Texas Instruments PCM1792 User manual

 
 
 
July 2003 Audio Converter Products, Digital Audio
User’s Guide
SLEU037

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Copyright 2003, Texas Instruments Incorporated

EVM IMPORTANT NOTICE
Texas Instruments (TI) provides the enclosed product(s) under the following conditions:
This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION
PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided
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As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic
compatibility and therefore may not meet the technical requirements of the directive.
Should this evaluation kit not meet the specifications indicated in the EVM User’s Guide, the kit may be returned
within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE
WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED,
IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY
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TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not
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TI assumes no liability for applications assistance, customer product design, software performance, or
infringement of patents or services described herein.
Please read the EVM User’s Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM
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Mailing Address:
Texas Instruments
Post Office Box 655303
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Copyright 2003, Texas Instruments Incorporated

EVM WARNINGS AND RESTRICTIONS
It is important to operate this EVM within the input voltage range of "15 V and the output
voltage range of "15 V.
Exceeding the specified input range may cause unexpected operation and/or irreversible
damage to the EVM. If there are questions concerning the input range, please contact a TI
field representative prior to connecting the input power.
Applying loads outside of the specified output range may result in unintended operation and/or
possible permanent damage to the EVM. Please consult the EVM User’s Guide prior to
connecting any load to the EVM output. If there is uncertainty as to the load specification,
please contact a TI field representative.
During normal operation, some circuit components may have case temperatures greater than
55°C. The EVM is designed to operate properly with certain components above 55°C as long
as the input and output ranges are maintained. These components include but are not limited
to linear regulators, switching transistors, pass transistors, and current sense resistors. These
types of devices can be identified using the EVM schematic located in the EVM User’s Guide.
When placing measurement probes near these devices during operation, please be aware
that these devices may be very warm to the touch.
Mailing Address:
Texas Instruments
Post Office Box 655303
Dallas, Texas 75265
Copyright 2003, Texas Instruments Incorporated

Related Documentation From Texas Instruments
v
Preface

About This Manual
This document provides a description and instructions for use of an EVM
board for the PCM1792, DSD1792, PCM1794, and DSD1794 stereo audio
DACs.
How to Use This Manual
This document contains the following chapters:
-Chapter 1—Description
-Chapter 2—Schematic and Printed-Circuit Board
Related Documentation From Texas Instruments
-DSD1792 24-Bit, 192-kHz Sampling, Advanced Segment, Audio Stereo
Digital-to-Analog Converter data sheet, SLES067
-PCM1792 24-Bit, 192-kHz Sampling, Advanced Segment, Audio Stereo
Digital-to-Analog Converter data sheet, SLES069
-DSD1794 24-Bit, 192-kHz Sampling, Advanced Segment, Audio Stereo
Digital-to-Analog Converter data sheet, SLES077
-PCM1794 24-Bit, 192-kHz Sampling, Advanced Segment, Audio Stereo
Digital-to-Analog Converter data sheet, SLES080
FCC Warning
This equipment is intended for use in a laboratory test environment only. It
generates, uses, and can radiate radio frequency energy and has not been
tested for compliance with the limits of computing devices pursuant to subpart
J of part 15 of FCC rules, which are designed to provide reasonable protection
against radio frequency interference. Operation of this equipment in other
environments may cause interference with radio communications, in which

Trademarks
vi
case the user at his own expense will be required to take whatever measures
may be required to correct this interference.
Trademarks
Microsoft is a registered trademark of Microsoft Corporation.
Windows is a registered trademark of Microsoft Corporation.
Other trademarks are the property of their respective owners.

Contents
vii

1 Description 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Block Diagram 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 DEM-PCM/DSD1792/1794 Power Supply Connection 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 S/PDIF Connection 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 Audio Output Connection 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5 Configuration Control 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.1 DAI Receiver Data Format 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.2 Reset of DAI Receiver IC 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.3 DAI Interface Selection 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.4 PCM Audio/DSD Interface 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.5 Analog Output Selection 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.6 Hardware Control Switches S01−S07 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5.7 CN-2 I2C Interface/Zero Out 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.6 Demo Software 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.7 DEM-PCM/DSD1792/1794 Parts List (BOM) 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Schematic and Printed-Circuit Board 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 DEM-PCM/DSD1792/1794 Printed-Circuit Board 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 DEM-PCM/DSD1792/1794 Schematics 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents
viii

