Texas Instruments DEM-DAI3010 User manual

DEMĆDAI3010
April 2003 DAV Digital Audio/Speaker
User’s Guide
SLEU036

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Copyright 2003, Texas Instruments Incorporated

EVM IMPORTANT NOTICE
Texas Instruments (TI) provides the enclosed product(s) under the following conditions:
Thisevaluationkit being soldbyTI is intendedforuse for ENGINEERING DEVELOPMENT OR EVALUATION
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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.
Applyingloadsoutsideofthespecifiedoutputrangemayresultinunintendedoperationand/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.
Duringnormaloperation,somecircuitcomponentsmayhavecasetemperaturesgreaterthan
55°C.TheEVM isdesignedto operateproperlywith certaincomponentsabove 55°C aslong
astheinputandoutput rangesare maintained.Thesecomponentsincludebut arenot limited
tolinearregulators,switchingtransistors,passtransistors,andcurrentsenseresistors.These
typesof devicescanbeidentifiedusingtheEVM schematiclocated intheEVMUser’sGuide.
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

Contents
v
Contents
1 Description 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Block Diagram 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Use of the DEM-DAI3010 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2.1 Initial Settings of the DEM-DAI3010 (at shipping) 1-3. . . . . . . . . . . . . . . . . . . . . . . .
1.2.2 How to Connect Power Supplies to the DEM-DAI3010 1-3. . . . . . . . . . . . . . . . . . .
1.3 Settings and Connections for Basic Operation 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 Setting Functions 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.1 Function Setting Switches and Header Pins 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4.2 Detailed Explanation of Function Setting Switches and Header Pins 1-6. . . . . . . .
2 Printed-Circuit Board and Schematic 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 DEM-DAI3010 Printed-Circuit Board 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 DEM-DAI3010 Schematics 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figures
1–1 DEM-DAI3010 Block DIagram 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–1 DEM-DAI3010 Silkscreen 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–2 DEM-DAI3010—Top View 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–3 DEM-DAI3010—Bottom View 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–4 DEM-DAI3010 Analog Section 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–5 DEM-DAI3010 Regulator, Connector and Ext.-I/F 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–6 DEM-DAI3010 Digital Section (Digital Audio Interface) 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables
1–1 Initial Settings of the DEM-DAI3010 at Shipping 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1–2 Power Supply Terminals and Supply Voltage (Depending on CN057 Setting) 1-3. . . . . . . . . .
1–3 Switches and Header Pins of the DEM-DAI3010 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents
vi

1-1
Description
The DEM-DAI3010 is an evaluation board for the PCM3010 (24-bit, 96-kHz
ADC and 192-kHz DAC, stereo codec). This board includes not only the
PCM3010 but also analog I/O terminals, analog filter circuits, and an S/PDIF
digitalI/Ocircuitthatisusefulforcodecevaluation.S/PDIF I/O circuits consist
ofa24-bit/96-kHzdigitalaudiointerfacereceiver(DIR1703)andadigitalaudio
interface transmitter (DIT4096), and include optical (TOSLINK) and coaxial
S/PDIF digital I/O connectors. Removing shorting plugs from the pins of a
header breaks the connection between the S/PDIF I/O circuits and the
PCM3010for easier PCM3010 device evaluation.
Topic Page
1.1 Block Diagram 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Use of the DEM-DAI3010 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Settings and Connections for Basic Operation 1-4. . . . . . . . . . . . . . . . . .
1.4 Setting Functions 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1

Block Diagram
1-2
1.1 Block Diagram
Figure 1–1.DEM-DAI3010 Block DIagram
L-ch Output
R-ch Output
PCM3010
(Slave Only)
L-ch 1Vrms
R-ch 1Vrms
R-ch 2Vrms
L-ch 2Vrms
±15 V
DIR1703
DIT4096
LPF
74HCT244
OPT. IN SW001
S/PDIF Input
S/PDIF Output
24.576 MHz
COAX. IN
COAX. OUT
OPT. OUT
JP107
LPF
DAC Output
JP105
JP106
LPF
LPF
SW051
System Clock
Data Format
SW005 SW006
Channel Status System Clock
Data Format
Power Down
SW101
System Clock
Data Format
SW003
ADC Input
SW004 JP001
Clock Mode
5 V
LPF Circuits
3.3 V
3.3 V
CN057
X’tal Frequency
System Clock
PCM3010 VDD
PCM3010 VCC and DIR1703, DIT4096, TOSLINK

