising edge of LLC1/LLC2 is aligned with the Y
data; the falling edge occurs when the data bus holds C data.
The polarity of the clock, and therefore the Y/C assignments to
the clock edges, can be altered by using the Polarity LLC pin.
261H
The default LLC frequency output on the LLC1 pin is
approximately 27 MHz. For modes that operate with a nominal
data rate of 13.5 MHz (0001, 0010), the clock frequency on the
LLC1 pin stays at the higher rate of 27 MHz. For information
on outputting the nominal 13.5 MHz clock on the LLC1 pin, see
the PAD_SEL[2:0], Address 0x8F[6:4] section.
260H
When LLC_PAD_SEL[2:0] is 000 (default), the output is
nominally 27 MHz LLC on the LLC1 pin.
When LLC_PAD_SEL[2:0] is 101, the output is nominally
13.5 MHz LLC on the LLC1 pin.
Table 79. P15 to P0 Output/Input Pin Mapping
Format, and Mode
Video Out, 8-Bit, 4:2:2
Video Out, 16-Bit, 4:2:2
15
14
13
12
11
YCrCb[7:0] OUT
Y[7:0] OUT
Data Port Pins P[15:0]
10
9
8
7
6
5
4
3
2
CrCb[7:0] OUT
Table 80. Standard Definition Pixel Port Modes
P[15: 0]
OF_SEL[3:0]
0010
0011 (default)
0110-1111
Format
16-bit @ LLC2 4:2:2
8-bit @ LLC1 4:2:2 (default)
Reserved
P[15:8]
Y[7:0]
YCrCb[7:0] (default)
Rev. B | Page 59 of 100
P[7: 0]
CrCb[7:0]
Three-state
Reserved. Do not use.
1
0
ADV7183B
MPU PORT DESCRIPTION
The ADV7183B supports a 2-wire (I2C-compatible) serial interface. Two inputs, serial data (SDA) and serial clock (SCLK),
carry information between the ADV7183B and the system I2C
master controller. Each slave device is recognized by a unique
address. The ADV7183B’s I2C port allows the user to set up and
configure the decoder and to read back captured VBI data. The
ADV7183B has two possible slave addresses for both read and
write operations, depending on the logic level on the ALSB pin.
These four unique addresses are shown in Table 81. The
ADV7183B’s ALSB pin controls Bit 1 of the slave address. By
altering the ALSB, it is possible to control two ADV7183Bs in
an application without having a conflict with the same slave
address. The LSB (Bit 0) sets either a read or write operation.
Logic 1 corresponds to a read operation; Logic 0 corresponds to
a write operation.
Table 81. I2C Address for the ADV7183B
address. The R/W bit determines the direction of the data.
Logic 0 on the LSB of the first byte means the master writes
information to the peripheral. Logic 1 on the LSB of the first
byte means the master reads information from the peripheral.
The ADV7183B acts as a standard slave device on the bus. The
data on the SDA pin is eight bits long, supporting the 7-bit
addresses and the R/W bit. The ADV7183B has 249 subaddresses to enable access to the internal registers. It therefore
interprets the first byte as the device address and the second
byte as the starting subaddress. The subaddresses auto-increment,
which allows data to be written to or read from the starting subaddress. A data transfer is always terminated by a stop condition.
The user can also access any unique subaddress register on a
one-by-one basis without updating all the registers.
26H
R/W
0
1
0
1
Stop and start conditions can be detected at any stage during the
data transfer. If these conditions are asserted out of sequence with
normal read and write operations, they cause an immediate
jump to the idle condition. During a given SCLK high period,
the user should only issue one start condition, one stop condition,
or a single stop condition followed by a single start condition. If
an invalid subaddress is issued by the user, the ADV7183B does
not issue an acknowledge and returns to the idle condition.
Slave Address
0x40
0x41
0x42
0x43
To control the device on the bus, a specific protocol must be
followed. First, the master initiates a data transfer by
establishing a start condition, which is defined by a high-to-low
transition on SDA while SCLK remains high. This indicates that
an address/data stream will follow. All peripherals respond to
the start condition and shift the next eight bits (7-bit address +
R/W bit). The bits are transferred from MSB down to LSB. The
peripheral that recognizes the transmitted address responds by
pulling the data line low during the ninth clock pulse; this is
known as an acknowledge bit. All other devices withdraw from
the bus at this point and maintain an idle condition. The idle
condition is where the device monitors the SDA and SCLK lines,
waiting for the start condition and the correct transmitted
If the user exceeds the highest subaddress in auto-increment
mode, the following occurs:
•
In read mode, the highest subaddress register contents
continue to be output until the master device issues a
no-acknowledge. This indicates the end of a read. A no
acknowledge condition is where the SDA line is not pulled
low on the ninth pulse.
•
In write mode, the data for the invalid byte is not loaded
into any subaddress register, a no acknowledge is issued by
the ADV7183B, and the part returns to the idle condition.
SDATA
SCLOCK
S
1–7
8
9
1–7
8
9
START ADDR R/W ACK SUBADDRESS ACK
1–7
DATA
8
9
P
ACK
STOP
04997-039
Figure 39. Bus Data Transfer
WRITE
SEQUENCE
S SLAVE ADDR A(S)
SUB ADDR
A(S)
DATA
LSB = 0
READ
SEQUENCE
S SLAVE ADDR A(S)
S = START BIT
P = STOP BIT
DATA
A(S)
A(S) P
LSB = 1
SUB ADDR
A(S) S
SLAVE ADDR A(S)
A(S) = ACKNOWLEDGE BY SLAVE
A(M) = ACKNOWLEDGE BY MASTER
DATA
A(M)
A(S) = NO-ACKNOWLEDGE BY SLAVE
A(M) = NO-ACKNOWLEDGE BY MASTER
Figure 40. Read and Write Sequence
Rev. B | Page 60 of 100
DATA
A(M) P
04997-040
ALSB
0
0
1
1
ADV7183B
REGISTER ACCESSES
I2C SEQUENCER
The MPU can write to or read from most of the ADV7183B’s
registers, except the registers that are read only or write only.
The subaddress register determines which register the next read
or write operation accesses. All communications with the part
through the bus start with an access to the subaddress register.
Next, a read/write operation is performed from/to the target
address, which then increments to the next address until a stop
command on the bus is performed.
An I2C sequencer is used when a parameter exceeds eight bits
and is, therefore, distributed over two or more I2C registers,
such as HSB[11:0].
REGISTER PROGRAMMING
When such a parameter is changed using two or more I2C write
operations, the parameter can hold an invalid value for the time
between the first I2C completion and the last I2C completion.
This means, the top bits of the parameter can already hold the
new value while the remaining bits of the parameter still hold
the previous value.
This section describes the configuration of each register. The
communications register is an 8-bit, write only register. After
the part has been accessed over the bus and a read/write
operation is selected, the subaddress is set up. The subaddress
register determines to/from which register the operation takes
place. Table 82 lists the various operations under the control of
the subaddress register for the control port.
To avoid this problem, the I2C sequencer holds the already
updated bits of the parameter in local memory; all bits of the
parameter are updated together once the last register write
operation has completed.
Register Select (SR7 to SR0)
•
All I2C registers for the target parameter must be written to
in order of ascending addresses. For example, for
HSB[10:0], write to Address 0x34 first, followed by 0x35.
•
No other I2C can take place between the two (or more) I2C
writes for the sequence. For example, for HSB[10:0], write
to Address 0x34 first, immediately followed by 0x35.
263H
The correct operation of the I2C sequencer relies on the
following:
These bits are set up to point to the required starting address.
Rev. B | Page 61 of 100
ADV7183B
IP2PC REGISTER MAPS
Table 82. Common and Normal (Page 1) Register Map Details
Register Name
Input Control
Video Selection
Reserved
Output Control
Extended Output Control
Reserved
Reserved
Autodetect Enable
Contrast
Reserved
Brightness
Hue
Default Value Y
Default Value C
ADI Control
Power Management
Status 1
Ident
Status 2
Status 3
Analog Clamp Control
Digital Clamp Control 1
Reserved
Shaping Filter Control
Shaping Filter Control 2
Comb Filter Control
Reserved
ADI Control 2
Reserved
Pixel Delay Control
Reserved
Misc Gain Control
AGC Mode Control
Chroma Gain Control 1
Chroma Gain Control 2
Luma Gain Control 1
Luma Gain Control 2
Vsync Field Control 1
Vsync Field Control 2
Vsync Field Control 3
Hsync Position Control 1
Hsync Position Control 2
Hsync Position Control 3
Polarity
NTSC Comb Control
PAL Comb Control
ADC Control
Reserved
Manual Window Control
Reset Value
0000 0000
1100 1000
0000 0100
0000 1100
01xx 0101
0000 0000
0000 0010
0111 1111
1000 0000
1000 0000
0000 0000
0000 0000
0011 0110
0111 1100
0000 0000
0000 0000
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
0001 0010
0100 xxxx
xxxx xxxx
0000 0001
1001 0011
1111 0001
xxxx xxxx
0000 0xxx
xxxx xxxx
0101 1000
xxxx xxxx
1110 0001
1010 1110
1111 0100
0000 0000
1111 xxxx
xxxx xxxx
0001 0010
0100 0001
1000 0100
