Texas Instruments | DEM-PCM3000: Demonstration Fixture for the PCM3000 and PCM3001 | User Guides | Texas Instruments DEM-PCM3000: Demonstration Fixture for the PCM3000 and PCM3001 User guides

Texas Instruments DEM-PCM3000: Demonstration Fixture for the PCM3000 and PCM3001 User guides
DEM-PCM3000/3001
DEM-PCM3000-1
®
FEATURES
BLOCK DIAGRAMS
● DEM-PCM3000/3001
Basic evaluation board for the PCM3000
or PCM3001, including the minimum
required peripheral circuits.
DEMONSTRATION SOFTWARE
AND CONNECTOR
Centronics Connector
● DEM-PCM3000-1
DEM-PCM3000 with additional demonstration software for evaluation. Enables
evaluation of the PCM3000’s various
functions including DAC attenuation and
data format selection.
6 Pin VH Connector
+VCC
GND
Demonstration
Software Disk
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1997 Burr-Brown Corporation
SBAU026
LI-487A
Printed in U.S.A. August, 1998
BLOCK DIAGRAMS (CONT)
DEM-PCM3000/3001 SET-UP DIAGRAM
Lch Analog Input
Audio Interface
Rch Analog Input
PCM3000/3001
Lch Analog Input
Software Mode Control
Rch Analog Input
GND
+VCC
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
®
DEM-PCM3000/3001
2
DEM-PCM3000/3001
DIGITAL FORMAT SELECTION
Select the digital data input/output format for the PCM3001
using the DIP switches, as shown in Figure 2. When testing
the PCM3000, set the ML, MC, and MD switches to OFF.
The DEM-PCM3000/3001 is a basic evaluation fixture for
the PCM3000/3001. When the evaluation board is connected to a power source, digital signal input, and master
clock (256fS, 384fS or 512fS), it is possible to test the basic
functions and operations of the PCM3000 or PCM3001.
Pin Labels
The evaluation board operates from a single +5V power
supply and provides a system clock to the PCM3000/3001
using a crystal oscillator or an external clock.
The internal register functions of the DEM-PCM3000/3001
can be controlled via ML, MC, and MD. These register
functions are easily tested by using the board in conjunction
with the PCM3000/3001 demonstration software kit. In
addition, for testing the PCM3001, the data format of the
digital input or output signals can be set with DIP switches
(see Figure 1).
RSTB
ON: Reset ON OFF: Reset OFF
ML
PCM3001 (FMT0)
MC
PCM3001 (FMT2)
MD
PCM3001 (FMT1)
ON
OFF
FIGURE 2. Format and Reset Control.
ML
MC
MD RSTB GND +VCC
Connector
DIP Switch
4
Connector
Connector
4
AIL
CLKO
GND
XTI
AIR
DOUT
PCM3000/3001
DIN
Connector
LRCK
AOL
BCK
GND
GND
AOR
FIGURE 1. DEM-PCM3000/3001 Block Diagram.
ML
(FMT0)
MD
(FMT1)
MC
(FMT2)
FORMAT
NUMBER
DAC DATA FORMAT
ADC DATA FORMAT
ON
ON
ON
FORMAT0
16-Bit, MSB First, Right-justified
16-Bit, MSB First, Left-justified
OFF
ON
ON
FORMAT1
18-Bit, MSB First, Right-justified
18-Bit, MSB First, Left-justified
ON
OFF
ON
FORMAT2
16-Bit, MSB First, Right-justified
16-Bit, MSB First, Right-justified
OFF
OFF
ON
FORMAT3
18-Bit, MSB First, Right-justified
18-Bit, MSB First, Right-justified
ON
ON
OFF
FORMAT4
16-/18-Bit, MSB First, Left-justified
18-Bit, MSB First, Left-justified
OFF
ON
OFF
FORMAT5
16-/18-Bit, MSB First, I2S
18-Bit, MSB First, I2S
ON
OFF
OFF
FORMAT6
16-Bit, MSB First, DSP-frame
16-Bit, MSB First, DSP-frame
OFF
OFF
OFF
RESERVED
TABLE I. Data Format Control.
®
3
DEM-PCM3000/3001
®
DEM-PCM3000/3001
4
CN4
C14
10µF
+
C13
10µF
+
C7
10µF
+
C5
2.2µF
CS6
CS5
CS4
CS3
C4
10µF
FIGURE 3. DEM-PCM3000/3001 Schematic.
AOL
GND
AOR
AIR
GND
AIL
CN3
C6
10µF
+
+
+
0.1µF
C12
10µF
C11
470pF
+
+
C9
10µF
C10
470pF
+
C8
10µF
0.1µF
14
13
12
11
10
VCC2
AGND2
VOUTR
VCOM
CINPL
CINNL
9
CINPR
7
CINNR
VINR
6
8
VREFR
VREFL
AGND1
VCC1
VINL
5
4
3
2
1
VOUTL 15
LRCIN 16
BCKIN 17
DIN 18
DOUT 19
XTI 20
XTO 21
CLKIO 22
VDD 23
DGND 24
MC 25
MD 26
ML 27
RSTB 28
U1
PCM3000/3001
C3
+ 2.2µF
XTAL
MD (FMT1)
MC (FMT2)
ML (FMT0)
RSTB
CS2
CS1
C2 +
0.1µF
C1
100µF
XTAL, CS1, CS2, CS3, CS4, CS5, CS6 are not included with the demonstration board.
