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User's Guide
SLEU084 – February 2007
DEM-DAI1780/1781/1782EVM
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2
Contents
...........................................................................................
Schematic and Printed-Circuit Board
............................................................
Demonstration Software
..........................................................................
List of Figures
DEM-DAI1780/1781/1782 Block Diagram
.......................................................
DEM-DAI/DAC Daughtercard Sockets
...........................................................
DEM-DAI/DAC Connector and Regulator
DEM-DAI/DAC Digital Audio Interface
.......................................................
...........................................................
DEM-PCM1780/1781/1782
........................................................................
DEM-DAI/DAC Top View
.........................................................................
.........................................................................
.....................................................................
DEM-PCM1780/1781/1782 Silkscreen
DEM-PCM1780/1781/1782 Top View
.........................................................
..........................................................
DEM-PCM1780/1781/1782 Bottom View
......................................................
List of Tables
Digital Audio Receiver Configuration
.............................................................
JP001 Jumper Configuration
......................................................................
Digital Audio Source Selection
....................................................................
Windows is a trademark of Microsoft Corporation.
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Description
1 Description
The DEM-DAI1780/1781/1782 is a complete evaluation platform for the PCM1780/1781/1782 24-bit,
192-kHz stereo audio digital-to-analog converter (DAC). All necessary connectors and circuitry are provided for interfacing to audio test systems and commercial audio equipment.
1.1
Block Diagram
ML MC MDI RST MDO GND GND V
CC
AV
CC
- GND AV
CC
+
3.3V
Regulator
SW006
V
CC
Format Control
M2, M1, M0
Opt
Coax
Digital
Audio
Receiver
DAI
(BUS)
Select
JUMPER
SCKI
CLKO
BCK
LRCK
DATA
PCM1780
PCM1781
PCM1782
L/R CH 2 nd
Order LPF
OPA2134
L-Channel
R-Channel
External I/F
CN004
SW001
Figure 1. DEM-DAI1780/1781/1782 Block Diagram
1.2
Features
•
Complete evaluation platform for the PCM1780/1781/1782 stereo audio DAC.
•
Onboard low-pass filters for the left and right channels.
•
Easy configuration using onboard switches and jumpers.
•
96-kHz digital audio receiver accepts S/PDIF inputs.
•
Centronics connector for interfacing to a PC parallel port (required for the demonstration software)
•
Demonstration software for programming the PCM1780/1781/1782’s internal registers (requires a PC running Microsoft Windows™ 3.1, 95, 98, 2000, XP)
•
Power-supply requirements: +5 V, +15 V, and –15 V
1.3
Hardware Description
1.3.1
Power Supplies
The DEM-DAI1780/1781/1782 evaluation fixture requires three power supplies for operating the
PCM1780/1781/1782, the digital support circuitry, and the low-pass filter operational amplifier. Standard banana jacks are provided for all power-supply connections.
Connector CN054 provides the +5-V supply required for VCC. It is used to power the
PCM1780/1781/1782, as well as the digital audio receiver (U002) and associated logic (U003 and U004).
Connectors CN051 (AVCC+) and CN (AVCC-) are used to power the OPA2134 dual operational amplifier
(U101) that performs the DAC output low-pass filter function. AVCC+ can be set from +5 V to +18 V while
AVCC- can be set from –5 V to –18 V.
Ground connections are made at connectors CN052 and CN055. Both are connected to the ground plane of the DEMDAI1780/1781/1782 board.
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1.3.2
Description
Analog Output
The left and right audio outputs are available at RCA jacks CN104 and CN105, respectively. The outputs are taken from the low-pass filter, which has a gain of 2. The low-pass filter can be configured for one of two cutoff frequencies: 54 kHz or 108 kHz. Typically, the 54-kHz cutoff frequency is used for all measurements.
For f-3dB = 54 kHz, jumpers JP101 through JP106 must all be installed.
For f-3dB = 108 kHz, jumpers JP101 through JP106 must all be removed.
1.3.3
Digital Audio Interface
A digital audio receiver (U002) is provided for easy connection to S/PDIF and optical signal sources, including audio test systems (Audio Precision, Rhode & Schwarz) and commercial audio equipment (CD and DVD players). The receiver can operate at rates up to a 96kHz with 24-bit audio data.
Switches SW001 through SW003 are used to set the receiver output data format, as shown in
shows the jumper configuration for JP001 for normal operation.
