Texas Instruments TAS5001-5122C2EVM Manual de usuario



     

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   ! "# 

June 2004 DAV Digital Audio/Speaker

User’s Guide

SLEU055

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,

in which TI products or services are used. Information published by TI regarding third-party products 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

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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.

Following are URLs where you can obtain information on other Texas Instruments products and application

solutions:

Products Applications

Amplifiers amplifier.ti.com Audio www.ti.com/audio

Data Converters dataconverter.ti.com Automotive www.ti.com/automotive

DSP dsp.ti.com Broadband www.ti.com/broadband

Interface interface.ti.com Digital Control www.ti.com/digitalcontrol

Logic logic.ti.com Military www.ti.com/military

Power Mgmt power.ti.com Optical Networking www.ti.com/opticalnetwork

Microcontrollers microcontroller.ti.com Security www.ti.com/security

Telephony www.ti.com/telephony

Video & Imaging www.ti.com/video

Wireless www.ti.com/wireless

Mailing Address: Texas Instruments

Post Office Box 655303 Dallas, Texas 75265

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 required design-, marketing-, and/or manufacturing-related protective

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

EVM WARNINGS AND RESTRICTIONS

It is important to operate this EVM within the input voltage range of 0 V to 25 V for the output

stage and 15 V to 20 V for the system supply.

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

60°C. The EVM is designed to operate properly with certain components above 60°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

Information About Cautions and Warnings

iii

Preface



About This Manual

This manual describes the operation of the TAS5001−5122C2EVM evaluation

module from Texas Instruments.

How to Use This Manual

This document contains the following chapters:

-Chapter 1 – Overview

-Chapter 2 – Detailed Description of the EVM Board

-Chapter 3 – EVM Board Operation

-Chapter 4 – Hints for Measurements of Performance

Information About Cautions and Warnings

This book may contain cautions and warnings.

This is an example of a caution statement.

A caution statement describes a situation that could potentially

damage your software or equipment.

This is an example of a warning statement.

A warning statement describes a situation that could potentially

cause harm to you.

Trademarks

The information in a caution or a warning is provided for your protection.

Please read each caution and warning carefully.

Related Documentation From Texas Instruments

The following table contains a list of data manuals that have detailed

descriptions of the integrated circuits used in the design of the

TAS5001−5122C2EVM. The data manuals can be obtained at the URL

http://www.ti.com.

Part Number Literature Number

TAS5001IPFB SLES009

TAS5122DCA SLES088

TAS3002PFB SLAS307

DIR1703E SLES007

LMV331IDBVR SLCS136

TPS3705−33DGN SLVS184

SN74LVC2GU04DBVR SCES197

SN74LVC2G14DBVR SCES200

SN74LVC2G08DCTR SCES198

SN74LVC1G02DBVR SCES213

SN74LVC1G32DBVR SCES219

SN74LV21APWR SCES340

Additional TAS5001−5122C2EVM Documentation

-DCT Software and User’s Guide for Controlling the TAS3002

-TAS5001−5122C2EVM Application Report (SLEA035)

-Data Manuals

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

case the user at his own expense will be required to take whatever measures

may be required to correct this interference.

Trademarks

Equibitand PurePath Digitalare trademarks of Texas Instruments.

Contents



1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1 TAS5001−5122C2EVM Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Detailed Description of the EVM 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1 Board Overview 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2 Description of Jumper Settings 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2.1 Double−Speed Control (JMP120) 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2.2 Enable/Disable S/PDIF−MUTE (JMP130) 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2.3 Bypassing Equalizer Functions in the Digital Audio Processor (JMP360) 2-3. . . .

2.3 Default Jumper Positioins 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.4 Description of Connectors 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.4.1 S/PDIF Digital Audio Coaxial/RCA Input (J100) 2-4. . . . . . . . . . . . . . . . . . . . . . . . . .

2.4.2 S/PDIF Optical (J101) 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.4.3 Analog input (J160) and Analog Output (J170) 2-4. . . . . . . . . . . . . . . . . . . . . . . . . .

2.4.4 PC and I2C Interface (J300) 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.4.5 Loudspeaker Connectors (J540, J541, J580, and J581) 2-6. . . . . . . . . . . . . . . . . .

2.4.6 Power Supply Connector 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.5 Description of Switches and Buttons 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.5.1 S/PDIF Input Selector Switch (S100) 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.5.2 Bypass Digital Audio Processor Switch (S320) 2-7. . . . . . . . . . . . . . . . . . . . . . . . . .

2.5.3 Reset Board Button (S620) 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.5.4 Mute Button (S240) 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.5.5 Volume Control (S340 and S341) 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.6 Description of Indicators 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.6.1 Power LED (LED223) 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.6.2 No S/PDIF Input LED (LED222) 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.6.3 Temperature Warning LED (LED221) 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.6.4 Protection Mode LED (LED220) 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 EVM Board Operation 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1 Power Supply 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1.1 Power the EVM by One Power Supply 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1.2 Power the EVM With Two Power Supplies 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2 Setup the TAS5001−5122C2EVM With the S/PDIF Input 3-3. . . . . . . . . . . . . . . . . . . . . . . . .

3.2.1 Start-up Sequence 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3 Setup the TAS5001−5122C2EVM With the Analog Line Input 3-4. . . . . . . . . . . . . . . . . . . . .