1−1 DEM-PCM/DSD1792/1794 Block Diagram 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1−2 CN001 Connection 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1−3 CN-2 Connection 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2−1 DEM-PCM/DSD1792/1794 Silkscreen 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2−2 DEM-PCM/DSD1792/1794—Top View 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2−3 DEM-PCM/DSD1792/1794—Bottom View 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2−4 DEM-PCM/DSD1792/1794 DAC, Analog Section 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2−5 DEM-PCM/DSD1792/1794 Power-Supply Section 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2−6 DEM-PCM/DSD1792/1794 Digital Section 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1−1 Digital Audio Receiver Configuration 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1−2 Digital Audio Source Selection 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1−3 Audio Data Format Select 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1
Description

The DEM-PCM/DSD1792/1794 is an evaluation module for the PCM1792
(DEM-PCM1792), DSD1792 (DEM-DSD1792), PCM1794 (DEM-PCM1794)
and DSD1794 (DEM-DSD1794) stereo audio DACs. For the PCM devices,
this EVM board accepts 24-bit linear PCM data at sampling rates up to fS= 96
kHz via the S/PDIF interface. For the non-S/PDIF interface, at a sampling rate
of fS = 192 kHz, 24-bit PCM data or 64-fS, 1-bit DSD data can be interfaced
directly at a connector on the board.
The DEM-PCM/DSD1792/1794 uses an NE5534 op amp for I/V conversion
in the analog output circuit to obtain excellent audio performance. There are
three analog signal output functions onboard as 2-V rms single-ended (RCA),
4.5-V rms single-ended (RCA), and 9-V rms balanced (XLR).
The DEM-PCM/DSD1792/1794 is operated by a ±15-V analog power supply,
5-V DAC power supply and 5-V digital power supply. A single 5-V power supply
can be used to power the DAC and digital circuitry by setting a jumper
connection, but to obtain the specified audio performance, use of separate
power supplies is recommend.
Typical audio performance is as follows:
THD+N = 0.0004%
Dynamic range (EIAJ) = 128 dB (4 V rms)
Dynamic range (EIAJ) = 125 dB (2 V rms)
Topic Page
1.1 Block Diagram 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 DEM-PCM/DSD1792/1794 Power Supply Connection 1-2. . . . . . . . . . . . .
1.3 S/PDIF Connection 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 Audio Output Connection 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5 Configuration Control 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.6 Demo Software 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.7 DEM-PCM/DSD1792/1794 Parts List (BOM) 1-7. . . . . . . . . . . . . . . . . . . . . .
Chapter 1

Block Diagram
1-2
1.1 Block Diagram
Figure 1−1.DEM-PCM/DSD1792/1794 Block Diagram
DAI
CS8414
DAC
PCM1792
DSD1792
PCM1794
DSD1794
CN001
LPF
5534
SW
REG Cont
+5 V
Digital
Lch OUT
BAL OUT
(MONO)
Lch LPF
OUT
COAX IN
OPT IN
JP
Rch OUT
Rch LPF
OUT
BAL
5534
I/V
5534
I/V
5534
SW
Mode Cont
3.3 V REG
REG1117 3.3 V REG REG1117
+5 V
Analog −15 V Analog +15 V Analog
I/V
5534
I/V
5534
BAL
5534
JP LPF
5534
1.2 DEM-PCM/DSD1792/1794 Power Supply Connection
-Connect the ±15-V analog power supply to TM5 (−VA), TM6 (AGND), and
TM7 (+VA). Power supply current is typically ±40 mA, maximum ±70 mA.
-Connect the 5-V DAC power supply to TM4 (+VCC) and TM3 (AGND). A
3.3-V regulator IC is connected to provide a 3.3-V power supply for the
DAC device. Power supply current is typically 50 mA, maximum 60 mA (at
fS= 44.1 kHz).
-Connect the 5-V digital power supply at TM2 (+VDD) and TM1 (DGND).
A 3.3-V regulator IC is connected to provide a 3.3-V logic supply to the
digital section. Power supply current is typically 70 mA, max +120 mA.
-Jumper JP-P is for the selection of separate 5-V +VCC and +VDD power
supplies, or a common 5-V power supply.
J1−2: Separate power supplies
J3−4: Common power supply; connect 5 Vto either TM4 (+VCC) or TM2
(+VDD).
1.3 S/PDIF Connection
Connect the S/PDIF interface at either PJ-1 (RCA phono jack, coaxial cable)
or U001 (optical cable). The DEM-PCM/DSD1792/1794 accepts sampling
rates up to fS= 96 kHz at the S/PDIF interface. The optical input or coaxial
input is automatically detected by the DAI receiver. For the fS= 192-kHz