SW001
L
L
H
L
Table 1. Digital Audio Receiver Configuration
SW002
L
H
L
H
SW003
L
L
H
H
Receiver Output Data Format
16- to 24-bit left-justified
16- to 24-bit l
2
S
16-bit right-justified (or standard)
18-bit right-justified (or standard)
JP001 Jumper
CLKO
SCLK
GND
BCK
BCK (L Just)
LRCK
DATA
Table 2. JP001 Jumper Configuration
(1)
16-Bit Right-
Justified Format
X
O
O
O
NC
O
O
16-Bit Right-
Justified Format
X
O
O
O
NC
O
O
16- to 24-Bit
I
2
S Format
X
O
O
O
NC
O
O
16- to 24-Bit
Left-Justified Format
X
O
O
NC
NC
O
O
(1)
O = Install Jumper, NC = Remove Jumper, X = Don’t Care
Switch SW004 is a normally open, momentary-contact pushbutton switch used to reset the digital audio receiver when necessary.
The demonstration board also supports direct interfacing to audio decoders and signal processors via connector CN004 (unpopulated). SCLK, BCK, LRCK, and DATA are available and buffered by U005. In addition, +5 V (VCC) and Ground are available at CN004. Switch SW005 is used to select between the digital audio receiver and connector CN004 as the source of the audio interface.
shows the available switch settings.
SW005 Setting
INT
EXT
Table 3. Digital Audio Source Selection
Source Selection
Digital audio receiver (U002)
Connector CN004 via buffer U005
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Description
1.3.4
DIP-Switch Configuration
Switch SW006 is not used for the PCM1780/1781/1782. It is included for future products that can be compatible with this demonstration board. All switch elements must be set to the OFF position for the
PCM1780/ 1781/ 1782.
1.3.5
Connector to PC Parallel Port / Host
The evaluation fixture includes a Centronics connector, CN003, that is used to connect to a PC parallel port or an alternative host controller. This connector is used to access the serial control port of the
PCM1780/1781/1782. The serial control port is used to program the PCM1780/1781/1782's internal registers. A standard printer cable is used to connect CN003 of the evaluation fixture to a PC parallel port.
The port signals are buffered using U006.
1.3.6
Operation Controls for PCM1781
SW001 on the daughtercard are operating controls for the PCM1781.
SW001: Data format select
R/J-16 = 16-bit right-justified format
I 2 S = 16- to 24-bit, I 2 S format
SW006 on the DAI/DAC motherboard is used as operating control for the PCM1781.
ML, MC/SW006
MC
LOW
LOW
HIGH
HIGH
ML
LOW
HIGH
LOW
HIGH
De-emphasis
OFF
ON fs = 48 kHz
ON fs = 44.1 kHz
ON fs = 32 kH
MD/SW006 MUTE CONTROL
LOWMUTE OFF
HIGHMUTE ON
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Schematic and Printed-Circuit Board
Schematic and Printed-Circuit Board
This section presents the DEM-DAI/DAC and the DEM-PCM1780/1781/1782 printed-circuit boards and schematics.
2.1
DEM-DAI/DAC Schematics
V
DD
C101
10uF/16V
RST-
MDO
MDI
MC
ML
CLKO
SCLK
GND
BCK
LRCK
DATA
CN103
FFC-2BMEP1
ZFGL
ZFGR
V