0000 0000
0000 0010
0000 0000
0000 0001
1000 0000
1100 0000
0001 0000
xxxx xxxx
0100 0011
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
r
r
r
r
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
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Rev. B | Page 62 of 100
Dec
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26 to 28
29
30 to 38
39
40 to 42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59 to 60
61
Subaddress
Hex
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
0x1A to 0x1C
0x1D
0x1E to 0x26
0x27
0x28 to 0x2A
0x2B
0x2C
0x2D
0x2E
0x2F
0x30
0x31
0x32
0x33
0x34
0x35
0x36
0x37
0x38
0x39
0x3A
0x3B to 0x3C
0x3D
ADV7183B
Register Name
Reserved
Resample Control
Reserved
Gemstar Ctrl 1
Gemstar Ctrl 2
Gemstar Ctrl 3
Gemstar Ctrl 4
GemStar Ctrl 5
CTI DNR Ctrl 1
CTI DNR Ctrl 2
Reserved
CTI DNR Ctrl 4
Lock Count
Reserved
Free-Run Line Length 1
Reserved
VBI Info
WSS 1
WSS 2
EDTV 1
EDTV 2
EDTV 3
CGMS 1
CGMS 2
CGMS 3
CCAP1
CCAP2
Letterbox 1
Letterbox 2
Letterbox 3
Reserved
CRC Enable
Reserved
ADC Switch 1
ADC Switch 2
Reserved
Letterbox Control 1
Letterbox Control 2
Reserved
Reserved
Reserved
SD Offset Cb
SD Offset Cr
SD Saturation Cb
SD Saturation Cr
NTSC V Bit Begin
NTSC V Bit End
NTSC F Bit Toggle
PAL V Bit Begin
PAL V Bit End
PAL F Bit Toggle
Reserved
Reset Value
xxxx xxxx
0100 0001
xxxx xxxx
00000000
0000 0000
0000 0000
0000 0000
xxxx xxx0
1110 1111
0000 1000
xxxx xxxx
0000 1000
0010 0100
xxxx xxxx
0000 0000
0000 0000
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
0001 1100
xxxx xxxx
xxxx xxxx
0xxx xxxx
xxxx xxxx
1010 1100
0100 1100
0000 0000
0000 0000
0001 0100
1000 0000
1000 0000
1000 0000
1000 0000
0010 0101
0000 0100
0110 0011
0110 0101
0001 0100
0110 0011
xxxx xxxx
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
w
w
r
r
r
r
r
r
r
r
r
r
r
r
r
r
rw
w
rw
rw
rw
rw
rw
rw
rw
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Rev. B | Page 63 of 100
Dec
62 to 64
65
66 to 71
72
73
74
75
76
77
78
79
80
81
82 to 142
143
144
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158 to 177
178
179 to 194
195
196
197 to 219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235 to 243
Subaddress
Hex
0x3E to 0x40
0x41
0x42 to 0x47
0x48
0x49
0x4A
0x4B
0x4C
0x4D
0x4E
0x4F
0x50
0x51
0x52 to 0x8E
0x8F
0x90
0x90
0x91
0x92
0x93
0x94
0x95
0x96
0x97
0x98
0x99
0x9A
0x9B
0x9C
0x9D
0x9E to 0xB1
0xB2
0xB2 to 0xC2
0xC3
0xC4
0xC5 to 0xDB
0xDC
0xDD
0xDE
0xDF
0xE0
0xE1
0xE2
0xE3
0xE4
0xE5
0xE6
0xE7
0xE8
0xE9
0xEA
0xEB to 0xF3
ADV7183B
Register Name
Drive Strength
Reserved
IF Comp Control
VS Mode Control
Reset Value
xx01 0101
xxxx xxxx
0000 0000
0000 0000
rw
rw
rw
rw
rw
Subaddress
Hex
0xF4
0xF5 to 0xF7
0xF8
0xF9
Dec
244
245 to 247
248
249
Table 83. Common and Normal (Page 1) Register Map Bit Names
Register Name
Input Control
Video Selection
Reserved
Output Control
Extended Output Control
Reserved
Reserved
Autodetect Enable
Contrast
Reserved
Brightness
Hue
Default Value Y
Default Value C
ADI Control
Power Management
Status 1
Ident
Status 2
Status 3
Analog Clamp Control
Digital Clamp Control 1
Reserved
Shaping Filter Control
Shaping Filter Control 2
Comb Filter Control
Reserved
ADI Control 2
Reserved
Pixel Delay Control
Reserved
Misc Gain Control
AGC Mode Control
Chroma Gain Control 1
Chroma Gain Control 2
Luma Gain Control 1
Luma Gain Control 2
Vsync Field Control 1
Vsync Field Control 2
Vsync Field Control 3
Hsync Position Control 1
Hsync Position Control 2
Hsync Position Control 3
Polarity
NTSC Comb Control
PAL Comb Control
ADC Control
Reserved
Manual Window Control
Bit 7
VID_SEL.3
Bit 6
VID_SEL.2
ENHSPLL
Bit 5
VID_SEL.1
BETACAM
Bit 4
VID_SEL.0
Bit 3
INSEL.3
ENVSPROC
Bit 2
INSEL.2
Bit 1
INSEL.1
Bit 0
INSEL.0
VBI_EN
BT656-4
TOD
OF_SEL.3
OF_SEL.2
OF_SEL.1
TIM_OE
OF_SEL.0
BL_C_VBI
EN_SFL_PI
SD_DUP_AV
RANGE
AD_SEC525_EN
AD_SECAM_EN
CON.7
CON.6
AD_N443_EN
CON.5
AD_P60_EN
CON.4
AD_PALN_EN
CON.3
AD_PALM_EN
CON.2
AD_NTSC_EN
CON.1
AD_PAL_EN
CON.0
BRI.7
HUE.7
DEF_Y.5
BRI.6
HUE.6
DEF_Y.4
BRI.5
HUE.5
DEF_Y.3
BRI.4
HUE.4
DEF_Y.2
BRI.3
HUE.3
DEF_Y.1
BRI.2
HUE.2
DEF_Y.0
BRI.0
HUE.0
DEF_VAL_EN
DEF_C.7
DEF_C.6
DEF_C.5
DEF_C.4
DEF_C.3
DEF_C.2
BRI.1
HUE.1
DEF_VAL_
AUTO_EN
DEF_C.1
DEF_C.0
FOLLOW_PW
IDENT.3
MV AGC DET
PDBP
FSC_LOCK
IDENT.2
MV PS DET
SD_OP_50HZ
LOST_LOCK
IDENT.1
MVCS T3
GEMD
IN_LOCK
IDENT.0
MVCS DET
INST_HLOCK
YSFM.4
WYSFM.4
YSFM.3
WYSFM.3
NSFSEL.1
YSFM.2
WYSFM.2
NSFSEL.0
YSFM.1
WYSFM.1
PSFSEL.1
YSFM.0
WYSFM.0
PSFSEL.0
CTA.0
LTA.1
LTA.0
CMG.10
CMG.2
LMG.10
LMG.2
CAGC.1
CMG.9
CMG.1
LMG.9
LMG.1
PW_UPD
CAGC.0
CMG.8
CMG.0
LMG.8
LMG.0
HSE.10
HSB.2
HSE.2
HSE.9
HSB.1
HSE.1
YCMN.2
YCMP.2
YCMN.1
YCMP.1
PWRDN_AD C_
1
PWRDN_ADC_2
SUB_USR_EN.0
RES
COL_KILL
IDENT.7
AD_RESULT.2
IDENT.6
PAL SW LOCK
INTERLACE
PWRDN
AD_RESULT.1
IDENT.5
FSC NSTD
STD FLD LEN
DCT.1
DCT.0
CSFM.2
WYSFMOVR
CSFM.1
CSFM.0
TRI_LLC
EN28XTAL
VS_JIT_
COMP_EN
SWPC
AUTO_PDC_EN
CTA.2
CTA.1
LAGC.1
LAGC.0
CAGT.1
CMG.7
LAGT.1
LMG.7
CKE
LAGC.2
CAGT.0
CMG.6
LGAT.0
LMG.6
CMG.5
CMG.4
LMG.5
LMG.4
NEWAVMODE
HSB.9
HSB.5
HSE.5
PVS
CCMN.2
CCMP.2
HSB.8
HSB.4
HSE.4
AD_RESULT.0
IDENT.4
LL NSTD
FREE_RUN_ACT
CCLEN
VSBHO
VSEHO
HSB.7
HSE.7
PHS
CTAPSN.1
CTAPSP.1
VSBHE
VSEHE
HSB.10
HSB.6
HSE.6
CTAPSN.0
CTAPSP.0
CCMN.1
CCMP.1
CMG.11
CMG.3
LMG.11
LMG.3
HVSTIM
HSB.3
HSE.3
PF
CCMN.0
CCMP.0
PWRDN_AD C_0
CKILLTHR.2
CKILLTHR.1
CKILLTHR.0
Rev. B | Page 64 of 100
HSE.8
HSB.0
HSE.0
PCLK
YCMN.0
YCMP.0
ADV7183B
Register Name
Reserved
Resample Control
Reserved
Gemstar Ctrl 1
Gemstar Ctrl 2
Gemstar Ctrl 3
Gemstar Ctrl 4
Gemstar Ctrl 5
CTI DNR Ctrl 1
CTI DNR Ctrl 2
Reserved
CTI DNR Ctrl 4
Lock Count
Reserved
Free-run Line Length 1
Reserved
VBI Info
WSS 1
WSS 2
EDTV 1
EDTV 2
EDTV 3
CGMS 1
CGMS 2
CGMS 3
CCAP1
CCAP2
Letterbox 1
Letterbox 2
Letterbox 3
Reserved
CRC Enable
Reserved
ADC Switch 1
ADC Switch 2
Reserved
Letterbox Control 1
Letterbox Control 2
Reserved
Reserved
Reserved
SD Offset Cb
SD Offset Cr
SD Saturation Cb
SD Saturation Cr
NTSC V Bit Begin
NTSC V Bit End
NTSC F Bit Toggle
PAL V Bit Begin
PAL V Bit End
PAL F Bit Toggle
Reserved
Drive Strength
Reserved
IF Comp Control
VS Mode Control
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
SFL_INV
GDECEL.15
GDECEL.7
GDECOL.15
GDECOL.7
GDECEL.14
GDECEL.6
GDECOL.14
GDECOL.6
GDECEL.13
GDECEL.5
GDECOL.13
GDECOL.5
GDECEL.12
GDECEL.4
GDECOL.12
GDECOL.4
GDECEL.11
GDECEL.3
GDECOL.11
GDECOL.3
GDECEL.10
GDECEL.2
GDECOL.10
GDECOL.2
GDECEL.9
GDECEL.1
GDECOL.9
GDECOL.1
CTI_C_TH.7
CTI_C_TH.6
DNR_EN
CTI_C_TH.5
CTI_C_TH.4
CTI_AB.1
CTI_C_TH.3
CTI_AB.0
CTI_C_TH.2
CTI_AB_EN
CTI_C_TH.1
GDECEL.8
GDECEL.0
GDECOL.8
GDECOL.0
GDECAD
CTI_EN
CTI_C_TH.0
DNR_TH.7
FSCLE
DNR_TH.6
SRLS
DNR_TH.5
COL.2
DNR_TH.4
COL.1
DNR_TH.3
COL.0
DNR_TH.2
CIL.2
DNR_TH.1
CIL.1
DNR_TH.0
CIL.0
LLC_PAD_SEL.2
LLC_PAD_SEL.1
LLC_PAD_SEL.0
WSS1.6
WSS2.6
EDTV1.6
EDTV2.6
EDTV3.6
CGMS1.6
CGMS2.6
CGMS3.6
CCAP1.6
CCAP2.6
LB_LCT.6
LB_LCM.6
LB_LCB.6
WSS1.5
WSS2.5
EDTV1.5
EDTV2.5
EDTV3.5
CGMS1.5
CGMS2.5
CGMS3.5
CCAP1.5
CCAP2.5
LB_LCT.5
LB_LCM.5
LB_LCB.5
WSS1.4
WSS2.4
EDTV1.4
EDTV2.4
EDTV3.4
CGMS1.4
CGMS2.4
CGMS3.4
CCAP1.4
CCAP2.4
LB_LCT.4
LB_LCM.4
LB_LCB.4
CGMSD
WSS1.3
WSS2.3
EDTV1.3
EDTV2.3
EDTV3.3
CGMS1.3
CGMS2.3
CGMS3.3
CCAP1.3
CCAP2.3
LB_LCT.3
LB_LCM.3
LB_LCB.3
EDTVD
WSS1.2
WSS2.2
EDTV1.2
EDTV2.2
EDTV3.2
CGMS1.2
CGMS2.2
CGMS3.2
CCAP1.2
CCAP2.2
LB_LCT.2
LB_LCM.2
LB_LCB.2
CCAPD
WSS1.1
WSS2.1
EDTV1.1
EDTV2.1
EDTV3.1
CGMS1.1
CGMS2.1
CGMS3.1
CCAP1.1
CCAP2.1
LB_LCT.1
LB_LCM.1
LB_LCB.1
WSSD
WSS1.0
WSS2.0
EDTV1.0
EDTV2.0
EDTV3.0
CGMS1.0
CGMS2.0
CGMS3.0
CCAP1.0
CCAP2.0
LB_LCT.0
LB_LCM.0
LB_LCB.0
WSS1.7
WSS2.7
EDTV1.7
EDTV2.7
EDTV3.7
CGMS1.7
CGMS2.7
CGMS3.7
CCAP1.7
CCAP2.7
LB_LCT.7
LB_LCM.7
LB_LCB.7
CRC_ENABLE
ADC1_SW.3
ADC_SW_M
AN
ADC1_SW.2
ADC1_SW.1
ADC1_SW.0
ADC0_SW.3
ADC2_SW.3
ADC0_SW.2
ADC2_SW.2
ADC0_SW.1
ADC2_SW.1
ADC0_SW.0
ADC2_SW.0
LB_SL.3
LB_SL.2
LB_SL.1
LB_TH.4
LB_SL.0
LB_TH.3
LB_EL.3
LB_TH.2
LB_EL.2
LB_TH.1
LB_EL.1
LB_TH.0
LB_EL.0
SD_OFF_CB.7
SD_OFF_CR.7
SD_SAT_CB.7
SD_SAT_CR.7
NVBEGDEL O
NVENDDEL O
NFTOGDEL O
PVBEGDEL O
PVENDDEL O
PFTOGDEL O
SD_OFF_CB.6
SD_OFF_CR.6
SD_SAT_CB.6
SD_SAT_CR.6
NVBEGDEL E
NVENDDEL E
NFTOGDEL E
PVBEGDEL E
PVENDDEL E
PFTOGDEL E
SD_OFF_CB.5
SD_OFF_CR.5
SD_SAT_CB.5
SD_SAT_CR.5
NVBEGSIGN
NVENDSIGN
NFTOGSIGN
PVBEGSIGN
PVENDSIGN
PFTOGSIGN
SD_OFF_CB.4
SD_OFF_CR.4
SD_SAT_CB.4
SD_SAT_CR.4
NVBEG.4
NVEND.4
NFTOG.4
PVBEG.4
PVEND.4
PFTOG.4
SD_OFF_CB.3
SD_OFF_CR.3
SD_SAT_CB.3
SD_SAT_CR.3
NVBEG.3
NVEND.3
NFTOG.3
PVBEG.3
PVEND.3
PFTOG.3
SD_OFF_CB.2
SD_OFF_CR.2
SD_SAT_CB.2
SD_SAT_CR.2
NVBEG.2
NVEND.2
NFTOG.2
PVBEG.2
PVEND.2
PFTOG.2
SD_OFF_CB.1
SD_OFF_CR .1
SD_SAT_CB.1
SD_SAT_CR.1
NVBEG.1
NVEND.1
NFTOG.1
PVBEG.1
PVEND.1
PFTOG.1
SD_OFF_CB.0
SD_OFF_CR.0
SD_SAT_CB.0
SD_SAT_CR.0
NVBEG.0
NVEND.0
NFTOG.0
PVBEG.0
PVEND.0
PFTOG.0
DR_STR.1
DR_STR.0
DR_STR_C.1
DR_STR_C.0
DR_STR_S.1
DR_STR_S.0
VS_COAST_
MODE.1
IFFILTSEL.2
VS_COAST_
MODE.0
IFFILTSEL.1
EXTEND_VS_
MIN_FREQ
IFFILTSEL.0
EXTEND_VS_
MAX_FREQ
Rev. B | Page 65 of 100
ADV7183B
I2C REGISTER MAP DETAILS
P
P
The following registers are located in the Common I2C Map and Register Access Page 2.