Audio Output Connection
1-3
Description
sampling audio data interface, the interface signal can be connected at the
right side of the CN001 connector or at ext-xxxx of CN004 (not mounted).
1.4 Audio Output Connection
The audio output signal can be obtained on either the RCA stereo pin jacks
or the XLR connector. The audio output signal level and format are selected
by jumper, using the jumper connections listed in Section 1.5.5.
-Connect RCA cables at either PJ-3 and PJ-5 (2 V rms, L ch/R ch) or PJ-2
and PJ-4 (4.5 V rms L ch/R ch) for stereo mode operation.
-CN-M (XLR connector) is a 9-V rms mono output for the mono operation
mode of the PCM/DSD1792.
1.5 Configuration Control
1.5.1 DAI Receiver Data Format
Switches SW001 through SW003 are used to set the DAI receiver output audio
interface format as shown in Table 1−1. The initial (default) format of the
PCM1792/DSD1792 is I2S format.
Table 1−1.Digital Audio Receiver Configuration
SW001 SW002 SW003 Receiver Output Data Format
LLL16- to 24-bit left-justified
LHL16- to 24-bit l2S
HLH16-bit right-justified (or standard)
LHH18-bit right-justified (or standard)
1.5.2 Reset of DAI Receiver IC
Switch SW004 is a normally-open, momentary-contact pushbutton switch
used to reset the digital audio receiver when necessary.
1.5.3 DAI Interface Selection
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. Switch SW005 is used
to select between the digital audio receiver and connector CN004 as the
source of the audio interface. Table 1−2 shows the available switch settings.
Table 1−2.Digital Audio Source Selection
SW005 Setting Source Selection
INT Digital audio receiver (U002)
EXT Connector CN004 via buffer U005
CN004 is not supplied. However, the board has the necessary wiring and holes
so that the user can mount the connector if desired.

Configuration Control
1-4
1.5.4 PCM Audio/DSD Interface
Connector CN001 allows selection of the audio data interface connection by
jumper settings. In the case of a linear PCM audio data interface between the
DAI receiver and the PCM/DSD1792/1794 DAC, system clock, BCK, LRCK,
DATA and GND should be jumper connected. The MSEL jumper connection
is for the selection of SPI/I2C register control on the PCM1792. In the case of
a DSD audio data interface between the DSD decoder LSI and the DSD1792
DAC, DSDL, DSDR, DBCK and system clock should be connected at right side
pins of CN001. The MSEL jumper must be connected (to GND) for SPI mode
operation of the PCM1792.
Figure 1−2.CN001 Connection
Lch ZERO Out/PCM. Lch DATA In/DSD
CN001
Rch ZERO Out/PCM. Rch DATA In/DSD
MSEL/PCM. DBCK In/DSD
System Clock In
GND
BCK In
BCK In for Left-Justified
LRCK In
DATA In
1.5.5 Analog Output Selection
Jumper connections JP-1 through JP-4 are for selection of the analog output
function. Jumper connections JP-1 through JP-4 must all have either pins 1−2
connected or pins 3−4 connected.
-1−2: 4.5-V rms single-ended output (PJ-2, PJ-4) and 9-V rms balanced
output (CN-M)
JCutoff frequency of this analog output circuit is 200 kHz
-3−4: 2-V rms single-ended output (PJ-1, PJ-3)
JCutoff frequency of this second-order active post-LPF analog output
circuit is 70 kHz.
1.5.6 Hardware Control Switches S01−S07
Switches S01−S07 are hardware controls for the PCM1794. S01 is a reset
control for both PCM/DSD1792 and PCM/DSD1794. S02, S03, S05 and S06
are for audio format selection as shown in Table 1−3. Switches S02−S07 must
be set to the N position for the PCM/DSD1792 and DSD1794.
S01 RESET H: Normal Operation L: RESET
S02 FMT1 Audio format select
S03 FMT0 Audio format select