CC
Zero Flag R-ch
Zero Flag L-ch
V
DD
V
DD
GND
GND
RESET-
MDO
MDI
MC
ML
GND
GND
CLKO
SCLK
GND
BCK
LRCK
DATA
GND
CN101
XB-3-7-20
CN102
XB-3-7-20
(NC)
(NC)
(NC)
V
OUT
L
GND
GND
V
OUT
R
(NC)
V
CC
V
CC
GND
GND
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
GND
GND
C102
10uF/16V
JP101
R101
8.2k
C103
1200pF
R102
8.2k
C104
1200pF
JP102
JP103
R105 15k
C109
120pF JP105
R103
1k
C105
1200pF
3
2
C107 120pF
1
4
R107
100
U101
OPA2134A
1/2
Avcc+
C111
10uF/16V
C112
10uF/16V
CN104
RCA pj
JP104
R106 15k
Avcc-
C110
120pF
JP106
R104
1k
C106
1200pF
5
6
C108 120pF
8
7
R108
100
U101
OPA2134A
2/2
CN105
RCA pj
Figure 2. DEM-DAI/DAC Daughtercard Sockets
CN056 B2P-VH
2 1
V
DD
CN055 banana jack
(black)
CN054 banana jack
(red)
CN053 CN052 CN051 banana jack
(blue) banana jack banana jack
(green) (orange)
AV
CC
+
CN057
V
CC U051
REG1117-3.3
2 OUT IN 3
GND
1
C051
0.1uF
C056
10uF
/16V
C055
0.1uF
C052
100uF
/16V
C053
100uF
/16V
Figure 3. DEM-DAI/DAC Connector and Regulator
C054
100uF
/16V
AV
CC
-
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Schematic and Printed-Circuit Board
V
CC
V
DD
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
CN003
57LE-40360-7700(D3)
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
C014 0.1uF
SW006
DSS104
1
2
3
4
RA001
47k x5
U006
74VHC244
[RST-]
[MDO]
[MDI]
[MC]
[ML]
6
7
4
5
8
9
1
2
3
10
GND
V
CC
20
19
18
13
12
11
17
16
15
14
RST-
MDO
MDI
MC
ML
(L001)
2 4 5 6
CN001
RCA pj
U001
1
C004
0.1uF
R001
75
C002
0.01uF
C003
10uF
/16V
C001
0.01uF
C005
10uF/16V
C006
0.1uF
DAI select
INT(CS8414)
SW005
FT2D-2M
U002
1
C
2
Cd/F1
3
Cc/F0
4
Cb/E2
5
Ca/E1
6
C0/E0
7
VD+
8
DGND
9
RXP
10
RXN
11
FSYNC
12
SCK
13
CS12/FCK
14
U
VERF
28
Ce/F2
27
SDATA
26
ERF
25
M1
24
M0
23
VA+
22
AGND
21
FILT
20
MCK
19
M2
18
M3
17
SEL
16
CBL
15
C013 0.1uF
CN002
FFC-2BMEP1
C008
0.1uF
C007
10uF
/16V
R002
470
C009
0.068uF
[BCK]
1
2
3
4
5
6
7
GND
C011 0.1uF
U004 74HC32
V
CC
14
13
12
9
8
11
10
R003
47k
D001
1SS133
R004
470
SW004
FP1F
-2M
C012
10uF/16V
3
2
1
C010 0.1uF
U003 74HC14
V
CC
14
13
12
4
5
6
7
GND
9
8
11
10
1 2 3 4 5
[e-SCLK]
[e-BCK]
[e-LRCK]
[e-DATA]
6 7 8
EXT
1
2
[SCLK]
3
[BCK]
6
[LRCK] 7
4
5
[DATA]
8
9
10
GND
V
CC
20
19
15
14
13
12
11
18
17
16
[SCLK]
[BCK]
[LRCK]
(FIL001)
(C016)
3 IN OUT 2
0.1uF
GND
1
9
U005
74VHC244
10 11 (12) (13)
(C015)
100uF/16V
14 15 16 17 18 19 20 21 22 23 24
[DATA]
(CN004)
FFC-48BMEP1
JP001
FFC-14BMEP1
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
SW001
FT1D-2M
SW002
FT1D-2M
[CLKO]
[SCLK]
[GND]
[BCK]
[BCK(INV)]
[LRCK]
[DATA]
SW003
FT1D-2M
CLKO
SCLK
GND
BCK
LRCK
DATA
Figure 4. DEM-DAI/DAC Digital Audio Interface
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Schematic and Printed-Circuit Board
2.2
DEM-PCM1780/1781/1782 Daughtercard Schematics
This daughtercard is a common board for both the PCM1680 (8ch DAC) and the PCM1780/1781/1782; both footprints are the same.
The schematics show an 8-channel version.