Table 84. Interrupt (Page 2) Register Map Bit Names 1
15F
Register
Name
Reset
Value
Interrupt
Config 0
Reserved
Interrupt
Status 1
Interrupt
Clear 1
Interrupt
Maskb 1
Reserved
Interrupt
Status 2
Interrupt
Clear 2
Interrupt
Maskb 2
0001
x000
Raw
Status 3
Interrupt
Status 3
Interrupt
Clear 3
Interrupt
Maskb 3
1
x000
0000
x000
0000
0xxx
0000
0xxx
0000
xx00
0000
xx00
0000
Subaddress
rw
rw
Dec
64
Hex
0x40
r
65
66
0x41
0x42
w
67
0x43
rw
68
0x44
r
69
70
0x45
0x46
w
71
0x47
rw
72
0x48
r
73
0x49
r
74
0x4A
w
75
0x4B
rw
76
0x4C
Bit 7
Bit 6
Bit 5
Bit 4
INTRQ_DUR
_SEL.1
INTRQ_DUR
_SEL.0
MV_INTRQ_
SEL.1
MV_INTRQ_
SEL.0
MV_PS_CS_
Q
MV_PS_CS_
CLR
MV_PS_CS_
MSKB
SD_FR_CHN
G_Q
SD_FR_CHN
G_CLR
SD_FR_CHN
G_MSKB
MPU_STIM_
INTRQ_Q
MPU_STIM_
INTRQ_CLR
MPU_STIM_
INTRQ_
MSKB
Bit 3
WSS_
CHNGD_Q
WSS_
CHNGD_CLR
WSS_
CHNGD_
MSKB
SCM_LOCK
PAL_SW_LK
_CHNG_Q
PAL_SW_LK
_CHNG_CLR
PAL_SW_LK
_CHNG_
MSKB
SCM_LOCK_
CHNG_Q
SCM_LOCK_
CHNG_CLR
SCM_LOCK_
CHNG_
MSKB
SD_AD_
CHNG_Q
SD_AD_CH
NG_CLR
SD_AD_
CHNG_
MSKB
To access the Interrupt Register Map, the Register Access page[1:0] in Register Address 0x0E must be programmed to 01b.
Rev. B | Page 66 of 100
Bit 2
Bit 1
Bit 0
MPU_STIM_
INTRQ
INTRQ_OP_
SEL.1
INTRQ_OP_
SEL.0
SD_UNLOCK
_Q
SD_UNLOCK
_CLR
SD_UNLOCK
_MSKB
SD_LOCK_Q
GEMD_Q
CCAPD_Q
GEMD_CLR
CCAPD_CLR
SD_LOCK_
CLR
SD_LOCK_
MSKB
CGMS_
CHNGD_Q
CGMS_CHN
GD_CLR
CGMS_
CHNGD_
MSKB
SD_H_LOCK
GEMD_
MSKB
CCAPD_
MSKB
SD_V_LOCK
SD_H_LOCK
_CHNG_Q
SD_H_LOCK
_CHNG_CLR
SD_H_LOCK
_CHNG_
MSKB
SD_V_LOCK
_CHNG_Q
SD_V_LOCK
_CHNG_CLR
SD_V_LOCK
_CHNG_
MSKB
SD_OP_
50HZ
SD_OP_
CHNG_Q
SD_OP_
CHNG_CLR
SD_OP_
CHNG_
MSKB
ADV7183B
Table 85. Interrupt Register Map Details
Bit
Subaddress
0x40
Register
Interrupt
Config 1
Bit Description
INTRQ_OP_SEL[1:0].
Interrupt Drive Level Select
Register
Access
Page 2
MPU_STIM_INTRQ[1:0].
Manual Interrupt Set Mode
7
6
0x41
0x42
Reserved
Interrupt
Status 1
4
3
2
1
0
0
1
1
0
0
1
0
1
x
x
0
1
0
1
Reserved
MV_INTRQ_SEL[1:0].
Macrovision Interrupt
Select
INTRQ_DUR_SEL[1:0].
Interrupt Duration Select
5
x
0
0
1
1
x
0
1
0
1
x
0
0
1
1
0
1
0
1
x
x
x
x
SD_LOCK_Q
Read Only
SD_UNLOCK_Q
0
1
Register
Access
Page 2
Reserved
Reserved
Reserved
SD_FR_CHNG_Q
Comments
Open drain.
Drive low when active.
Drive high when active.
Reserved.
Manual interrupt mode disabled.
Manual interrupt mode enabled.
Not used.
Reserved.
Pseudo sync only.
Color stripe only.
Pseudo sync or color stripe.
3 Xtal periods.
15 Xtal periods.
63 Xtal periods.
Active until cleared.
No change.
SD input has caused the decoder
to go from an un-locked state to a
locked state.
No change.
SD input has caused the decoder
to go from a locked state to an
unlocked state.
x
x
x
0
1
MV_PS_CS_Q
No change.
Denotes a change in the free-run
status.
No change.
Pseudo sync/color striping
detected. See
0
1
MV_INTRQ_SEL[1:0],
Macrovision Interrupt Selection
Bits Address 0x40 (Interrupt
Space)[5:4] for selection.
264H
0x43
Interrupt
Clear 1
Reserved
SD_LOCK_CLR
x
0
1
SD_UNLOCK_CLR
0
1
Write Only
Register
Access
Page 2
Reserved
Reserved
Reserved
SD_FR_CHNG_CLR
0
0
0
0
1
MV_PS_CS_CLR
Reserved
0
1
x
Rev. B | Page 67 of 100
Do not clear.
Clears SD_LOCK_Q bit.
Do not clear.
Clears SD_UNLOCK_Q bit.
Not used.
Not used.
Not used.
Do not clear.
Clears SD_FR_CHNG_Q bit.
Do not clear.
Clears MV_PS_CS_Q bit.
Not used.
Notes
These bits
can be
cleared or
masked in
Registers
0x43 and
0x44,
respectively.
ADV7183B
Bit
Subaddress
0x44
Register
Interrupt
Mask 1
Bit Description
SD_LOCK_MSKB
7
6
5
4
3
2
SD_UNLOCK_MSKB
Read/Write
Register
Register
Access
Page 2
Reserved
Reserved
Reserved
SD_FR_CHNG_MSKB
Reserved
Reserved
Interrupt
Status 2
0
0
1
0
1
0
0
0
0
1
MV_PS_CS_MSKB
0x45
0x46
1
0
1
x
x
x
x
x
x
x
x
CCAPD_Q
x
0
1
Read Only
Register
Register
Access
Page 2
GEMD_Q
0
1
CGMS_CHNGD_Q
0
1
WSS_CHNGD_Q
0
1
Reserved
Reserved
Reserved
MPU_STIM_INTRQ_Q
0x47
Interrupt
Clear 2
x
x
x
0
1
CCAPD_CLR
0
1
GEMD_CLR
0
1
Write Only
Register
Access
Page 2
CGMS_CHNGD_CLR
0
1
WSS_CHNGD_CLR
Reserved
Reserved
Reserved
MPU_STIM_INTRQ_CLR
0
1
x
x
x
0
1
Rev. B | Page 68 of 100
Comments
Masks SD_LOCK_Q bit.
Unmasks SD_LOCK_Q bit.
Masks SD_UNLOCK_Q bit.
Unmasks SD_UNLOCK_Q bit
Not used.
Not used.
Not used.
Masks SD_FR_CHNG_Q bit.
Unmasks SD_FR_CHNG_Q bit.
Masks MV_PS_CS_Q bit.
Unmasks MV_PS_CS_Q bit.
Not used.
Notes
Closed captioning not detected in
the input video signal
Closed captioning data detected
in the video input signal.
Gemstar data not detected in the
input video signal.
Gemstar data detected in the
input video signal.
No change detected in CGMS
data in the input video signal.
A change is detected in the CGMS
data in the input video signal.
No change detected in WSS data
in the input video signal.
A change is detected in the WSS
data in the input video signal.
Not used.
Not used.
Not used.
Manual interrupt not set.
Manual interrupt set.
Do not clear.
Clears CCAPD_Q bit.
Do not clear.
Clears GEMD_Q bit.
Do not clear.
Clears CGMS_CHNGD_Q bit.
Do not clear.
Clears WSS_CHNGD_Q bit.
Not used.
Not used.
Not used.
Do not clear.
Clears MPU_STIM_INTRQ_Q bit.
These bits
can be
cleared or
masked by
Registers
0x47 and
0x48,
respectively.
ADV7183B
Bit
Subaddress
0x48
Register
Interrupt
Mask 2
Bit Description
CCAPD_MSKB
7
6
5
4
3
2
GEMD_MSKB
CGMS_CHNGD_MSKB
0x49
Raw
Status 3
Read Only
Register
0
1
WSS_CHNGD_MSKB
Reserved
Reserved
Reserved
MPU_STIM_INTRQ_MSKB
0
0
1
0
1
Read/Write
Register
Access
Page 2
1
0
1
0
0
0
0
1
SD_OP_50Hz
SD 60/50Hz frame rate at
output
SD_V_LOCK
0
1
0
1
Register
Access
Page 2
SD_H_LOCK
0
1
Reserved
SCM_LOCK
SECAM Lock
0x4A
Interrupt
Status 3
Read Only
Register
Register
Access
Page 2
Reserved
Reserved
Reserved
SD_OP_CHNG_Q
SD 60/50 Hz frame rate at
input
x
0
1
x
x
x
0
1
SD_V_LOCK_CHNG_Q
0
1
SD_H_LOCK_CHNG_Q
0
1
SD_AD_CHNG_Q
SD autodetect changed
x
SCM_LOCK_CHNG_Q
SECAM Lock
0
1
PAL_SW_LK_CHNG_Q
Reserved
Reserved
x
x
x
Rev. B | Page 69 of 100
Comments
Masks CCAPD_Q bit.
Unmasks CCAPD_Q bit.
Masks GEMD_Q bit.
Unmasks GEMD_Q bit.
Masks CGMS_CHNGD_Q bit.
Unmasks CGMS_CHNGD_Q bit.
Masks WSS_CHNGD_Q bit..
Unmasks WSS_CHNGD_Q bit.
Not used.
Not used.
Not used.
Masks MPU_STIM_INTRQ_Q bit.
Unmasks MPU_STIM_INTRQ_Q
bit.
SD 60 Hz signal output.
SD 50 Hz signal output.
SD vertical sync lock not
established.
SD vertical sync lock established.
SD horizontal sync lock not
established.
SD horizontal sync lock
established.
Not used.
SECAM lock not established.
SECAM lock established.
Not used.
Not used.
Not used.
No change in SD signal standard
detected at the input.
A change in SD signal standard is
detected at the input.
No change in SD vertical sync lock
status.
SD vertical sync lock status has
changed.
No change in SD horizontal sync
lock status.
SD horizontal sync lock status has
changed.
No change in AD_RESULT[2:0]
bits in Status Register 1.
AD_RESULT[2:0] bits in Status
Register 1 have changed.
No change in SECAM lock status.
SECAM lock status has changed.
No change in PAL swinging burst
lock status.
PAL swinging burst lock status
has changed.
Not used.
Not used.
Notes
These bits
cannot be
cleared or
masked.
Register 0x4A
is used for
this purpose.
These bits
can be
cleared and
masked by
Registers
0x4B and
0x4C,
respectively.
ADV7183B
Bit
Subaddress
0x4B
Register
Interrupt
Clear 3
Bit Description
SD_OP_CHNG_CLR
7
6
5
4
3
2
SD_V_LOCK_CHNG_CLR
Write Only
Register
Register
Access
Page 2
0
1
SD_AD_CHNG_CLR
0
1
SCM_LOCK_CHNG_CLR
0
1
PAL_SW_LK_CHNG_CLR
0x4C
Interrupt
Mask 2
0
1
x
x
0
1
SD_V_LOCK_CHNG_ MSKB
0
1
Read/Write
Register
Register
Access
Page 2
SD_H_LOCK_CHNG_ MSKB
0
1
SD_AD_CHNG_ MSKB
0
1
SCM_LOCK_CHNG_ MSKB
0
1
PAL_SW_LK_CHNG_ MSKB
Reserved
Reserved
0
0
1
0
1
SD_H_LOCK_CHNG_CLR
Reserved
Reserved
SD_OP_CHNG_MSKB
1
0
1
x
x
Rev. B | Page 70 of 100
Comments
Do not clear.
Clears SD_OP_CHNG_Q bit.
Do not clear.
Clears SD_V_LOCK_CHNG_Q bit.
Do not clear.
Clears SD_H_LOCK_CHNG_Q bit.
Do not clear.
Clears SD_AD_CHNG_Q bit.
Do not clear.
Clears SCM_LOCK_CHNG_Q bit.
Do not clear.
Clears PAL_SW_LK_CHNG_Q bit.
Not used.
Not used.
Masks SD_OP_CHNG_Q bit.
Unmasks SD_OP_CHNG_Q bit.
Masks SD_V_LOCK_CHNG_Q bit.
Unmasks SD_V_LOCK_CHNG_Q
bit.
Masks SD_H_LOCK_CHNG_Q bit.
Unmasks SD_H_LOCK_CHNG_Q
bit.
Masks SD_AD_CHNG_Q bit.
Unmasks SD_AD_CHNG_Q bit.
Masks SCM_LOCK_CHNG_Q bit
Unmasks SCM_LOCK_CHNG_Q
bit.
Masks PAL_SW_LK_CHNG_Q bit.
Unmasks PAL_SW_LK_CHNG_Q
bit.
Not used.
Not used.
Notes
ADV7183B
The following registers are located in the Common I2C Map and Register Access Page 1.
Table 86. Interrupt Register Map Details
Subaddress
Register
Bit Description
0x00
Input
Control
INSEL[3:0]. The INSEL bits allow the
user to select an input channel as
well as the input format.
VID_SEL[3:0]. The VID_SEL bits allow
the user to select the input video
standard.