Demo Software
1-5
Description
S04 MUTE H: MUTE ON L: MUTE OFF
S05 DEM H: De-emphasis ON L: De-emphasis OFF
S06 CHSL Audio format select
S07 MONO Audio format select
Table 1−3.Audio Data Format Select
MONO CHSL FMT1 FMT0 FORMAT STEREO/MONO DF ROLLOFF
0 0 0 0 I2S Stereo Sharp
0 0 0 1 LJF Stereo Sharp
0 0 1 0 Standard, 16-bit Stereo Sharp
0 0 1 1 Standard, 24-bit Stereo Sharp
0 1 0 0 I2S Stereo Slow
0 1 0 1 LJF Stereo Slow
0 1 1 0 Standard, 16-bit Stereo Slow
0 1 1 1 DF bypass Mono −
1 0 0 0 I2SMono, L-channel Sharp
1 0 0 1 LJF Mono, L-channel Sharp
1 0 1 0 Standard, 16-bit Mono, L-channel Sharp
1 0 1 1 Standard, 24-bit Mono, L-channel Sharp
1 1 0 0 I2SMono, R-channel Sharp
1 1 0 1 LJF Mono, R-channel Sharp
1 1 1 0 Standard, 16-bit Mono, R-channel Sharp
1 1 1 1 DF bypass Mono, R-channel Sharp
1.5.7 CN-2 I2C Interface/Zero Out
CN-2 is the I2C control interface connector and zero output.
Figure 1−3.CN-2 Connection
CN−2
SDA/ZERO
SCL
ADRI
ADRO
GND
1.6 Demo Software
Demonstration software is provided to control the PCM1792/DSD1792
internal register using a PC under MicrosoftWindows. The software uses
a printer cable to connect between the PC and connector CN003 on the
DEM-PCM/DSD1792.

Demo Software
1-6
Demonstration software includes a total five files in the DEM1792 directory.
These files are:
-DEM1792.exe
-DEM1792.ini
-Vbrjp200.dll
-Ver.dll
-Inpout.dll
Copy these files to a convenient directory (folder) such as C: DEM1792.
Then, change the printer-port address in DEM1792.ini to &H378, &H278, or
&H3BCO (Most PCs use &H378 as the default printer port address.)
Top menu
Operation window
Function window
Attenuation window

DEM-PCM/DSD1792/1794 Parts List (BOM)
1-7
Description
1.7 DEM-PCM/DSD1792/1794 Parts List (BOM)
Ref No. Value Part Type Part Name Manufacturer
C001 0.01 µFFilm capacitor AMFF0050J103 Nissei
C002 0.01 µFFilm capacitor AMFF0050J103 Nissei
C003 10 µF/16 V AL electrolytic capacitor ROA-16V100M ELNA
C004, 006 0.1 µFFilm capacitor AMFF0050J104 Nissei
C005 10 µF/16 V AL electrolytic capacitor ROA-16V100M Nissei
C007 10 µF/16 V AL electrolytic capacitor ROA-16V100M ELNA
C008 0.1 µFFilm capacitor AMFF0050J104 Nissei
C009 0.068 µFFilm capacitor AMFF0050J683 Nissei
C010 0.1 µF Ceramic capacitor D55Y5V1H104A NEC
C011 0.1 µF Ceramic capacitor D55Y5V1H104A NEC
C012 10 µF/16 V AL electrolytic capacitor
C013 0.1 µF Ceramic capacitor D55Y5V1H104A NEC
C014 0.1 µF Ceramic capacitor D55Y5V1H104A NEC
C015 100 µF/16 V AL electrolytic capacitor ROA-16V101M ELNA
C016 0.1 µFFilm capacitor AMFF0050J104 Nissei
CA1, 3 10 µF/16 V AL electrolytic capacitor Cerafine ELNA
CA5−8 10 µF/16 V AL electrolytic capacitor Cerafine ELNA
CA2, 4, 9 0.047 µFFilm capacitor APFF Nissei
CA10−13 22 pF Ceramic capacitor
CA18, 19 22 pF Ceramic capacitor
CA26, 27 22 pF Ceramic capacitor
CA14−17 2700 pF Film capacitor APSF0100J272 Nissei
CA20, 23 8200 pF Film capacitor APSF0100J822 Nissei
CA21, 22 1800 pF Film capacitor APSF0100J182 Nissei
CA24, 25 1800 pF Film capacitor APSF0100J182 Nissei
CF1−4 2200 pF Film capacitor APSF0100J222 Nissei
CN001 18-pin connector FFC-18BMEP1 Honda Tsushin
CN002 2-pin connector FFC-2BMEP1 Honda Tsushin
CN003 L connector 57LE40360-7700(D3) Daiichi Denshi
CN-M XLR connector NC3MAH-0 Meutrick
CP1, 2, 3 220 µF/25 V AL electrolytic capacitor Cerafine ELNA
CP4, 5, 6 0.047 µFFilm capacitor APFF Nissei
CP7, 8 1 µF/16 V AL electrolytic capacitor Cerafine ELNA
CP9, 10 1 µF/16 V AL electrolytic capacitor Cerafine ELNA
CP11−26 1 µF/16 V AL electrolytic capacitor Cerafine ELNA
CPD1 220 µF/25 V AL electrolytic capacitor Cerafine ELNA
CPD2 0.1 µF Ceramic capacitor
D001 Diode 1SS133 ROHM
FIL001 Unmounted Unmounted Unmounted Unmounted
JP1−4 4-pin connector FFC-4BMEP1 Honda Tsushin
JP-P 4-pin connector FFC-4BMEP1 Honda Tsushin