R3
50Ω
R2
50Ω
R1
50Ω
0.1µF
S1
CN2
CN1
GND
BCK
LRCK
DIN
DOUT
XI
CLKIO
+VCC
GND
RSTB
MC
MD
ML
Silkscreen
Top View
Bottom View
FIGURE 4. DEM-PCM3000/3001 Parts Layout .
®
5
DEM-PCM3000/3001
DEMONSTRATION SOFTWARE KIT
considerations. It is also recommended to use a desk-top
computer. Certain laptop PCs have non-standard parallel
ports which may not be compatible with the evaluation
board.
The demonstration software kit is designed to perform
evaluation of the PCM3000’s special features using a PC. It
consists of a 3.5" floppy disk with demonstration hardware
and an interface cable/connector for the printer port. Install
the demonstration software on a PC and connect mode
control signals to the PCM3000 using the PC’s printer port.
This connection is made by attaching the included cable/
connector to the printer port of the PC as shown in Figure 5.
The demonstration software allows for selection and control
of the PCM3000 functions while displaying them on the PC
screen. Note that the demonstration software does not include audio signals and it is necessary to evaluate the basic
characteristics in conjunction with another system that provides the three-wire digital audio interface.
Type the following commands at the DOS prompt:
c:>md dem3000
c:>cd dem3000
c:\dem3000> copy a:\dem3000\*.*
Confirm that the files have been copied.
NOTE: If using a windows environment, under “File Manager”, select “Create Directory” from the File menu and
create a directory named “dem3000” on the hard drive
where the software is to be installed. Copy all the files from
the floppy disk’s “dem3000” subdirectory.
SYSTEM REQUIREMENTS
PRINTER PORT SET-UP
In order to operate the demonstration software, the following computer requirements must be met:
The demonstration software controls the software modes
of the PCM3000 via a PC printer port. To ensure the
printer port is functioning properly, establish the address
of the printer port in the “dem3000.ini” file in directory
“c:\dem3000”.
• An IBM-compatible PC with a 386/25MHz processor
(equipped with printer port for I/O)
• Windows 3.1 (or better) operating system such as
Windows 95
Determining the Address of the Printer Port
Installing the DEM-PCM3000 Software
In PC-ATs (IBM PCs), the following three printer port
addresses are used: 3BC (Hex); 378 (Hex); and 278 (Hex).
Insert the disk into drive A: and confirm that the following
files are included on the floppy disk under the dem3000
directory:
Determine the address of the printer port you are using. If the
address is unclear, you can find it with the following steps
in Windows 3.1:
inpuout.d11
vbrjp200.d11
ver.d11
dem3000.exe
dem3000.ini
• Switch from Windows to DOS mode
• Type “msd” at the DOS prompt
A set of address information, including the printer port, will
be displayed on the screen to make it possible to determine
the correct address. In Windows 95, you can view System
Properties in the control panel and determine the printer port
properties (resources).
These five files contained on the floppy disk should be
copied to the hard drive under a directory named “dem3000”.
It is recommended to install the DEM-PCM3000 software
on the hard disk drive. It is possible to run the program from
the floppy but not recommended due to operating speed
VH
Connector
Digital Input
Interface Cable/Connector
DEM-PCM3000
Audio Output
PC
Parallel Port
+5V
Power Supply
Demonstration Software DIsk
FIGURE 5. DEM-PCM3000-1 Interface Connection.
®
DEM-PCM3000/3001
6
RUNNING/EXECUTING THE DEMONSTRATION
SOFTWARE
Registering the Printer Port Address
Register the address of the printer port in file
c:\dem3000\dem3000.ini. For example, if the printer port
address is 378 (Hex), use the following method:
Double-click the “dem3000.exe” file in directory
“c:\dem3000” on the hard disk from the Windows File
Manager. The main menu for the PCM3000/3001 is displayed on the screen. This menu shows the contents of each
mode register and opens each of the submenu windows
(see Figure 6).
Open the Notepad accessory in Windows. Select “OPEN”
from the File menu and open “dem3000.ini” in directory
c:\dem3000. The following text is displayed:
[DEM3000]
Under the main menu, select Execute (E) or Window (W)
and the submenus will be displayed. Under Execute (E), the
user can set the Reset (R) function or select Exit (X) to leave
the demonstration software. Under Window (W), the user is
able to open the Attenuate Control, Function Control, or
Format Control to set the PCM3000/3001 mode registers.
PCMIFADR=&H3BC
Rewrite the above text file’s second line from &H3BC to
&H378. The rewritten text file content should appear as
[DEM3000]
PCMIFADR=&H378
Select Save from the File menu and exit.