7 6
5
Bits
4 3
0
0
0
0
0
0
0
0
1
1
2
0
0
0
0
1
1
1
1
0
0
1
0
0
1
1
0
0
1
1
0
0
0
0
1
0
1
0
1
0
1
0
1
1
0
1
0
1
1
1
1
1
0
1
1
1
1
1
0
0
1
1
1
0
1
0
1
0 0
0
0
0 0
0
1
0 0
1
0
0 0
1
1
0
0
0
0
1
1
1
1
1
1
0
0
0
0
1
1
0
0
0
1
0
1
0
1
1
1
1
1
1
1
0
0
1
1
1
1
1
1
0
0
1
1
0
1
0
1
0
1
Rev. B | Page 71 of 100
Comments
CVBS in on AIN1.
CVBS in on AIN2.
CVBS in on AIN3.
CVBS in on AIN4.
CVBS in on AIN5.
CVBS in on AIN6.
Y on AIN1, C on AIN4.
Y on AIN2, C on AIN5.
Y on AIN3, C on AIN6.
Y on AIN1, Pr on AIN4,
Pb on AIN5.
Y on AIN2, Pr on AIN3,
Pb on AIN6.
CVBS in on AIN7.
CVBS in on AIN8.
CVBS in on AIN9.
CVBS in on AIN10.
CVBS in on AIN11.
Auto-detect PAL
(B/G/H/I/D), NTSC
(without pedestal),
SECAM.
Auto-detect PAL
(B/G/H/I/D), NTSC-M (with
pedestal), SECAM.
Auto-detect PAL-N,
NTSC-M (without
pedestal), SECAM.
Auto-detect PAL-N,
NTSC-M (with pedestal),
SECAM.
NTSC-J.
NTSC-M.
PAL60.
NTSC-4.43.
PAL-B/G/H/I/D.
PAL-N (B/G/H/I/D without
pedestal).
PAL-M (without pedestal).
PAL-M.
PAL Combination N.
PAL Combination N.
SECAM (with pedestal).
SECAM (with pedestal).
Notes
Composite.
S-Video
YPbPr
Composite
ADV7183B
Subaddress
Register
Bit Description
0x01
Video
Selection
Reserved
ENVSPROC
7 6
Reserved
SD_DUP_AV. Duplicates the AV
codes from the luma into the
chroma path.
Extended
Output
Control
1
0
1
0
0
0
0
0
0
0
0
0
0
0
1
1
0
1
0
1
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Comments
Set to default.
Disable Vsync processor.
Enable Vsync processor.
Set to default.
Standard video input.
Betacam input enable.
Disable Hsync processor.
Enable Hsync processor.
Set to default.
AV codes to suit 8-bit
interleaved data output.
AV codes duplicated (for
16-bit interfaces).
Set as default.
Reserved.
Reserved.
16-bit @ LLC1 4:2:2.
8-bit @ LLC1 4:2:2
ITU-R BT.656.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
Output pins enabled.
Notes
See TIM_OE, Address
0x04[3] and
Introduction.
265H
26H
1
0
1
RANGE. Allows the user to select the
range of output values. Can be
BT656 compliant, or can fill the
whole accessible number range.
EN_SFL_PIN
0
1
0
1
BL_C_VBI. Blank Chroma during VBI.
If set, enables data in the VBI region
to be passed through the decoder
undistorted.
TIM_OE. Timing signals output
enable.
Reserved
Reserved
BT656-4. Allows the user to select
an output mode-compatible with
ITU- R BT656-3/4.
0
0
0
1
TOD. Three-State Output Drivers.
This bit allows the user to threestate the output drivers: P[19:0], HS,
VS, FIELD, and SFL.
0x04
1
0
0
Reserved
OF_SEL[3:0]. Allows the user to
choose from a set of output formats.
VBI_EN. Allows VBI data (Lines 1 to
21) to be passed through with only a
minimum amount of filtering
performed.
2
0
0
1
ENHSPLL
Output
Control
Bits
4 3
0
1
Reserved
BETACAM
0x03
5
0
1
0
1
x
Drivers three-stated.
All lines filtered and
scaled.
Only active video region
filtered.
16 < Y < 235,
16 < C < 240.
1 < Y < 254, 1 < C < 254.
SFL output is disabled.
SFL information output
on the SFL pin.
Decode and output color.
Blank Cr and Cb.
HS, VS, F three-stated.
HS, VS, F forced active.
x
1
0
1
Rev. B | Page 72 of 100
BT656-3-compatible.
BT656-4-compatible.
ITU-R BT.656.
Extended range.
SFL output enables
encoder and decoder
to be connected
directly.
During VBI.
Controlled by TOD.
ADV7183B
Subaddress
Register
Bit Description
0x07
Autodetect
Enable
AD_PAL_EN. PAL B/G/I/H autodetect
enable.
7 6
5
Bits
4 3
2
AD_NTSC_EN. NTSC autodetect
enable.
1
0
0
1
0
1
AD_PALM_EN. PAL M autodetect
enable.
1
Enable.
Disable.
0
1
AD_P60_EN. PAL60 autodetect
enable.
Enable.
Disable.
0
1
AD_N443_EN. NTSC443 autodetect
enable.
Enable.
Disable.
0
1
AD_SECAM_EN. SECAM autodetect
enable.
Enable.
Disable.
0
1
AD_SEC525_EN. SECAM 525
autodetect enable.
0
0
0
0
0
0
Reserved
BRI[7:0]. This register controls the
brightness of the video signal.
1 0
0 0
0
0
0
0
0
0
0
0
0
0
0
0
HUE[7:0]. This register contains the
value for the color hue adjustment.
DEF_VAL_EN. Default value enable.
0 0
0
0
0
0
0
0
Contrast
Register
CON[7:0]. Contrast adjust. This is the
user control for contrast adjustment.
0x09
0x0A
Reserved
Brightness
Register
0x0B
Hue
Register
Default
Value Y
0x0C
Enable
Disable.
0
1
1 0
0x08
0
1
0
1
DEF_VAL_AUTO_EN. Default value.
Enable.
Luma gain = 1.
Free-run mode
dependent on
DEF_VAL_AUTO_EN.
Force free-run mode on
and output blue screen.
Disable free-run mode.
Enable automatic freerun mode (blue screen).
0 0
1
1
0
1
0 1
1
1
1
1
0
0
Cr[7:0] = DEF_C[7:4], 0, 0,
0, 0};
Cb[7:0] = DEF_C[3:0], 0, 0,
0, 0}.
0
0
0
0
0
Set as default.
Default
Value C
DEF_C[7:0]. Default value C. The Cr
and Cb default values are defined in
this register.
0x0E
ADI
Control
Reserved.
SUB_USR_EN. Enables the user to
access the interrupt map.
Reserved.
0
1
0 0
Rev. B | Page 73 of 100
0x00 Gain = 0;
0x80 Gain = 1;
0xFF Gain = 2.
0x00 = 0IRE;
0x7F = +100IRE;
0x80 = –100IRE.
Hue range =
–90° to +90°.
DEF_Y[5:0]. Default value Y. This
register holds the Y default value.
0x0D
Notes
Enable.
Disable.
0
AD_PALN_EN. PAL N autodetect
enable.
Comments
Disable.
Enable.
Disable.
Y[7:0] = {DEF_Y[5:0], 0, 0}.
Access user reg map.
Access interrupt reg map.
Set as default.
When lock is lost, freerun mode can be
enabled to output
stable timing, clock,
and a set color.
Default Y value output
in free-run mode.
Default Cb/Cr value
output in free-run
mode. Default values
give blue screen
output.
See Figure 38.
267H
ADV7183B
Subaddress
Register
Bit Description
0x0F
Power
Reserved
7 6
5
Bits
4 3
2
1
0
0
0
Comments
Set to default.
Notes
Management
PDBP. Power-down bit priority
selects between PWRDN bit or PIN.
0
0
Chip power-down
controlled by pin.
Bit has priority (pin
disregarded).
Set to default.
System functional.
Powered down.
Set to default.
Normal operation.
1
Start reset sequence.
1
Reserved
PWRDN. Power-down places the
decoder in a full power-down mode.
Reserved
RES. Chip reset loads all I2C bits with
default values.
0x10
Status
Register 1,
Read Only
0
0
IN_LOCK
LOST_LOCK
FSC_LOCK
FOLLOW_PW
x
x
0x12
IDENT
Read Only
Status
Register 2,
Read Only.
COL_KILL
IDENT[7:0]. Provides identification
on the revision of the part.
x
x
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
x
x
x
x
Status
Register 3,
Read Only.
Analog
Clamp
Control
x
FSC frequency nonstandard.
x
See PDBP, 0x0F Bit 2.
Executing reset takes
approximately 2 ms.
This bit is self-clearing.
Provides information
about the internal
status of the decoder.
Detected standard.
Color kill.
ADV7183B = 0x13.
1 = detected.
0 = Type 2,
1 = Type 3.
1 = detected.
1 = detected.
1 = detected.
1 = detected.
x
x
x
SD 60 Hz detected.
SD 50 Hz detected.
1 = free-run mode active.
1 = field length standard.
0
1 = interlaced video
detected.
1 = swinging burst
detected.
Set to default.
Current sources switched
off.
Current sources enabled.
Set to default.
x
x
x
x
0
0
1
0 0
1 = horizontal lock
achieved.
Rev. B | Page 74 of 100
0
1
Unfiltered.
1 = Gemstar data detected.
x
x
Reserved
CCLEN. Current clamp enable allows
the user to switch off the current
sources in the analog front.
Reserved
MV pseudo sync
detected.
MV AGC pulses detected.
Nonstandard line length.
x
x
MV color striping detected.
MV color striping type.
x
INTERLACED
0x14
x
x
GEMD
SD_OP_50HZ
Reserved
FREE_RUN_ACT
STD FLD_LEN
PAL_SW_LOCK
x
x
MV PS DET
0x13
x
MVCS DET
MVCS T3
MV AGC DET
LL NSTD
FSC NSTD
Reserved
INST_HLOCK
FSC lock (right now) = 1.
Peak white AGC mode
active = 1.
NTSM-MJ.
NTSC-443.
PAL-M.
PAL60.
PAL-B/G/H/I/D.
SECAM.
PAL-combination N.
SECAM 525.
Color kill is active = 1.
x
0
0
0
0
1
1
1
1
In lock (right now) = 1.
Lost lock (since last read) = 1.
x
AD_RESULT[2:0]. Autodetection
result reports the standard of the
input video.
0x11
0
0
1
0
SD Field rate detect.
Blue screen output.
Correct field length
found.
Field sequence found.
Reliable swinging
burst sequence.
ADV7183B
Subaddress
Register
Bit Description
0x15
Digital
Clamp
Control 1
Reserved
DCT[1:0]. Digital clamp timing
determines the time constant of the
digital fine clamp circuitry.
0x17
Shaping
Filter
Control
Reserved
YSFM[4:0]. Selects Y-Shaping Filter
mode when in CVBS only mode.
7 6
5
0
0
1
1
0
1
0
1
2
x
1
x
0
x
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0 0
0 0
0
1
Comments
Set to default.
Slow (TC = 1 sec).
Medium (TC = 0.5 sec).
Fast (TC = 0.1 sec).
TC dependent on video.
Set to default.
Auto wide notch for poor
quality sources or wideband filter with comb for
good quality input.
Auto narrow notch for
poor quality sources or
wideband filter with
comb for good quality
input.
SVHS 1.
SVHS 2.
SVHS 3.
SVHS 4.
SVHS 5.
SVHS 6.
SVHS 7.
SVHS 8.
SVHS 9.
SVHS 10.
SVHS 11.
SVHS 12.
SVHS 13.
SVHS 14.
SVHS 15.
SVHS 16.
SVHS 17.
SVHS 18 (CCIR601).
PAL NN1.
PAL NN2.
PAL NN3.
PAL WN 1.
PAL WN 2.
NTSC NN1.
NTSC NN2.
NTSC NN3.
NTSC WN1.
NTSC WN2.
NTSC WN3.
Reserved.
Auto selection 1.5 MHz.
Auto selection 2.17 MHz.
0
0
1
1
1
1
0
1
0
1
0
1
SH1.
SH2.
SH3.
SH4.
SH5.
Wideband mode.
0
Allows the user to select a wide
range of low-pass and notch filters.
If either auto mode is selected, the
decoder selects the optimum Y filter
depending on the CVBS video
source quality (good vs. bad).
CSFM[2:0].
C-Shaping Filter mode allows the
selection from a range of low-pass
chrominance filters, SH1 to SH5 and
wideband mode.
Bits
4 3
0 x
1
1
0
0
1
1
Rev. B | Page 75 of 100
Notes
Decoder selects
optimum Y-shaping
filter depending on
CVBS quality.
If one of these modes
is selected, the
decoder does not
change filter modes.
Depending on video
quality, a fixed filter
response (the one
selected) is used for
good and bad quality
video.
Automatically selects
a C filter for the
specified bandwidth.
ADV7183B
Subaddress
Register
Bit Description
0x18
Shaping
Filter
Control 2
WYSFM[4:0]. Wideband Y shaping
filter mode allows the user to select
which Y shaping filter is used for the
Y component of Y/C, YPbPr, B/W
input signals; it is also used when a
good quality input CVBS signal is
detected. For all other inputs, the Y
shaping filter chosen is controlled
by YSFM[4:0].
Reserved
WYSFMOVR. Enables the use of
automatic WYSFN filter.
