Texas Instruments DEM-DAI3010 User Manual

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DEM DAI3010

User’s Guide

April 2003

DAV Digital Audio/Speaker

SLEU036

IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third–partyproducts or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation.

Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements.

Mailing Address:

Texas Instruments

Post Office Box 655303

Dallas, Texas 75265

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 may not be complete in terms of requireddesign-,marketing-,and/ormanufacturing-relatedprotective considerations, including product safety measures typically found in the end product incorporating the goods. 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 PARTICULAR PURPOSE.

The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods. Please be aware that the products received may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). Due to the open construction of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic discharge.

EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.

TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not exclusive.

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 User’s Guide prior to handling the product. This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact the TI application engineer.

Persons handling the product must have electronics training and observe good laboratory practice standards.

No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine, process, or combination in which such TI products or services might be or are used.

Mailing Address:

Texas Instruments

Post Office Box 655303

Dallas, Texas 75265

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

Contents

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-CircuitBoard and Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1

2.1

DEM-DAI3010Printed-CircuitBoard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2

2.2

DEM-DAI3010Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-5

Figures

1–1

DEM-DAI3010Block DIagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2

2–1

DEM-DAI3010Silkscreen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2

2–2

DEM-DAI3010—Top View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-3

2–3

DEM-DAI3010—Bottom View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-4

2–4

DEM-DAI3010Analog Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-5

2–5

DEM-DAI3010Regulator, Connector andExt.-I/F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-6

2–6

DEM-DAI3010Digital Section (Digital Audio Interface) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-7

 

 

Tables

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1–1

Initial Settings of the DEM-DAI3010at 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

v

Contents

vi

Chapter 1

Description

The DEM-DAI3010is an evaluation board for the PCM3010(24-bit,96-kHzADC and192-kHzDAC, stereo codec). This board includes not only the PCM3010 but also analog I/O terminals, analog filter circuits, and an S/PDIF digital I/O circuit that is useful for codec evaluation. S/PDIF I/O circuits consist of a24-bit/96-kHzdigital audio interface receiver (DIR1703) and a digital audio 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

 

 

 

1-1

Block Diagram

1.1 Block Diagram

Figure 1–1.DEM-DAI3010Block DIagram

 

System Clock

X’tal Frequency

 

 

Data Format

Clock Mode

System Clock

 

 

SW003

SW004

JP001

 

 

 

 

 

DAC Output

S/PDIF Input

 

 

JP107

L-chOutput

 

 

 

OPT. IN

SW001

 

PCM3010

LPF

 

 

 

R-chOutput

 

 

DIR1703

(Slave Only)

COAX. IN

 

 

LPF

 

 

 

 

 

 

 

ADC Input

 

 

24.576 MHz

JP105

L-ch1Vrms

 

 

 

S/PDIF Output

 

 

 

L-ch2Vrms

OPT. OUT

SW051

 

 

LPF

 

 

 

 

 

DIT4096

JP106

R-ch1Vrms

 

 

 

COAX. OUT

 

74HCT244

 

 

 

R-ch2Vrms

 

 

 

 

 

 

 

 

LPF

 

SW005

SW006

SW101

 

 

System Clock

Channel Status

System Clock

 

 

Data Format

 

Data Format

 

 

 

 

Power Down

 

± 15 V

 

LPF Circuits

 

 

5 V

 

PCM3010 VCC and DIR1703, DIT4096, TOSLINK

 

 

CN057

 

 

 

3.3 V

PCM3010 VDD

 

3.3 V

 

 

 

 

1-2

Use of the DEM-DAI3010

1.2 Use of the DEM-DAI3010

The DEM-DAI3010is shipped with standard settings preset. Therefore, connecting power supplies(15-V,–15-Vand5-V)is the only requirement to prepare the board for use, unless nonstandard settings are desired.

1.2.1Initial Settings of the DEM-DAI3010(at shipping)

Table 1–1.Initial Settings of theDEM-DAI3010at Shipping

Item

Initial Setting (at shipping)

Power supply voltage

15 V, –15V, 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-downfunction

Disabled

 

 

PCM3010 de-emphasisfunction (DAC)

Disabled

 

 

PCM3010 DAC cutoff frequency

54 kHz (JP101–JP104are closed)

 

 

PCM3010 ADC input terminal selection

CN101, CN102: 2-Vrms input (with LPF)

1.2.2How to Connect Power Supplies to the DEM-DAI3010

The DEM-DAI3010requires5-V,15-V,and–15-Vpower supplies. Power is supplied to this board by five binding posts (one each for VCC = +5 V, +AVCC = +15 V,–AVCC =–15V, and two for ground) from stabilized dc power supplies. VDD (3.3 V) for the PCM3010 is normally generated by an onboardvoltage-regulatorIC 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 the analog section of the PCM3010. To avoidlatch-upof the PCM3010, 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)

–15V

–15V

 

 

 

 

 

CN054 (red)

5

V

5

V

 

 

 

 

 

CN055 (black)

0

V (ground)

0

V (ground)

 

 

 

CN056 (2-pinconnector)

Open (no connection)

3.3 V

 

 

 

 

 

Description 1-3

Settings and Connections for Basic Operation

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 evaluation situations. Note that when using S/PDIF I/O, the optical and coaxial 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-modeswitch (SW004) to PLL or Auto.

-The cutoff frequency of the LPF can be changed by JP101, JP102, JP103, and JP104. All these jumpers are shorted at the time of shipment, which sets the cutoff frequency to 20 kHz.

When the ADC section of PCM3010 is evaluated with S/PDIF output signal (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.

-Select the analog input terminal by changing by the settings of JP105 and 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. Select the digital output connector by setting the S/PDIF output 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 = 96 kHz. To operate the ADC section at a different fS, the crystal (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.

1-4