ZFGR
ZFGL
SW001
FT1D-2M
CN001
GND
GND
C001
0.1uF
C002
10uF/16V
V
CC
V
CC
GND
GND
SCLK
GND
BCK
LRCK
DATA
GND
MD
MC
ML
GND
GND
CN004
Through Hole x20 dia.:0.85mm
pitch:2.54mm
GND
SCKI
SCKO
GND
BCK
LRCK
DIN1
DIN2
DIN3
DIN4
R001
4.7k
C004
10uF/16V
C003
0.1uF
1
ZERO1
2
MS/ADR
3
MD/SCL
4
MD/SDA
5
SCK
6
DATA12
7
BCK
8
LRCK
9
V
DD
10
DGND
11
DATA34
12
DATA56
13
DATA78
14
MSEL
U001
ZERO2 28
V
OUT
1
V
OUT
2
V
COM
25
AGND 24
27 C009
26
0.1uF
V
CC
23
V
OUT
3 22
V
OUT
4
V
OUT
5
21 C007
20
0.1uF
V
OUT
6 19
AGND
18
V
CC
17
V
OUT
7
V
OUT
8
16
C005
15
0.1uF
C011
10uF/16V
C010
10uF/16V
C013
10uF/16V
C008
10uF/16V
C015
10uF/16V
C017
10uF/16V
C006
10uF
/16V
C012
10uF/16V
C014
10uF/16V
C016
10uF/16V
C018
10uF/16V
CN002
V
OUT
5
V
OUT
6
GND
V
OUT
7
V
OUT
8
GND
V
OUT
1
V
OUT
2
GND
V
OUT
3
V
OUT
4
GND
V
OUT
L
GND
GND
V
OUT
R
GND
GND
Through Hole x20 dia.:0.85mm
pitch:2.54mm
CN003
Figure 5. DEM-PCM1780/1781/1782
2.3
DEM-DAI/DAC Parts List
Qty Ref. No.
2 C001,C002
4 C004, C006, C008,
C016,C051
Type
Polyester Film Capacitor
Polyester Film Capacitor
1 C009
5 C010, C011, C013,
C014,C055
Polyester Film Capacitor
Ceramic Capacitor
5 C003,C005,C007,C111,C112 AL EL Capacitor
3 C015, C052–C054 AL EL Capacitor
2 C101, C102
4 C103–C106
4 C107–C110
1 C012
1 C056
1 CN003
3 CN002, CN057, CN103
1 CN105
1 CN104
1 CN001
1 CN051
AL EL Capacitor
Polypropylene Capacitor
Polypropylene Capacitor
AL EL Capacitor
Tantalum Capacitor
Centronics
2 pin Connector
RCA Connector (red)
RCA Connector (white)
RCA Connector (yellow)
Banana Jack (orange)
Model
AMFF0050J103
AMFF0050J104
AMFF0050J683
D55Y5V1H104Z51
Value
0.01uF, J
0.1
µ
F, J
0.068
µ
F, J
0.1
µ
F
ROA-16V100M
ROA-16V101M
R3A-16V100M
APSF0100J122
APSF0100J121
SME16VB10M
DN1C100M1S
57LE40360-7700(D3)
FFC-2BMEP1
LPR6520-0802
LPR6520-0803
LPR6520-0804
T-45
10
µ
F/16 V
100
µ
F/16 V
10
µ
F/16 V
1200pF
120pF
10
µ
F/16 V
10
µ
F/16V
Manufacturer
NISSEI
NISSEI
NISSEI
NEC
ELNA
ELNA
ELNA
NISSEI
NISSEI
Nippon Chemi Con
NEC
DAIICHI DENSHI
HONDA TSUSHIN
SMK
SMK
SMK
SATO PARTS
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Schematic and Printed-Circuit Board
Qty Ref. No.
1 CN052
1 CN053
1 CN054
1 CN055
1 CN056
2 CN101,CN102
1 D001
1 JP001
6 JP101–JP106
1 R001
2 R107, R108
2 R002, R004
2 R103, R104
2 R101, R102
2 R105, R106
1 R003
1 RA001
1 U001
1 U002
1 U003
1 U004
2 U005, U006
1 U051
1 U101
3 SW001, SW002, SW003
1 SW004
1 SW005
1 SW006
4
Type
Banana Jack (green)
Banana Jack (blue)
Banana Jack (red)
Banana Jack (black)
VH Connector 2 PIN
Connector 20 PIN
Diode
14 pin Connector
2 pin Connector
Model
T-45
T-45
T-45
T-45
B2P-VH
XB-3-7-20
1SS133
FFC-14BMEP1
FFC-2BMEP1
1/4W Resistor
1/4W Resistor
1/4W Resistor
1/4W Resistor
1/4W Resistor
SN14C2C
SN14C2C
SN14C2C
SN14C2C
SN14C2C
1/4W Resistor
1/4W Resistor
Resistor Array
SN14C2C
SN14C2C
M6-1-473J
TOSLINK Optical Connector TORX179P
Digital Audio I/F Receiver IC CS8414-CS
Logic IC
Logic IC
Logic IC
Regulator IC
IC Socket DIP 8 pin
DIP Switch
Push Switch
DIP Switch
DIP Switch
Spacer
TC74VHC14AF
TC74HCT32AF
TC74VHC244F
REG1117-3.3
100-008-000
FT1D-2M
FP1F-2M
FT2D-2M
DSS104
AR-325B
2.4
DEM-PCM1780/1781/1782 Parts List
Qty Ref. No.