PCM3000 Control
Execute (E)
Execute (E)
Reset (R)
Window (W)
Exit (X)
Mode Register
Register 0
01FFH
Register 1
01FFH
Register 2
0000H
Register 3
0000H
Window (W)
Attenuate (A)
Function (F)
DataForm (D)
PCM3000 Attenuate Control
Control Data
PCM3000 Function Control
Control Data
HOLD
Attenuate Level
Functional Condition
DeEmph
Left
step 255
0.00 dB
Right
OFF
IZD
OFF
0.00 dB
OFF
LRCK
Low = R
OFF
LOP
OFF
OFF
OFF
OFF
CLOSE
HOLD
Format Condition
ON
AttCtrl
step 255
PCM3000 Format Control
Control Data
HOLD
CLOSE
ADC/DAC Format
16: Left / 16: Right
CLOSE
FIGURE 6. Demonstration Software Main Menu.
®
7
DEM-PCM3000/3001
Controlling the Mode Registers
FUNCTION CONTROL
To set the mode registers, double-click on Attenuate (A),
Function (F), or DataForm (D) from the main menu. Each
register will appear and have a “HOLD” or “PASS” selection for Control Data (see Figure 7). In “HOLD”, only the
set data on the screen changes and the control data in the
actual PCM3000 prior to “HOLD” are input. If “PASS” is
selected, you can simultaneously change set data on the
screen and also control data for the PCM3000. Select
“CLOSE” to exit this menu and return to the main menu.
When Function (F) is selected from the menu, the Function
Control screen is displayed (see Figure 10). The programmable functions that may be controlled are shown in Table II.
RSTB
HOLD
Control Data
Control Data
DATA
FORMAT
ADC/DAC
LDL (R), AL (R) 7~0
0, 1
DAC
MUT
2
DAC
De-emphasis
DM0, 1
2
DAC
Output Enable
OUT
2
DAC
Infinite Zero Detect
IZD
2
DAC
Attenuate Control
ATC
2
DAC
High Pass Filter Control
BYPS
2
ADC
Power Down
PDWN
2
ADC
LRP
3
ADC/DAC
FMT (2~0)
3
ADC/DAC
LOP
3
ADC/DAC
Soft Mute
(common, individual)
PASS
PASS
REGISTER
RSTB (Pin 28)
Attenuation Load Control
ATTENUATE CONTROL
Control Data
FUNCTION
LABEL
FUNCTION
CLOSE
Left/Right Polarity
Data Format
Loop Back
FIGURE 7. Control Data Status.
TABLE II. Programmable Functions.
By selecting Attenuate (A), the user can control a L/R
independent 256-step attenuator (Figure 8). When L/R simultaneous control is selected in Function (F), only the left
channel is displayed (Figure 9).
FORMAT CONTROL
When DataForm (D) is selected, the Format Control screen
appears (see Figure 11) and the following controls are
possible:
LRCK polarity selection
Digital Loop-back selection
PCM3000 Attenuate Control
Control Data
Audio Data (ADC/DAC) Format
HOLD
ORDERING INFORMATION
Attenuate Level
Left
step 255
0.00 dB
step 255
0.00 dB
Right
CLOSE
FIGURE 8. PCM3000 Attenuate Control for Individual
Channels (default).
Attenuate Level
Left
step 144
–5.00 dB
step 144
–5.00 dB
Right
FIGURE 9. PCM3000 Attenuate Control for Simultaneous
Channels.
®
DEM-PCM3000/3001
8
PRODUCT
DESCRIPTION
DEM-PCM3000
DEM-PCM3001
DEM-PCM3000-1
PCM3000 Demonstration Board
PCM3001 Demonstration Board
PCM3000 Demonstration Board, Software Cable
PCM3000 Function Control
Control Data
DeEmph
De-Emphasis Control
OFF
HOLD
OFF
48.0kHz
44.1kHz
32.0kHz
Functional Condition
DeEmph
OFF
IZD
OFF
AttCtrl
L< > R
Output
ON
Mute
OFF
BYPS
OFF
PDWN
OFF
AttCtrl
Attenuate Lch/Rch
L<> R
L<> R
R
L== R
CLOSE
Mute
OFF
Soft Mute
IZD
OFF
Infinite Zero Detect
BYPS
OFF
High Pass Filter Control
Output
ON
DAC Output Enable
PDWN
OFF
Power Down
FIGURE 10. PCM3000 Function Control.
PCM3000 Format Control
Control Data
LRCK
LRCK Polarity
Low = R
HOLD
Low = R
Low = L
Format Condition
LRCK
Low = R
ADC/DAC Format
LOP
OFF
16: Left / 16: Right
Digital Loop Back Selection
LOP
OFF
CLOSE
ADC/DAC Format
16: Left / 16: Right
16: Left / 16: Right
18: Left / 18: Right
16: Right / 16: Right
18: Right / 18: Right
18: Left / 18: Left
18: IIS / 18: IIS
16: DSP / 16: DSP
FIGURE 11. PCM3000 Format Control.
®
9
DEM-PCM3000/3001
IMPORTANT NOTICE
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any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
Customers are responsible for their applications using TI components.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright  2000, Texas Instruments Incorporated
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