DEM-PCM/DSD1792/1794 Parts List (BOM)
1-8
Ref No. ManufacturerPart NamePart TypeValue
L001 Unmounted Unmounted Unmounted Unmounted
PJ-1 RCA connector (yellow) LPR6520-0804 SMK
PJ-2, 3 RCA pin (white) Wake
PJ-4, 5 RCA pin (red) Wake
R001 75 Ω1/8-W resistor
R002 470 Ω1/8-W resistor
R003 47 kΩ1/8-W resistor
R004 470 Ω1/8-W resistor
RA001 47 kΩ×5Resistor array
RA1 10 Ω1/8-W resistor
RA2−9 360 Ω1/8-W resistor
RA10, 11 100 Ω1/8-W resistor
RA12, 13 1.3 Ω1/8-W resistor
RA18, 19 1.3 Ω1/8-W resistor
RA14−17 620 Ω1/8-W resistor
RA20−23 620 Ω1/8-W resistor
RA24, 25 100 Ω1/8-W resistor
RF1−4 820 Ω1/8-W resistor
RP1, 2, 3, 4 22 kΩ1/8-W resistor
RP5 10 Ω1/8-W resistor
SW001 DIP SW 1-pole double FT1D-2M Fujisoku
SW002 DIP SW 1-pole double FT1D-2M Fujisoku
SW003 DIP SW 1-pole double FT1D-2M Fujisoku
SW004 Push SW FP1F-2M Fujisoku
SW005 DIP SW 2-pole double FT2D-2M Fujisoku
SW006 DIP SW 4-element DSS104 Fujisoku
TM1, 3, 6 Banana jack (black)
TM2, 4 Banana jack (red)
TM5 Banana jack (blue)
TM7 Banana jack (orange)
U001 TOSLINK TORX173/179 Toshiba
U002 Digital audio I/F receiver IC CS8414-CS Crystal
U003 Logic IC TC74HC14AF Toshiba, TI
U004 Logic IC TC74HC32AF Toshiba, TI
U005, U006 Logic IC TC74VHC244F Toshiba, TI
UA1−8 8-pin DIP IC socket
UP1, 2 Regulator IC REG1117-3.3 Burr-Brown/TI
Shorting plug ×5 DIC130 Honda Tsushin
Spacer (H:20-25 mm) ×4

2-1
Schematic and Printed-Circuit Board
   
This chapter presents the DEM-PCM/DSD1792/1794 printed-circuit board
and schematics.
Topic Page
2.1 DEM-PCM/DSD1792/1794 Printed-Circuit Board 2-2. . . . . . . . . . . . . . . . .
2.2 DEM-PCM/DSD1792/1794 Schematics 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 2

DEM-PCM/DSD1792/1794 Printed-Circuit Board
2-2
2.1 DEM-PCM/DSD1792/1794 Printed-Circuit Board
Figure 2−1.DEM-PCM/DSD1792/1794 Silkscreen

DEM-PCM/DSD1792/1794 Printed-Circuit Board
2-3
Schematic and Printed-Circuit Board
Figure 2−2.DEM-PCM/DSD1792/1794—Top View

DEM-PCM/DSD1792/1794 Printed-Circuit Board
2-4
Figure 2−3.DEM-PCM/DSD1792/1794—Bottom View