3 C001, C007, C009
5 C002, C008, C010–C012
1 R001
1 SW001
1 U001
Type
Chip Ceramic
Capacitor(2125)
AL EL Capacitor
1/4W Resistor
DIP Switch
Logic IC
Value Manufacturer
SATO PARTS
SATO PARTS
SATO PARTS
SATO PARTS
J.S.T. Connector
MAC8
ROHM
HONDA TSUSHIN
HONDA TSUSHIN
75[
Ω
], F, 1/4W KOA
100[
Ω
], F, 1/4W KOA
470[
Ω
], F, 1/4W KOA
1k[
Ω
], F, 1/4W KOA
8.2k[
Ω
], F, 1/4W KOA
15k[
Ω
], F, 1/4W KOA
47k[
Ω
], F, 1/4W KOA
47k[
Ω
] x5 BI
TOSHIBA
CIRRUS
TOSHIBA
TOSHIBA
TOSHIBA
Burr-Brown
3M
FUJISOKU
FUJISOKU
FUJISOKU
FUJISOKU
HIROSUGI KEIKI
Model Value
GRM40F104Z50PT 0.1
µ
F
R3A-16V100M
SN14C2C-4.7k
FT1D-2M
PCM1780
Ω
F
10
µ
F/16V
4.7k
Ω
Manufacture
MURATA
ELNA
KOA
FUJISOKU
TI
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2.5
DEM-DAI/DAC Printed-Circuit Board
Schematic and Printed-Circuit Board
Figure 6. DEM-DAI/DAC Silkscreen
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Figure 7. DEM-DAI/DAC Top View
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Schematic and Printed-Circuit Board
Figure 8. DEM-DAI/DAC Bottom View
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2.6
DEM-PCM1780/1781/1782 Daughtercard Printed-Circuit Board
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Figure 9. DEM-PCM1780/1781/1782 Silkscreen
12 DEM-DAI1780/1781/1782EVM
Figure 10. DEM-PCM1780/1781/1782 Top View
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Figure 11. DEM-PCM1780/1781/1782 Bottom View
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Demonstration Software
3 Demonstration Software
Software provided with the EVM board to allow programming of the PCM1608 internal registers. The software operates on computers running Microsoft Windows™ 3.1, 95, 98, 2000 or XP.
The demonstration software requires connection of the PC printer port to CN-2 of the EVM board using a standard printer cable.
3.1
Installation
The demonstration software is distributed on a CD-ROM.
To install the software on your PC computer, first create a new folder on your hard drive with an appropriate name (such as DEM1608). Then, open the DEMxxxx folder on the installation CD-ROM and copy all its files to your new folder.
Open the configuration setting file named # DEMxxxx using a text editor, such as Notepad. After the file opens, search for the following line:
PCMIFADR = &h378
The &h378 indicates the printer port address that the demonstration software uses to communicate with the EVM board.
This address must be set to %h378, &h278, or &h3BC. Most PCs use &h378 as the default printer port address. If your printer port is not located at &h378, edit the address to match your computer’s port address.
3.2
Using the Demonstration Software
Double-click on the application file named DEMxxxx. A window appears on your screen with two menu selections (Execute and Window) near the top of the window.
The Execute menu includes three selections: Initialize, Reset, and Exit. Selecting Initialize instructs the program to write all of the PCMDAC internal registers with the default values.
Reset instructs the program to rewrite the PCMDAC internal registers with the data currently elected in the application windows. Exit closes the application.
3.3
HOLD and PASS
Each window has a button near the top which is labeled either HOLD or PASS. The current setting is toggled by clicking on this button. When set to HOLD, the settings in a window can be changed, but are not written to the register(s) until the OK button (which appears at the bottom of the window) is pressed.
When set to PASS, any setting changes made in a window are immediately written to the corresponding register(s).
14 DEM-DAI1780/1781/1782EVM SLEU084 – February 2007
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