3.4 Interfacing the Analog Line Output 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.5 Controlling the DAP With PC Software 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 Hints for Measurement of Performance 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents



1−1 Simplified TAS5001−5122C2EVM Block Diagram 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−1 Board Outline With Connectors, Switches, Jumpers, and Indicators 2-2. . . . . . . . . . . . . . . . . .

2−2 Physical Structure for the TAS5001−5122C2EVM 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−3 Default Jumper Positions 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−4 Pin Numbers at the Line Input/Output Connector (Top View) 2-4. . . . . . . . . . . . . . . . . . . . . . . .

2−5 Pin Numbers at the Parallel Port/I2C Interface/I2C (J300) 2-5. . . . . . . . . . . . . . . . . . . . . . . . . .

2−6 Pin Numbers at PSU Connector (Top View) 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3−1 Recommended Power-Up and Power-Down Sequence 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . .

3−2 EVM Board Connected to S/PDIF Sources and Personal Computer 3-3. . . . . . . . . . . . . . . . .



2−1 Description of J160 and J170 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−2 Description of J300 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−3 Description of Loudspeaker Connectors 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−4 Description of PSU Connector 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3−1 Maximum Supply Voltage (Single Supply) 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3−2 Maximum H-bridge Voltage vs Load Impedance 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1

Introduction



The TAS5122DCA PurePath Digitalcustomer evaluation module

demonstrates two integrated circuits (IC), the TAS5001 and the TAS5122DCA

from Texas Instruments. The TAS5001 is a high performance 24-bit stereo

digital modulator based on Equibittechnology. This IC converts input PCM

serial digital audio data to a pulse width modulated (PWM) audio data stream.

The TAS5001 PWM modulator accepts I2S data with a sample rate up to

96 kHz. The TAS5001 is designed for implementation together with the

TAS5122DCA digital output stage for driving two loudspeakers in a stereo

application.

The TAS5001 is pin-compatible with the TAS5010 PCM−PWM modulator. The

maximum sample rate for the TAS5010 is 192 kHz.

Together, the TAS5001 and one TAS5122DCA provide the complete PurePath

DigitalTM conversion of a 3.3-V digital audio input stream up to 2x30 W into 6-Ω

loudspeakers. The chipset is ideal for applications requiring excellent audio

quality, minimum size and weight, and high power efficiency. The chipset can

be used in a range of products such as micro-components systems, home

theater in a box, DVD receivers, or TV sets.

The TAS5001−5122C2EVM is a complete true digital amplifier including an

S/PDIF receiver, I2S audio interface, volume control, interface to personal

computer through the parallel port, and required control logic. The amplifier

reference design is surrounded by a white line on the PCB.

Topic Page

1.1 TAS5001−5122C2EVM Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 1

TAS5001−5122C2EVM Features

1-2

1.1 TAS5001−5122C2EVM Features

-PurePath Digitalreference design (double-sided plated-through PCB

layout)

-S/PDIF receiver with coaxial and optical input (sampling rate = 32 kHz –

96 kHz)

-I2S audio interface (sampling rate: 32 kHz – 96 kHz)

-On board volume control

-Auto-mute function

-Self-contained short circuit and temperature protection system

-Digital audio processor (DAP), which include 24-bit volume control, digital

gain, bass and treble control, parametric equalization, dedicated speaker

equalization, loudness control, and adjustable dynamic range

compression/expansion.

-DAP control through PC software (DCT software from Texas Instruments)

-Default DAP settings is downloaded to an EEPROM with the DCT

software

-Analog line input (use internal analog-to-digital converter in DAP)

-Analog line output (use internal digital-to-analog converter in DAP)

Figure 1−1.Simplified TAS5001−5122C2EVM Block Diagram

DIR1703

S/PDIF

RECEIVER

PARRALLEL

PORT

INTERFACE

I2S INTERFACE

TAS5001

DIGITAL AUDIO

PWM PROCESSOR

TAS5122DCA

DIGITAL AUDIO

PWM POWER

OUTPUT STAGE

I2C BUS

I2S BUS

PC SOFTWARE

OPTICAL INPUT

COAXIAL INPUT

I2S INPUT

32 kHz − 96 kHz

32 kHz − 192 kHz

ANALOG INPUT

ANALOG OUTPUT

VOLUME

CONTROL

TAS3002

DIGITAL AUDIO

PROCESSOR

The DIR1703 IC from Texas Instruments/Burr-Brown is used as S/PDIF

receiver and system clock generator. This product is a digital audio interface

receiver (DIR) that receives and decodes audio data up to 96-kHz sampling

rate. DIR1703 is running in a configuration where it automatically switches

between PLL mode and crystal mode. When the DIR1703 is connected to an

active digital source, it is running in PLL-mode. The system clock (SCKO)

frequency depends on the incoming sampling rate (fs): SCKO = 256 x fs. When

no digital source is represented, the DIR1703 switches to crystal mode. The

system clock frequency in crystal mode depends on the external crystal

connected to the DIR1703 receiver. On the TAS5001−5122C2EVM board, the

crystal-mode system clock is 12.288 MHz.

Crystal-mode operation is used to generate a fixed clock when the

TAS5001−5122C2EVM board is connected to an analog source. The external

anti-aliasing filter for the A/D converter is optimized to 48-kHz sampling rates.

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