7 6
0
5
Bits
4 3
0 0
0 0
0 0
0 0
0 0
0 0
2
0
0
0
0
1
1
1
0
0
1
1
0
0
0
0
1
0
1
0
1
Comments
Reserved. Do not use.
Reserved. Do not use.
SVHS 1.
SVHS 2.
SVHS 3.
SVHS 4.
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
~
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
~
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
~
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
~
1
SVHS 5.
SVHS 6.
SVHS 7.
SVHS 8.
SVHS 9.
SVHS 10.
SVHS 11.
SVHS 12.
SVHS 13.
SVHS 14.
SVHS 15.
SVHS 16.
SVHS 17.
SVHS 18 (CCIR 601).
Reserved. Do not use.
Reserved. Do not use.
Reserved. Do not use.
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
~
1
0
0
1
0x19
Comb
Filter
Control
PSFSEL[1:0]. Controls the signal
bandwidth that is fed to the comb
filters (PAL).
NSFSEL[1:0]. Controls the signal
bandwidth that is fed to the comb
filters (NTSC).
0x1D
ADI
Control 2
Reserved
Reserved
VS_JIT_COMP_EN
1 1
1
0
0
1
0
1
0
x
0
1
EN28XTAL
TRI_LLC
1
0
0
1
1
0
1
0
1
Rev. B | Page 76 of 100
0
0
1
1
0
1
0
1
x
x
Set to default.
Auto selection of best
filter.
Manual select filter using
WYSFM[4:0].
Narrow.
Medium.
Wide.
Widest.
Narrow.
Medium.
Medium.
Wide.
Set as default.
Set as default.
Enabled.
Disabled.
Use 27 MHz crystal.
Use 28 MHz crystal.
LLC pin active.
LLC pin three-stated.
Notes
ADV7183B
Subaddress
Register
Bit Description
0x27
Pixel Delay
Control
LTA[1:0]. Luma timing adjust allows
the user to specify a timing
difference between chroma and
luma samples.
7 6
Reserved
CTA[2:0]. Chroma timing adjust
allows a specified timing difference
between the luma and chroma
samples.
0x2B
Misc Gain
Control
Bits
4 3
2
1
0
0
0
Comments
No delay.
1
0
1
0
Luma 1 clk (37 ns)
delayed.
Luma 2 clk (74 ns) early.
1
1
Luma 1 clk (37 ns) early.
0
0
0
0
0
1
1
1
1
AUTO_PDC_EN. Automatically
programs the LTA/CTA values so
that luma and chroma are aligned at
the output for all modes of
operation.
SWPC. Allows the Cr and Cb samples
to be swapped.
5
0
0
1
1
0
0
1
1
Set to zero.
Not valid setting.
Chroma + 2 pixels (early).
Chroma + 1 pixel (early).
No delay.
Chroma − 1 pixel (late).
Chroma − 2 pixels (late).
Chroma − 3 pixels (late).
Not valid setting.
Use values in LTA[1:0] and
CTA[2:0] for delaying
luma/chroma.
0
1
0
1
0
1
0
1
0
1
0
No swapping.
1
Swap the Cr and Cb O/P
samples.
Update once per video
line.
Update once per field.
0
1
0x2C
AGC Mode
Control
1
Reserved
0
0
0
0
Set to default.
Color kill disabled.
Color kill enabled.
0
1
1
Reserved
LAGC[2:0]. Luma automatic gain
control selects the mode of
operation for the gain control in the
luma path.
CVBS mode
CTA[2:0] = 011b.
S-Video mode
CTA[2:0] = 101b.
YPrPb mode
CTA[2:0] = 110b.
LTA and CTA values
determined
automatically.
PW_UPD. Peak white update
determines the rate of gain.
Reserved
CKE. Color kill enable allows the
color kill function to be switched on
and off.
Reserved
CAGC[1:0]. Chroma automatic gain
control selects the basic mode of
operation for the AGC in the chroma
path.
Notes
CVBS mode
LTA[1:0] = 00b;
S-Video mode
LTA[1:0]= 01b,
YPrPb mode
LTA[1:0] = 01b.
1
0
0
0
0
0
1
0
1
0
0
1
1
1
1
1
0
0
1
1
1
0
1
0
1
1
Rev. B | Page 77 of 100
1
0
0
0
1
1
1
0
1
Set to default.
Manual fixed gain.
Use luma gain for
chroma.
Automatic gain.
Freeze chroma gain.
Set to 1.
Manual fixed gain.
AGC Peak white
algorithm off.
AGC Peak white
algorithm on.
Reserved
Reserved.
Reserved
Reserved.
Freeze gain.
Set to 1.
Peak white must be
enabled. See LAGC[2:0]
Luma Automatic Gain
Control,
Address 0x2C[7:0]
268H
For SECAM color kill,
threshold is set at 8%.
See CKILLTHR[2:0].
Use CMG[11:0].
Based on color burst.
Use LMG[11:0].
Blank level to sync tip.
Blank level to sync tip.
ADV7183B
Subaddress
0x2D
Register
Chroma
Gain
Control 1
Bit Description
CMG[11:8]. Chroma manual gain can
be used to program a desired
manual chroma gain. Reading back
from this register in AGC mode gives
the current gain.
Reserved
CAGT[1:0]. Chroma automatic gain
timing allows adjustment of the
chroma AGC tracking speed.
0x2E
Chroma
Gain
Control 2
CMG[7:0]. Chroma manual gain
lower 8 bits. See CMG[11:8] for
description.
0x2F
Luma Gain
Control 1
LMG[11:8]. Luma manual gain can
be used to program a desired
manual chroma gain or to read back
the actual gain value used.
Reserved
LAGT[1:0]. Luma automatic gain
timing allows adjustment of the
luma AGC tracking speed.
0x30
Luma Gain
Control 2
LMG[7:0]. Luma manual gain can be
used to program a desired manual
chroma gain or read back the actual
used gain value.
0x31
VS and
FIELD
Control 1
Reserved
HVSTIM. Selects where within a line
of video the VS signal is asserted.
7 6
0
0
1
1
0
0
1
0
1
0
5
Bits
4 3
0
1
1
0
1
0
0
1
1
x
0
1
0
1
x
x
Vsync
Field
Control 2
Reserved
Reserved
1
0
0
0
0
0
0
0
x
x
x
x
1
x
x
x
x
x
0
1
0
0 0
VSBHE
Vsync
Field
Control 3
1
Manual VS/field position
controlled by Registers
0x32, 0x33, and 0xE5 to
0xEA.
0
0
0
0
1
Set to default.
0
VS goes high in the middle
of the line (even field).
VS changes state at the
start of the line (even field).
VS goes high in the middle
of the line (odd field).
VS changes state at the
start of the line (odd field).
Set to default.
0
0
0
0
0
1
VSEHO
Has an effect only if
CAGC[1:0] is set to
auto gain (10).
Min value is 0d
(G = –60 dB)
Max value is 3750
(G = 5).
Has an effect only if
LAGC[1:0] is set to
auto gain (001, 010,
011,or 100).
Min value:
NTSC 1024 (G = 0.85),
PAL (G = 0.81).
Max value:
NTSC 2468 (G = 2),
PAL = 2532 (G = 2).
HSE = Hsync end.
HSB = Hsync begin.
Set to default.
0
Reserved
VSEHE
Notes
CAGC[1:0] settings
decide in which mode
CMG[11:0] operates.
Set to default.
EAV/SAV codes
generated to suit ADI
encoders.
1
0x33
Set to 1.
Slow (TC = 2 sec).
Medium (TC = 1 sec).
Fast (TC = 0.2 sec).
Adaptive.
LMG[11:0] = 1234 dec;
gain is 1 in NTSC.
LMG[11:0] = 1266d; gain
is 1 in PAL.
0
1
VSBHO
Set to 1.
Slow (TC = 2 sec).
Medium (TC = 1 sec).
Fast (TC = 0.2 sec).
Adaptive.
CMG[11:0] = 750d; gain is
1 in NTSC;
CMG[11:0] = 741d; gain is
1 in PAL.
LAGC[1:0] settings decide
in which mode LMG[11:0]
operates.
Start of line relative to HSB.
0
0
Comments
Start of line relative to HSE.
0
1
NEWAVMODE. Sets the EAV/SAV
mode.
0x32
0
2
1
0
1
Rev. B | Page 78 of 100
1
0
VS goes low in the middle
of the line (even field).
VS changes state at the
start of the line (even field).
VS goes low in the middle
of the line (odd field).
VS changes state at the
start of the line odd field.
NEWAVMODE bit
must be set high.
NEWAVMODE bit
must be set high.
ADV7183B
Subaddress
Register
Bit Description
0x34
HS Position
0x35
HS Position
Control 2
0x36
HS Position
HSE[10:8]. HS end allows the
positioning of the HS output within
the video line.
Reserved
HSB[10:8]. HS begin allows the
positioning of the HS output within
the video line.
Reserved
HSB[7:0] Using HSB[10:0] and
HSE[10:0], the user can program the
position and length of HS output
signal.
HSE[7:0] See above.
0x37
Control 3
Polarity
PCLK. Sets the polarity of LLC1.
Control 1
7 6
5
Bits
4 3
0
0
0
0
0 0
0
0
0 0
0
0
NTSC
Comb
Control
0
0
0
0
1
0
0
0
0
0
0
0
1
1
1
1
0
0
0
1
1
Invert polarity.
Normal polarity as per the
timing diagrams.
Set to 0.
Active high.
Active low.
Set to 0.
Active high.
Active low.
Set to 0.
Active high.
Active low.
0
0
1
0
1
Adaptive 3-line, 3-tap luma .
0
0
1
0
0
1
YCMN[2:0]. Luma
comb mode, NTSC.
CCMN[2:0]. Chroma
comb mode, NTSC.
CTAPSN[1:0]. Chroma
comb taps, NTSC.
0
0
0
1
1
0
0
0
1
1
0
0
0
1
1
1
0
1
1
1
0
1
0
1
Rev. B | Page 79 of 100
Comments
HS output ends HSE[10:0]
pixels after the falling
edge of Hsync.
Set to 0.
HS output starts
HSB[10:0] pixels after the
falling edge of Hsync.
Set to 0.
0
1
0
1
Reserved.
PVS. Sets the VS polarity.
0x38
1
0
0
Reserved.
PF. Sets the FIELD polarity.
Reserved
PHS. Sets HS polarity.
2
0
Use low-pass notch.
Fixed luma comb (2-line).
Fixed luma comb (3-Line).
Fixed luma comb (2-line).
3-line adaptive for
CTAPSN = 01;
4-line adaptive for
CTAPSN = 10;
5-line adaptive for
CTAPSN = 11.
Disable chroma comb.
Fixed 2-line for
CTAPSN = 01;
Fixed 3-line for
CTAPSN = 10;
Fixed 4-line for
CTAPSN = 11.
Fixed 3-line for
CTAPSN = 01;
Fixed 4-line for
CTAPSN = 10;
Fixed 5-line for
CTAPSN = 11.
Fixed 2-line for
CTAPSN = 01;
Fixed 3-line for
CTAPSN = 10;
Fixed 4-line for
CTAPSN = 11.
Adapts 3 lines – 2 lines.
Not used.
Adapts 5 lines – 3 lines.
Adapts 5 lines – 4 lines.
Notes
Using HSB and HSE
the user can program
the position and
length of the output
Hsync.
Top lines of memory.
All lines of memory.
Bottom lines of memory.
Top lines of memory.
All lines of memory.
Bottom lines of
memory.
ADV7183B
Subaddress
Register
Bit Description
0x39
PAL Comb
Control
YCMP[2:0]. Luma Comb mode, PAL.
7 6
CCMP[2:0]. Chroma Comb mode,
PAL.
CTAPSP[1:0]. Chroma comb taps,
PAL.
5
Bits
4 3
0
0
0
1
1
0
0
0
1
1
1
0
1
1
1
2
0
1
0
0
0
1
1
1
1
0
1
1
1
0
0
0
1
0 0
0 1
1 0
1 1
0x3A
Reserved
PWRDN_ADC_2. Enables powerdown of ADC2.
0
0
1
PWRDN_ADC_1. Enables powerdown of ADC1.
0
1
PWRDN_ADC_0. Enables powerdown of ADC0.
0x3D
Manual
Window
Control
0
1
Reserved
Reserved
CKILLTHR[2:0].
0 0
0
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Reserved
0
0
Rev. B | Page 80 of 100
0
1
1
Comments
Adaptive 5-line, 3-tap
luma comb.
Use low-pass notch.
Fixed luma comb.
Fixed luma comb (5-line).
Fixed luma comb (3-line).
3-line adaptive for
CTAPSN = 01;
4-line adaptive for
CTAPSN = 10;
5-line adaptive for
CTAPSN = 11.
Disable chroma comb
Fixed 2-line for
CTAPSN = 01.
Fixed 3-line for
CTAPSN = 10.
Fixed 4-line for
CTAPSN = 11.
Fixed 3-line for
CTAPSN = 01.
Fixed 4-line for
CTAPSN = 10.
Fixed 5-line for
CTAPSN = 11.
Fixed 2-line for
CTAPSN = 01.
Fixed 3-line for
CTAPSN = 10.
Fixed 4-line for
CTAPSN = 11.
Not used.
Adapts 5 lines – 3 lines (2
taps).
Adapts 5 lines – 3 lines (3
taps).