Use of the DEM-DAI3010
1-3
Description
1.2 Use of the DEM-DAI3010
The DEM-DAI3010 is shipped with standard settings preset. Therefore,
connecting power supplies (15-V, –15-V and 5-V) is the only requirement to
prepare the board for use, unless nonstandard settings are desired.
1.2.1 Initial Settings of the DEM-DAI3010 (at shipping)
Table 1–1.Initial Settings of the DEM-DAI3010 at Shipping
Item Initial Setting (at shipping)
Power supply voltage 15 V, –15 V, and 5 V (close CN57)
Power supply terminals CN51–CN55 (open CN56)
Connection of PCM3010 and S/PDIF I/O DIR1703 and DIT4096 connected with JP107
DIR1703 system clock (SCK) 256 fS
DIR1703 output audio data format I2S
DIR1703 crystal clock frequency 24.576 MHz (load capacitance: 18 pF)
DIT4096 system clock (SCLK) 256 fS
DIT4096 input audio data format I2S
PCM3010 system clock Automatic selection (no setting required)
PCM3010 I/O audio data format I2S
PCM3010 power-down function Disabled
PCM3010 de-emphasis function (DAC) Disabled
PCM3010 DAC cutoff frequency 54 kHz (JP101–JP104 are closed)
PCM3010 ADC input terminal selection CN101, CN102: 2-V rms input (with LPF)
1.2.2 How to Connect Power Supplies to the DEM-DAI3010
The DEM-DAI3010 requires 5-V, 15-V, and –15-V power supplies. Power is
supplied to this board by five binding posts (one each for VCC = +5 V, +AVCC
=+15V,–AVCC=–15V,andtwoforground)fromstabilizeddcpowersupplies.
VDD (3.3 V) for the PCM3010 is normally generated by an onboard
voltage-regulator IC from VCC (5 V), but it is possible to supply 3.3 V directly.
To do so, open CN057, then supply 3.3 V to CN056 and 5 V to CN054. If 3.3
V is supplied externally, 5 V must still be provided to CN054 in order to supply
theanalogsectionofthePCM3010.Toavoidlatch-upofthePCM3010,ensure
that VCC and VDD are powered up simultaneously.
Table 1–2.Power Supply Terminals and Supply Voltage (Depending on CN057 Setting)
Power Terminal CN057 Closed (Default) CN057 Open
CN051 (orange) 15 V 15 V
CN052 (green) 0 V (ground) 0 V (ground)
CN053 (blue) –15 V –15 V
CN054 (red) 5 V 5 V
CN055 (black) 0 V (ground) 0 V (ground)
CN056 (2-pin connector) Open (no connection) 3.3 V

Settings and Connections for Basic Operation
1-4
1.3 Settings and Connections for Basic Operation
The PCM3010 is an LSI codec containing an ADC and a DAC. Connections
and settings depend on the evaluation object (ADC or DAC), and the setup
should be checked carefully. Following are example settings for three typical
evaluationsituations.NotethatwhenusingS/PDIFI/O,theopticalandcoaxial
input corresponds to fS= 96 kHz.
When the DAC section of PCM3010 is evaluated with S/PDIF input signal (the
PCM3010 operates as a slave of the DIR1703 PLL clock)
-Close all pins of JP107 with shorting plugs.
-Input an S/PDIF signal into the optical (U053) or coaxial (CN059)
connector.
-CN105 (L-ch) and CN106 (R-ch) are the analog signal outputs.
-Choose an S/PDIF input terminal (optical/coaxial) with the S/PDIF input
switch (SW051).
-Set the clock-mode switch (SW004) to PLL or Auto.
-ThecutofffrequencyoftheLPFcanbechangedbyJP101,JP102,JP103,
and JP104. All these jumpers are shorted at the time of shipment, which
sets the cutoff frequency to 20 kHz.
WhentheADCsection of PCM3010 is evaluated withS/PDIFoutputsignal(the
PCM3010 operates as a slave of the DIR1703 crystal clock)
-Short all pins of JP107 with shorting plugs.
-Connect an analog signal to CN101/CN102 using an LPF, or to CN103/
CN104 using only a coupling capacitor without an LPF.
-Selecttheanaloginput terminal by changing by thesettingsofJP105and
JP106. (Setup at the time of shipment is for CN101 and CN102.)
-A Toslink (U052) and a pin jack (CN058) are the S/PDIF digital output
terminals.SelectthedigitaloutputconnectorbysettingtheS/PDIFoutput
switch (SW051). Simultaneous use of optical and coaxial outputs is
impossible.
-Set the clock mode switch (SW004) to X’tal. The X’tal mode of DIR1703
is used as a master clock for the ADC and DIT.
-Set up the channel status data using SW006.
-Because system clock frequency is 256 fS, the ADC section operates at
fS=96kHz.TooperatetheADCsectionatadifferentfS,thecrystal(X001)
connected to DIR1703 must be changed. The system clock setup can be
changed if required. The load capacitance used with the crystal is
dependent on the crystal properties. Therefore, when the crystal is
changed, the capacitance of C006 and C007 must be selected to match
the crystal specification.
When S/PDIF I/O is not used (the PCM3010 is evaluated alone)
-Remove all shorting plugs attached to JP107.