Adapts 5 lines – 4 lines (4
taps).
Set as default.
ADC2 normal operation.
Power down ADC2.
ADC1 normal operation.
Power down ADC1.
ADC0 normal operation.
Power down ADC0.
Set as default.
Set to default.
Kill at 0.5%.
Kill at 1.5%.
Kill at 2.5%.
Kill at 4%.
Kill at 8.5%.
Kill at 16%.
Kill at 32%.
Reserved.
Set to default.
Notes
Top lines of memory.
All lines of memory.
Bottom lines of
memory.
Top lines of memory.
All lines of memory.
Bottom lines of
memory.
CKE = 1 enables the
color kill function and
must be enabled for
CKILLTHR[2:0] to take
effect.
ADV7183B
Subaddress
Register
Bit Description
0x41
Resample
Control
Reserved
SFL_INV. Controls the behavior of
the PAL switch bit.
7 6
5
0
Bits
4 3
1 0
2
0
1
0
0
0
0
1
Gemstar
Control 1
Gemstar
Control 2
Reserved
GDECEL[15:8]. See the Comments
column.
GDECEL[7:0]. See Comments
column.
0
0 0
0
0
0
0
0
0
0 0
0
0
0
0
0
0
0x4A
Gemstar
Control 3
GDECOL[15:8]. See the Comments
column.
0 0
0
0
0
0
0
0
0x4B
Gemstar
Control 4
GDECOL[7:0]. See Comments
column.
0 0
0
0
0
0
0
0
0x4C
Gemstar
Control 5
GDECAD. Controls the manner in
which decoded Gemstar data is
inserted into the horizontal blanking
period.
0x48
0x49
0x4D
CTI DNR
Control 1
Reserved
CTI_EN. CTI enable.
x
x
x
x
0x50
CTI DNR
Control 4
Reserved
CTI_CTH[7:0]. Specifies how big the
amplitude step must be to be
steepened by the CTI block.
DNR_TH[7:0]. Specifies the
maximum edge that is interpreted
as noise and is therefore blanked.
Split data into half byte.
1
Output in straight 8-bit
format.
x
0
1
Reserved
DNR_EN. Enable or bypass the DNR
block.
CTI DNR
Control 2
x
0
0
1
1
0
1
0
1
0
0
1
1 1
0 0
0
0
1
0
0
0
0 0
0
0
1
0
0
0
Rev. B | Page 81 of 100
GDECOL[15:0]. 16
individual enable bits that
select the lines of video
(odd field lines 10 to 25)
that the decoder checks
for Gemstar-compatible
data.
0
0
1
CTI_AB_EN. Enables the mixing of
the transient improved chroma with
the original signal.
CTI_AB[1:0]. Controls the behavior
of the alpha-blend circuitry.
0x4E
x
Comments
Set to default.
SFL compatible with
ADV7190/ADV7191/
ADV7194 encoders.
SFL compatible with
ADV717x/ADV7173x
encoders.
Set to default.
GDECEL[15:0]. 16
individual enable bits that
select the lines of video
(even field Lines 10 to 25)
that the decoder checks
for Gemstar-compatible
data.
Undefined.
Disable CTI.
Enable CTI.
Disable CTI alpha blender.
Enable CTI alpha blender.
Sharpest mixing.
Sharp mixing.
Smooth.
Smoothest.
Set to default.
Bypass the DNR block.
Enable the DNR block.
Set to default.
Set to 0x04 for A/V input;
set to 0x0A for tuner
input.
Notes
LSB = Line 10;
MSB = Line 25.
Default = Do not
check for Gemstarcompatible data on
any lines[10 to 25] in
even fields.
LSB = Line 10;
MSB = Line 25.
Default = Do not
check for Gemstarcompatible data on
any lines[10 to 25] in
odd fields.
To avoid 00/FF code.
ADV7183B
Subaddress
Register
Bit Description
0x51
Lock
Count
CIL[2:0]. Count-into-lock determines
the number of lines the system must
remain in lock before showing a
locked status.
5
Bits
4 3
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
0
1
0
1
7 6
COL[2:0]. Count-out-of-lock
determines the number of lines the
system must remain out-of-lock
before showing a lost-locked status.
SRLS. Select raw lock signal. Selects
the determination of the lock status.
2
0
0
0
0
1
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
0
0
0
1
0
1
0
1
0
1
0
1
FSCLE. Fsc lock enable.
0
1
0x8F
0x90
Free Run
Line
Length 1
VBI Info
Reserved
LLC_PAD_SEL[2:0]. Enables manual
selection of clock for LLC1 pin.
Reserved
WSSD. Screen signaling detected.
0
0
0
1
(Read Only)
CCAPD. Closed caption data.
0
1
EDTVD. EDTV sequence.
0
1
CGMSD. CGMS sequence.
0
1
Reserved.
0x91
WSS1
(Read Only)
0x92
WSS2
(Read Only)
0x93
WSS2
(Read Only)
0x94
EDTV2
(Read Only)
0x95
EDTV3
(Read Only)
0x96
CGMS1
(Read Only)
WSS1[7:0]
Wide screen signaling data.
WSS2[7:0]
Wide screen signaling data.
WSS2[7:0]
Wide screen signaling data.
EDTV2[7:0]
EDTV data register.
EDTV3[7:0]
EDTV data register.
CGMS1[7:0]
CGMS data register.
x
x
x
x
x
x
x
x
x
x
x
x
x x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Rev. B | Page 82 of 100
Comments
1 line of video.
2 lines of video.
5 lines of video.
10 lines of video.
100 lines of video.
500 lines of video.
1000 lines of video.
100000 lines of video.
1 line of video.
2 lines of video.
5 lines of video.
10 lines of video.
100 lines of video.
500 lines of video.
1000 lines of video.
100000 lines of video.
Over field with vertical
info.
Line-to-line evaluation.
Lock status set only by
horizontal lock.
Lock status set by
horizontal lock and
subcarrier lock.
Set to default.
LLC1 (nominal 27 MHz)
selected out on LLC1 pin.
LLC2 (nominally
13.5 MHz) selected out on
LLC1 pin.
Set to default.
No WSS detected.
WSS detected.
No CCAP signals
detected.
CCAP sequence detected.
No EDTV sequence
detected.
EDTV sequence detected.
No CGMS transition
detected.
CGMS sequence
decoded.
Notes
For 16-bit 4:2:2 out,
OF_SEL[3:0] = 0010.
Read only status bits.
WSS2[7:6] are
undetermined.
EDTV3[7:6] are
undetermined.
EDTV3[5] is reserved
for future use.
ADV7183B
Subaddress
Register
Bit Description
0x97
CGMS2
7 6
x x
5
x
Bits
4 3
x x
2
x
1
x
0
x
Comments
x
x
x
x
x
x
x
x
CGMS3[7:4] are
undetermined.
x
x
x
x
x
x
x
x
CCAP1[7] contains parity
bit for byte 0.
x
x
x
x
x
x
x
x
CCAP2[7] contains parity
bit for byte 0.
x
x
x
x
x
x
x
x
Reports the number of
black lines detected at
the top of active video.
Reports the number of
black lines detected in
the bottom half of
active video if subtitles
are detected.
Reports the number of
black lines detected at
the bottom of active
video.
0x9B
Letterbox 1
(Read Only)
CGMS2[7:0]
CGMS data register.
CGMS3[7:0]
CGMS data register.
CCAP1[7:0]
Closed caption data register.
CCAP2[7:0]
Closed caption data register.
LB_LCT[7:0]
Letterbox data register.
0x9C
Letterbox 2
(Read Only)
LB_LCM[7:0]
Letterbox data register.
x x
x
x
x
x
x
x
0x9D
Letterbox 3
(Read Only)
LB_LCB[7:0]
Letterbox data register.
x x
x
x
x
x
x
x
0xB2
CRC
Enable
Write
Register
Reserved.
0
0
(Read Only)
0x98
CGMS3
(Read Only)
0x99
CCAP1
(Read Only)
0x9A
CCAP2
(Read Only)
CRC_ENABLE. Enable CRC checksum
decoded from CGMS packet to
validate CGMSD.
Reserved
0 0
0
1
1
Rev. B | Page 83 of 100
Set as default.
0
Turn off CRC check.
1
CGMSD goes high with
valid checksum.
Set as default.
Notes
This feature examines
the active video at the
start and at the end of
each field. It enables
format detection even
if the video is not
accompanied by a
CGMS or WSS
sequence.
ADV7183B
Subaddress
Register
Bit Description
0xC3
ADC
SWITCH 1
ADC0_SW[3:0]. Manual muxing
control for ADC0.
ADC1_SW[3:0]. Manual muxing
control for ADC1.
0xC4
ADC
SWITCH 2
7 6
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
5
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Bits
4 3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
ADC2_SW[3:0]. Manual muxing
control for ADC2.
Reserved
ADC_SW_MAN_EN. Enable
manual setting of the input signal
muxing.
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
x
x
2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Comments
No connection.
AIN1.
AIN2.
AIN3.
AIN4.
AIN5.
AIN6.
No connection.
No connection.
AIN7.
AIN8.
AIN9.
AIN10.
AIN11.
AIN12.
No connection.
No connection.
No connection.
No connection.
AIN3.
AIN4.
AIN5.
AIN6.
No connection.
No connection.
No connection.
No connection.
AIN9.
AIN10.
AIN11.
AIN12.
No connection.
No connection.
No connection.
AIN2.
No connection.
No connection.
AIN5.
AIN6.
No connection.
No connection.
No connection.
AIN8.
No connection.
No connection.
AIN11.
AIN12.
No connection.
x
0
1
Rev. B | Page 84 of 100
Disable.
Enable.
Notes
SETADC_sw_man_
en = 1.
SETADC_sw_man_
en = 1.
SETADC_sw_man_
en = 1.
ADV7183B
Subaddress
Register
Bit Description
0xDC
Letterbox
Control 1
0xDD
Letterbox
Control 2
LB_TH[4:0]. Sets the threshold
value that determines if a line is
black.
Reserved
LB_EL[3:0]. Programs the end line
of the activity window for LB
detection (end of field).
0xDE
0xDF
0xE0
0xE1
SD Offset
Cb
0xE2
SD Offset
Cr
0xE3
SD Satura
tion Cb
0xE4
SD
Saturation
Cr
NTSC V
Bit Begin
0xE5
7 6
1 0
5
Bits
4 3
2
1
0
Comments
0
1
1
0
0
1
1
0
0
Default threshold for
the detection of black
lines.
Set as default.
LB detection ends with
the last line of active
video on a field,
1100b: 262/525.
Letterbox detection
aligned with the start of
active video,
0100b: 23/286 NTSC.
1
LB_SL[3:0]. Program the start line
of the activity window for LB
detection (start of field).
0 1
0
0
Reserved
Reserved
Reserved
SD_OFF_CB[7:0]. Adjusts the hue
by selecting the offset for the Cb
channel.
SD_OFF_CR[7:0]. Adjusts the hue
by selecting the offset for the Cr
channel.
SD_SAT_CB[7:0]. Adjusts the
saturation of the picture by
affecting gain on the Cb channel.
SD_SAT_CR[7:0]. Adjusts the
saturation of the picture by
affecting gain on the Cr channel.
NVBEG[4:0]. Number of lines after
lCOUNT rollover to set V high.
NVBEGSIGN
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
1 0
0
0
0
0
0
0
1 0
0
0
0
0
0
0
Chroma gain = 0 dB.
1 0
0
0
0
0
0
0
Chroma gain = 0 dB.
0
0
1
0
1
NTSC default (BT.656).
0
Set to low when manual
programming.
Not suitable for user
programming.
No delay.
Additional delay by 1
line.
No delay.
Additional delay by 1
line.
NTSC default (BT.656).
0
1
NVBEGDELE. Delay V bit going
high by one line relative to NVBEG
(even field).
NVBEGDELO. Delay V bit going
high by one line relative to NVBEG
(odd field).
0xE6
NTSC V
Bit End
0
1
0
1
NVEND[4:0]. Number of lines after
lCOUNT rollover to set V low.
NVENDSIGN
0
0
0
1
NVENDDELE. Delay V bit going
low by one line relative to NVEND
(even field).
NVENDDELO. Delay V bit going
low by one line relative to NVEND
(odd field).
0
1
0
1
Rev. B | Page 85 of 100
1
0
Set to low when manual
programming.
Not suitable for user
programming.
No delay.
Additional delay by 1
line.
No delay.
Additional delay by 1
line.
Notes
ADV7183B
Subaddress
Register
Bit Description
0xE7
NTSC F Bit
Toggle
NFTOG[4:0]. Number of lines after
lCOUNT rollover to toggle F signal.
NFTOGSIGN
7 6
5
Bits
4 3
2
1
0
Comments
0
0
1
1
NTSC default.
1
Set to low when manual
programming.
Not suitable for user
programming.
No delay.
Additional delay by 1
line.
No delay.
Additional delay by 1
line.
PAL default (BT.656).
0
Set to low when manual
programming.
Not suitable for user
programming.
No delay.
Additional delay by 1
line.
No delay.
Additional delay by 1
line.
PAL default (BT.656).
1
Set to low when manual
programming.
Not suitable for user
programming.
No delay.
Additional delay by 1
line.
No delay.
Additional delay by 1
line.
PAL default (BT.656).
0
0
1
NFTOGDELE. Delay F transition by
one line relative to NFTOG (even
field).
NFTOGDELO. Delay F transition by
one line relative to NFTOG (odd
field).
0xE8
PAL V Bit
Begin
0
1
0
1
PVBEG[4:0]. Number of lines after
lCOUNT rollover to set V high.
PVBEGSIGN
0
0
1
0
0
1
PVBEGDELE. Delay V bit going
high by one line relative to PVBEG
(even field).
PVBEGDELO. Delay V bit going
high by one line relative to PVBEG
(odd field).
0xE9
PAL V Bit
End
0
1
0
1
PVEND[4:0]. Number of lines after
lCOUNT rollover to set V low.
PVENDSIGN
1
0
1
0
0
1
PVENDDELE. Delay V bit going low
by one line relative to PVEND
(even field).
PVENDDELO. Delay V bit going
low by one line relative to PVEND
(odd field).
0xEA
PAL F Bit
Toggle
0
1
0
1
PFTOG[4:0]. Number of lines after
lCOUNT rollover to toggle F signal.
PFTOGSIGN
0
0
0
1
PFTOGDELE. Delay F transition by
one line relative to PFTOG (even
field).
PFTOGDELO. Delay F transition by
one line relative to PFTOG (odd
field).
0
1
0
1
Rev. B | Page 86 of 100
0
1
Set to low when manual
programming.
Not suitable for user
programming.
No delay.
Additional delay by 1
line.
No delay.
Additional delay by 1
line.
Notes
ADV7183B
Subaddress
Register
Bit Description
0xF4
Drive
Strength
DR_STR_S[1:0]. Select the drive
strength for the sync output
signals.
7 6
5
Bits
4 3
DR_STR_C[1:0]. Select the drive
strength for the clock output
signal.
DR_STR[1:0]. Select the drive
strength for the data output
signals. Can be increased or
decreased for EMC or crosstalk
reasons.
0xF8
0xF9
IF Comp
Control
VS Mode
Control
Reserved
IFFILTSEL[2:0] IF filter selection for
PAL and NTSC
Reserved
EXTEND_VS_MAX_FREQ
0
0
0
1
1
0
1
1
2
1
0
Comments
0
0
0
1
1
0
1
1
0
0
0
0
0
1
Low drive strength (1×).
Medium-low drive
strength (2×).
Medium-high drive
strength (3×).
High drive strength (4×).
Low drive strength (1×).
Medium-low drive
strength (2×).
Medium-high drive
strength (3×).
High drive strength (4×).
Low drive strength (1×).
Medium-low drive
strength (2×).
Medium-high drive
strength (3×).
High drive strength (4×).
No delay.
Bypass mode.
2 MHz
5 MHz
−3 dB
−2 dB
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
0
1
0
0
0
1
1
0
1
1
x x
0 0
0
0
1
EXTEND_VS_MIN_FREQ
0
1
Reserved
0
0
1
1
0 0
0
0 dB.
NTSC filters.
+3.5 dB
+5 dB
6 MHz
+2 dB
+3 dB
+5 dB
PAL filters.
0
0
VS_COAST_MODE[1:0]
−6 dB
−10 dB
Reserved.
3 MHz
−2 dB
−5 dB
−7 dB
Notes
0
Rev. B | Page 87 of 100
0
1
0
1
Limit maximum Vsync
frequency to 66.25 Hz
(475 lines/frame).
Limit maximum Vsync
frequency to 70.09 Hz
(449 lines/frame).
Limit minimum Vsync
frequency to 42.75 Hz
(731 lines/frame).
Limit minimum Vsync
frequency to 39.51 Hz
(791 lines/frame).
Auto coast mode.
50 Hz coast mode.
60 Hz coast mode.
Reserved.
This value sets up the
output coast
frequency.
ADV7183B
I2C PROGRAMMING EXAMPLES
EXAMPLES IN THIS SECTION USE A 28 MHz CLOCK.
Mode 1 CVBS Input (Composite Video on AIN5)
All standards are supported through autodetect, 8-bit, 4:2:2, ITU-R BT.656 output on P15 to P8.
Table 87. Mode 1 CVBS Input
Register Address
0x00
0x15
0x17
0x1D
0x0F
0x3A
0x3D
0x3F
0x50
0x0E
Register Value
0x04
0x00
0x41
0x40
0x40
0x16
0xC3
0xE4
0x04
0x80
0x50
0x52
0x58
0x77
0x7C
0x7D
0x90
0x91
0x92
0x93
0x94
0xCF
0xD0
0xD6
0xE5
0xD5
0xD7
0xE4
0xE9
0xEA
0x0E
0x20
0x18
0xED
0xC5
0x93
0x00
0xC9
0x40
0x3C
0xCA
0xdD
0x50
0x4E
0xDD
0x51
0xA0
0xEA
0x3E
0x3E
0x0F
0x00
Notes
CVBS input on AIN5.
Slow down digital clamps.
Set CSFM to SH1.
Enable 28 MHz crystal.
TRAQ.
Power down ADC 1 and ADC 2.
MWE enable manual window.
BGB to 36.
Set DNR threshold to 4 for flat response.
ADI recommended programming sequence. This sequence must be followed exactly when
setting up the decoder.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Rev. B | Page 88 of 100
ADV7183B
Mode 2 S-Video Input (Y on AIN1 and C on AIN4)
All standards are supported through autodetect, 8-bit, ITU-R BT.656 output on P15 to P8.
Table 88. Mode 2 S-Video Input
Register Address
0x00
0x15
0x3A
0x1D
0x0F
0x3D
0x3F
0x50
0x0E
Register Value
0x06
0x00
0x12
0x40
0x40
0xC3
0xE4
0x04
0x80
0x50
0x52
0x58
0x77
0x7C
0x7D
0x90
0x91
0x92
0x93
0x 94
0xCF
0xD0
0xD6
0xE5
0xD5
0xD7
0xE4
0xE9
0xEA
0x0E
0x20
0x18
0xED
0xC5
0x93
0x00
0xC9
0x40
0x3C
0xCA
0xdD
0x50
0x4E
0xDD
0x51
0xA0
0xEA
0x3E
0x3E
0x0F
0x00
Notes
Y1 = AIN1, C1 = AIN4.
Slow down digital clamps.
Power down ADC 2.
Enable 28 MHz crystal.
TRAQ.
MWE enable manual window.
BGB to 36.
Set DNR threshold to 4 for flat response.
ADI recommended programming sequence. This sequence must be followed exactly when
setting up the decoder.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Rev. B | Page 89 of 100
ADV7183B
Mode 3 525i/625i YPrPb Input (Y on AIN2, PB on AIN3, and PR on AIN6)
All standards are supported through autodetect, 8-bit, ITU-R BT.656 output on P15 to P8.
Table 89. Mode 3 YPrPb Input 525i/625i
Register Address
0x00
0x1D
0x0F
0x3D
0x3F
0x50
0x0E
Register Value
0x0A
0x40
0x40
0xC3
0xE4
0x04
0x80
0x52
0x58
0x77
0x7C
0x90
0x91
0x92
0x93
0x94
0xCF
0xD0
0xD6
0xE5
0xE9
0x0E
0x18
0xED
0xC5
0x93
0xC9
0x40
0x3C
0xCA
0xdD
0x50
0x4E
0xDD
0x51
0x3E
0x00
Notes
Y2 = AIN2, PB2 = AIN3, PR2 = AIN6.
Enable 28 MHz crystal.
TRAQ.
MWE enable manual window.
BGB to 36.
Set DNR threshold to 4 for flat response.
ADI recommended programming sequence. This sequence must be followed exactly when
setting up the decoder.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Rev. B | Page 90 of 100
ADV7183B
Mode 4 CVBS Tuner Input PAL Only on AIN4
8-bit, ITU-R BT.656 output on P15 to P8.
Table 90. Mode 4 Tuner Input CVBS PAL Only
Register Address
0x00
0x07
0x15
0x17
0x1D
0x0F
0x3D
0x3F
0x19
0x3A
0x50
0x0E
Register Value
0x83
0x01
0x00
0x41
0x40
0x40
0xC3
0xE4
0xFA
0x16
0x0A
0x80
0x50
0x52
0x58
0x77
0x7C
0x7D
0x90
0x91
0x92
0x93
0x94
0xCF
0xD0
0xD6
0xE5
0xD5
0xD7
0xE4
0xE9
0xEA
0x0E
0x20
0x18
0xED
0xC5
0x93
0x00
0xC9
0x40
0x3C
0xCA
0xdD
0x50
0x4E
0xDD
0x51
0xA0
0xEA
0x3E
0x3E
0x0F
0x00
Notes
CVBS AIN4 Force PAL only mode.
Enable PAL autodetection only.
Slow down digital clamps.
Set CSFM to SH1.
Enable 28 MHz crystal
TRAQ
MWE enable manual window
BGB to 36
Stronger dot crawl reduction.
Power down ADC 1 and ADC 2.
Set higher DNR threshold.
ADI recommended programming sequence. This sequence must be followed exactly when
setting up the decoder.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Rev. B | Page 91 of 100
ADV7183B
EXAMPLES USING 27 MHz CLOCK
Mode 1 CVBS Input (Composite Video on AIN5)
All standards are supported through autodetect, 8-bit, 4:2:2, ITU-R BT.656 output on P15 to P8.
Table 91. Mode 1 CVBS Input
Register Address
0x00
0x15
0x17
0x3A
0x50
0x0E
Register Value
0x04
0x00
0x41
0x16
0x04
0x80
0x50
0x52
0x58
0x77
0x7C
0x7D
0xD0
0xD5
0xD7
0xE4
0xE9
0xEA
0x0E
0x20
0x18
0xED
0xC5
0x93
0x00
0x48
0xA0
0xEA
0x3E
0x3E
0x0F
0x00
Notes
CVBS input on AIN5.
Slow down digital clamps.
Set CSFM to SH1.
Power down ADC 1 and ADC 2.
Set DNR threshold to 4 for flat response.
ADI recommended programming sequence. This sequence must be followed exactly when
setting up the decoder.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting
Recommended setting.
Recommended setting.
Mode 2 S-Video Input (Y on AIN1 and C on AIN4)
All standards are supported through autodetect, 8-bit, ITU-R BT.656 output on P15 to P8.
Table 92. Mode 2 S-Video Input
Register Address
0x00
0x15
0x3A
0x50
0x0E
Register Value
0x06
0x00
0x12
0x04
0x80
0x50
0x52
0x58
0x77
0x7C
0x7D
0xD0
0xD5
0xD7
0xE4
0xE9
0xEA
0x0E
0x20
0x18
0xED
0xC5
0x93
0x00
0x48
0xA0
0xEA
0x3E
0x3E
0x0F
0x00
Notes
Y1 = AIN1, C1 = AIN4.
Slow down digital clamps.
Power down ADC 2.
Set DNR threshold to 4 for flat response.
ADI recommended programming sequence. This sequence must be followed exactly when
setting up the decoder.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting
Recommended setting.
Recommended setting.
Rev. B | Page 92 of 100
ADV7183B
Mode 3 525i/625i YPrPb Input (Y on AIN2, PB on AIN3, and PR on AIN6)
All standards are supported through autodetect, 8-bit, ITU-R BT.656 output on P15 to P8.
Table 93. Mode 3 YPrPb Input 525i/625i
Register Address
0x00
0x50
0x0E
Register Value
0x0A
0x04
0x80
0x52
0x58
0x77
0x7C
0x7D
0xD0
0xD5
0xE4
0xE9
0x0E
0x18
0xED
0xC5
0x93
0x00
0x48
0xA0
0x3E
0x3E
0x00
Notes
Y2 = AIN2, PB2 = AIN3, PR2 = AIN6.
Set DNR threshold to 4 for flat response.
ADI recommended programming sequence. This sequence must be followed exactly when
setting up the decoder.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting
Recommended setting.
Mode 4 CVBS Tuner Input PAL Only on AIN4
8-bit, ITU-R BT.656 output on P15 to P8.
Table 94. Mode 4 Tuner Input CVBS PAL Only
Register Address
0x00
0x07
0x15
0x17
0x19
0x3A
0x50
0x0E
Register Value
0x83
0x01
0x00
0x41
0xFA
0x16
0x0A
0x80
0x50
0x52
0x58
0x77
0x7C
0x7D
0xD0
0xD5
0xD7
0xE4
0xE9
0xEA
0x0E
0x20
0x18
0xED
0xC5
0x93
0x00
0x48
0xA0
0xEA
0x3E
0x3E
0x0F
0x00
Notes
CVBS AIN4 Force PAL only mode.
Enable PAL autodetection only.
Slow down digital clamps.
Set CSFM to SH1.
Stronger dot crawl reduction.
Power down ADC 1 and ADC 2.
Set higher DNR threshold.
ADI recommended programming sequence. This sequence must be followed exactly when
setting up the decoder.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting.
Recommended setting
Recommended setting.
Recommended setting.
Rev. B | Page 93 of 100
ADV7183B
PCB LAYOUT RECOMMENDATIONS
The ADV7183B is a high precision, high speed, mixed-signal
device. To achieve the maximum performance from the part, it
is important to have a PCB board with a good layout. This
section provides guidelines for designing a board using the
ADV7183B.
Figure 42. PCB Ground Layout
Experience shows that the noise performance is the same or
better with a single ground plane. Using multiple ground planes
can be detrimental because each separate ground plane is
smaller, and long ground loops can result.
ANALOG INTERFACE INPUTS
Care should be taken when routing the inputs on the PCB.
Track lengths should be kept to a minimum, and 75 Ω trace
impedances should be used when possible. Trace impedances
other than 75 Ω also increase the chance of reflections.
In some cases, using separate ground planes is unavoidable. For
those cases, it is recommended to place a single ground plane
under the ADV7183B. The location of the split should be under
the ADV7183B. For this case, it is even more important to place
components wisely because the current loops will be much
longer (current takes the path of least resistance). An example
of a current loop: power plane to ADV7183B to digital output
trace to digital data receiver to digital ground plane to analog
ground plane.
POWER SUPPLY DECOUPLING
It is recommended to decouple each power supply pin with
0.1 μF and 10 nF capacitors. The fundamental idea is to have a
decoupling capacitor within about 0.5 cm of each power pin.
Also, avoid placing the capacitor on the opposite side of the PC
board from the ADV7183B, as doing so interposes resistive vias
in the path. The decoupling capacitors should be located
between the power plane and the power pin. Current should
flow from the power plane to the capacitor to the power pin. Do
not make the power connection between the capacitor and the
power pin. Placing a via underneath the 100 nF capacitor pads,
down to the power plane, is generally the best approach (see
Figure 41).
269H
VDD
100nF
Place the PLL loop filter components as close as possible to the
ELPF pin. Do not place any digital or other high frequency
traces near these components. Use the values suggested in
Figure 46 with tolerances of 10% or less.
271H
Try to minimize the trace length the digital outputs have to
drive. Longer traces have higher capacitance, which requires
more current, which causes more internal digital noise. Shorter
traces reduce the possibility of reflections.
VIA TO GND
04997-041
GND
PLL
DIGITAL OUTPUTS (BOTH DATA AND CLOCKS)
VIA TO SUPPLY
10nF
DIGITAL
SECTION
04997-042
ADV7183B
ANALOG
SECTION
Figure 41. Recommended Power Supply Decoupling
It is very important to maintain low noise and good stability of
PVDD. Careful attention must be paid to regulation, filtering,
and decoupling. It is highly desirable to provide separate
regulated supplies for each of the analog circuitry groups
(AVDD, DVDD, DVDDIO, and PVDD).
Some graphic controllers use substantially different levels of
power when active (during active picture time) and when idle
(during horizontal and vertical sync periods). This can result in
a measurable change in the voltage supplied to the analog
supply regulator, which can, in turn, produce changes in the
regulated analog supply voltage. This can be mitigated by
regulating the analog supply, or at least PVDD, from a different,
cleaner power source, such as a 12 V supply.
It is also recommended to use a single ground plane for the
entire board. This ground plane should have a space between
the analog and digital sections of the PCB (see Figure 42).
Adding a 30 Ω to 50 Ω series resistor can suppress reflections,
reduce EMI, and reduce the current spikes inside the ADV7183B.
If series resistors are used, place them as close as possible to the
ADV7183B pins. However, try not to add vias or extra length to
the output trace to make the resistors closer.
If possible, limit the capacitance that each of the digital outputs
drive to less than 15 pF. This can easily be accomplished by
keeping traces short and by connecting the outputs to only one
device. Loading the outputs with excessive capacitance increases
the current transients inside the ADV7183B, creating more
digital noise on its power supplies.
DIGITAL INPUTS
The digital inputs on the ADV7183B are designed to work with
3.3 V signals, and are not tolerant of 5 V signals. Extra components are needed if 5 V logic signals are required to be applied
to the decoder.
270H
Rev. B | Page 94 of 100
ADV7183B
ANTIALIASING FILTERS
CRYSTAL LOAD CAPACITOR VALUE SELECTION
For inputs from some video sources that are not bandwidth
limited, signals outside the video band can alias back into the
video band during A/D conversion and appear as noise on the
output video. The ADV7183B oversamples the analog inputs by
a factor of 4. This 54 MHz sampling frequency reduces the
requirement for an input filter; for optimal performance, it is
recommended that an antialiasing filter be used. The
recommended low cost circuit for implementing this buffer and
filter circuit for all analog input signals is shown in Figure 45.
27H
The buffer is a simple emitter-follower using a single npn
transistor. The antialiasing filter is implemented using passive
components. The passive filter is a third-order Butterworth
filter with a −3 dB point of 9 MHz. The frequency response of
the passive filter is shown in Figure 43. The flat pass band up to
6 MHz is essential. The attenuation of the signal at the output of
the filter due to the voltage divider of R24 and R63 is
compensated for in the ADV7183B part by using the automatic
gain control. The ac-coupling capacitor at the input to the
buffer creates a high-pass filter with the biasing resistors for the
transistor. This filter has a cutoff of
Figure 44 shows an example of a reference clock circuit for the
ADV7183B. Special care must be taken when using a crystal
circuit to generate the reference clock for the ADV7183B. Small
variations in reference clock frequency can cause autodetection
issues and impair the ADV7183B performance.
274H
Load capacitor values are dependant on crystal attributes.
The load capacitance given in a crystal data sheet specifies the
parallel resonance frequency within the tolerance at 25°C.
Therefore, it is important to design a circuit that matches the
load capacitance to achieve the frequency stipulated by the
manufacturer. For accurate crystal circuit design and
optimization, an applications note on crystal design
considerations is available for more information.
273H
XTAL
XTAL1
C1
47pF
XTAL
28.63636MHz
C2
47pF
04997-047
R = 1MΩ
Figure 44. Crystal Circuit
Follow these guidelines to ensure correct operation:
{2 × π × (R39||R89) × C93}–1 = 0.62 Hz
It is essential that the cutoff of this filter be less than 1 Hz to
ensure correct operation of the internal clamps within the part.
These clamps ensure the video stays within the 5 V range of the
op amp used.
•
Use the correct frequency crystal, which is 28.63636 MHz.
Tolerance is 50 ppm or higher.
•
Use a parallel-resonant crystal.
•
Place a 1 MΩ shunt resistor across pins XTAL and
XTAL1, as is shown in Figure 44.
275H
0
•
–20
•
–40
–60
–80
where:
Cpg is the pin-to-ground capacitance, approximately 4 pF
to 10 pF.
CS is the PCB stray capacitance, approximately 2 pF to
3 pF.
300k
1M
3M
10M
30M
FREQUENCY (Hz)
100M
300M
1G
04997-043
–100
–120
100k
Know the CLOAD for the crystal part number selected. The
value of Capacitor C1 and Capacitor C2 must match CLOAD
for the specific crystal part number in the user’s system.
Use the following guideline to find CLOAD:
C1 = C2 = C
C = 2(CLOAD − CS) − Cpg
Figure 43. Third-Order Butterworth Filter Response
For Example,
CLOAD = 30 pF
C = 2(30 − 3) − 4
= 50 pF
Therefore, two 47 pF capacitors may be selected for C1
and C2.
Rev. B | Page 95 of 100
ADV7183B
TYPICAL CIRCUIT CONNECTION
Figure 45 and Figure 46 show examples of how to connect the ADV7183B video decoder. For a detailed schematic diagram for the
ADV7183B, refer to the ADV7183B evaluation note.
27H
AVDD_5V
BUFFER
C93
100μF
R39
4.7kΩ
R38
75Ω
R53
56Ω
R89
5.6kΩ
R43
0Ω
C
B
Q6
E
R24
470Ω
FILTER
L10
12μH
C95
22pF
AGND
C102
10pF
R63
820Ω
04997-044
276H
Figure 45. ADI Recommended Antialiasing Circuit for All Input Channels
Rev. B | Page 96 of 100
ADV7183B
FERRITE BEAD
DVDDIO
(3.3V)
33μF
PVDD
(1.8V)
33μF
0.1μF
AGND
10μF
0.1μF
AGND
AGND
FERRITE BEAD
33μF
10μF
AIN7
100nF
DVDDIO
AIN1
DGND
AVDD
DGND
100nF
ANTI-ALIAS
FILTER CIRCUIT
0.1μF
PVDD
DGND
ANTI-ALIAS
FILTER CIRCUIT
AGND
DVDD
AGND DGND
AIN8
100nF
AIN3
ANTI-ALIAS
FILTER CIRCUIT
100nF
Pb
ANTI-ALIAS
FILTER CIRCUIT
100nF
AIN9
ADV7183B
AIN4
AIN10
AIN5
ANTI-ALIAS
FILTER CIRCUIT
AIN11
100nF
0.01μF POWER SUPPLY
DECOUPLING FOR
EACH POWER PIN
DGND
0.01μF POWER SUPPLY
DECOUPLING FOR
EACH POWER PIN
AGND
0.01μF POWER SUPPLY
DECOUPLING FOR
EACH POWER PIN
AGND
0.01μF POWER SUPPLY
DECOUPLING FOR
EACH POWER PIN
DGND
P0
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
AIN2
ANTI-ALIAS
FILTER CIRCUIT
Pr
CBVS
DGND
10μF
33μF
DVDD
(1.8V)
Y
0.1μF
AGND
AGND
FERRITE BEAD
AVDD
(3.3V)
S-VIDEO
10μF
DGND
DGND
FERRITE BEAD
MULTIFORMAT
PIXEL
PORT
P15–P8 8-BIT ITU-R BT.656 PIXEL DATA @ 27MHz
P7–P0 Cb AND Cr 16-BIT ITU-R BT.656 PIXEL DATA @ 13.5MHz
P15–P8 Y 16-BIT ITU-R BT.656 PIXEL DATA @ 13.5MHz
75Ω
75Ω
75Ω
75Ω
75Ω
75Ω
AIN6
RECOMMENDED ANTI-ALIAS FILTER
CIRCUIT IS SHOWN IN FIGURE 45 ON THE
PREVIOUS PAGE. THIS CIRCUIT INCLUDES
A 75Ω TERMINATION RESISTOR, INPUT
BUFFER AND ANTI-ALIASING FILTER.
AIN12
AGND
AGND
CAPY1
+
0.1μF
10μF
0.1μF
1nF
CAPY2
LLC1
27MHz OUTPUT CLOCK
LLC2
13.5MHz OUTPUT CLOCK
0.1μF
AGND
CAPC1
+
10μF
0.1μF
1nF
CAPC2
AGND
+
OE
CML
10μF
0.1μF
10μF
+
OUTPUT ENABLE I/P
REFOUT
0.1μF
INTERRUPT O/P
INTRQ
CAPACITOR VALUES
ARE DEPENDANT ON
XTAL ATTRIBUTES.
AGND
1MΩ
XTAL
47pF
28.63636MHz
XTAL1
DGND
SFL
SFL O/P
HS
HS O/P
VS
VS O/P
FIELD
FIELD O/P
47pF
DVDDIO
DGND
SELECT I2C
ADDRESS
ALSB
DVDDIO
2kΩ
ELPF
2kΩ
1.69kΩ
100Ω
SCLK
MPU INTERFACE
CONTROL LINES
100Ω
10nF
82nF
SDA
PVDD
DVDDIO
4.7kΩ
RESET
RESET
100nF
DGND
AGND
DGND
AGND
DGND
Figure 46. Typical Connection Diagram
Rev. B | Page 97 of 100
04997-045
DVSS
DVDDIO
ADV7183B
OUTLINE DIMENSIONS
0.75
0.60
0.45
16.20
16.00 SQ
15.80
1.60
MAX
61
80
60
1
PIN 1
14.20
14.00 SQ
13.80
TOP VIEW
(PINS DOWN)
1.45
1.40
1.35
0.15
0.05
0.20
0.09
7°
3.5°
0°
0.10 MAX
COPLANARITY
SEATING
PLANE
VIEW A
20
41
40
21
VIEW A
0.65
BSC
LEAD PITCH
ROTATED 90° CCW
0.38
0.32
0.22
COMPLIANT TO JEDEC STANDARDS MS-026-BEC
Figure 47. 80-Lead Low Profile Quad Flat Package [LQFP]
(ST-80-2)
Dimensions shown in millimeters
ORDERING GUIDE
Model 1
ADV7183BKSTZ 2
ADV7183BBSTZ2
EVAL-ADV7183BEB
16F
17F
278H
Temperature Range
0°C to +70°C
–40°C to +85°C
Package Description
80-lead Low Profile Quad Flat Package (LQFP)
80-lead Low Profile Quad Flat Package (LQFP)
Evaluation Board
1
Package Option
ST-80-2
ST-80-2
The ADV7183B is a Pb-free, environmentally friendly product. It is manufactured using the most up-to-date materials and processes. The coating on the leads of each
device is 100% pure Sn electroplate. The device is suitable for Pb-free applications and can withstand surface-mount soldering at up to 255°C (±5°C). In addition, the
ADV71893B is backward-compatible with conventional SnPb soldering processes. This means the electroplated Sn coating can be soldered with Sn/Pb solder pastes at
conventional reflow temperatures of 220°C to 235°C.
2
Z = Pb-free part.
Rev. B | Page 98 of 100
ADV7183B
NOTES
Rev. B | Page 99 of 100
ADV7183B
NOTES
Purchase of licensed I2C components of Analog Devices or one of its sublicensed Associated Companies conveys a license for the purchaser under the Philips I2C Patent
Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips.
© 2005 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D04997–0–9/05(B)
Rev. B | Page 100 of 100
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