Texas Instruments TAS5121 Manual de usuario

TAS5508−5121K8EVM

Evaluation Module for the TAS5508B 8-Channel

Digital Audio PWM Processor and the TAS5121

Digital Amplifier Power Output Stage

User’s Guide

IMPORTANT NOTICE

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accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI

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Post Office Box 655303 Dallas, Texas 75265

EVALUATION BOARD/KIT IMPORTANT NOTICE

Texas Instruments (TI) provides the enclosed product(s) under the following conditions:.

This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR

EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end−product fit for general

consumer use. Persons handling the product(s) must have electronics training and observe good engineering

practice standards. As such, the goods being provided are not intended to be complete in terms of required

design−, marketing−, and/or manufacturing−related protective considerations, including product safety and

environmental measures typically found in end products that incorporate such semiconductor components or

circuit boards. This evaluation board/kit does not fall within the scope of the European Union directives regarding

electromagnetic compatibility, restricted substances (RoHS), recycling (WEEE), FCC, CE or UL, and therefore

may not meet the technical requirements of these directives or other related directives.

Should this evaluation board/kit not meet the specifications indicated in the User’s Guide, the board/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. 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 User’s Guide and, specifically, the Warnings and Restrictions notice in the User’s Guide prior

to handling the product. This notice contains important safety information about temperatures and voltages. For

additional information on TI’s environmental and/or safety programs, please contact the TI application engineer

or visit www.ti.com/esh.

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.

FCC WARNING

This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR

EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end−product fit for general

consumer use. It generates, uses, and can radiate radio frequency energy and has not been tested for

compliance with the limits of computing devices pursuant to 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.

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 0–29.5 V and the output

voltage range of 15–20 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

75°C. The EVM is designed to operate properly with certain components above 75°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

iii

Read This First

Preface

Read This First

About This Manual

This manual describes the operation of the TAS5508−5121K8EVM evaluation

module from Texas Instruments.

How to Use This Manual

This document contains the following chapters:

-Chapter 1 — Overview

-Chapter 2 — System Interfaces

-Chapter 3 — Protection

Information About Cautions and Warnings

This manual 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.

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

TAS5508−5121K8EVM. The data manuals can be obtained at the URL

http://www.ti.com.

Part Number Literature Number

TAS5508B SLES162

TAS5121 SLES086

TLV272 SLOS351

SN74LVC1G00 SCES212

SN74LVC1G08 SCES217

SN74LVC2G08 SCES198

SN74LVC1G14 SCES218

SN74LV123A SCLS393

SN74LVC125A SCAS290

SN74LVC1G126A SCES211

LM317M SLVS297

TPS3801K33 SLVS219

TPS76733 SLVS208

Additional Documentation

TAS5508−5121K8EVM Application Report (SLEA034A)

PC Configuration Tool for TAS5508B (TAS5508 GUI ver.2.1 or later)

General Application Notes

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, PowerPAD, and PurePath Digital are trademarks of Texas

Instruments.

Contents

1 Overview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1 TAS5508−5121K8EVM Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 PCB Key Map 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 System Interfaces 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1 Power Supply (PSU) Interface (J70, J71, and J73) 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1.1 PSU Control Interface (J72) 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2 Loudspeaker Connectors (J100 . . . J800) 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3 Line Out Connectors (J950 and J951) 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.4 Headphone Connector (J900) 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.5 Line Output Select (J50) 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.6 Headphone Select (J32) 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.7 Control Interface (J30) 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.8 Digital Audio Interface (J40) 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Protection 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1 Short-Circuit Protection and Fault-Reporting Circuitry 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2 Device Fault Reporting 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figures

1−1 Integrated PurePath DigitaltAmplifier System 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1−2 Physical Structure for the TAS5508−5121K8EVM (Rough Outline) 1-3. . . . . . . . . . . . . . . . . . .

2−1 Recommended Power-Up Sequence 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−2 J71 and J70 Pin Numbers 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−3 J73 Pin Numbers 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−4 J72 Pin Numbers 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−5 J100 . . . J800 Pin Numbers 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−6 J950 and J951 Pin Numbers 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−7 J900 Pin Numbers 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−8 J50 Pin Numbers 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−9 J32 Pin Numbers 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tables

2−1 Recommended Supply Voltages 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−2 J71 Pin Description 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−3 J70 Pin Description 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−4 J73 Pin Description 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−5 J72 Pin Description 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−6 J100 . . . J800 Pin Description 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−7 J950 and J952 Pin Description 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−8 J900 Pin Description 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−9 J50 Pin Description 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−10 J32 Pin Description 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−11 J30 Pin Description 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2−12 J40 Pin Description 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3−1 Channel Allocation 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3−2 TAS5121 Warning/Error Signal Decoding 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1

Overview

The TAS5508−5121K8EVM PurePath Digital™customer evaluation amplifier

module demonstrates two audio integrated circuits, TAS5508B and TAS5121,

from Texas Instruments (TI).

The TAS5508BPAG is a high-performance 32-bit (24-bit input) multichannel

PurePath Digital pulse width modulator (PWM) based on Equibit™technology,

with a new fully symmetrical AD modulation scheme. It accepts an input

sample rate from 32 kHz to 192 kHz. The device also has digital audio

processing (DAP) that provides 48-bit signal processing, advanced

performance, and a high level of system integration. The device has interfaces

for headphone output and power supply volume control (PSVC).

The TAS5121DKD is a compact, high-power, digital amplifier power stage

designed to drive a 4-Ωloudspeaker up to 100 W (10% THD+N). The

TAS5121DKD contains integrated gate drivers, four matched and electrically

isolated enhancement-mode N-channel power DMOS transistors, and

protection/fault-reporting circuitry.

The DKD package has a PowerPAD™on the top side for heat transfer through

a heatsink. The heatsink in this design is for evaluation purpose only.

This EVM, together with a TI input board, is a complete 8-channel digital audio

amplifier system, which includes digital input (S/PDIF), analog inputs,

interface to PC, and DAP features, such as digital volume control, input and

output mixers, auto mute, equalization, tone controls, loudness, dynamic

range compression, and PSVC output. There are configuration options for

stereo line level output, stereo headphone output, and power-stage failure

protection.

This 7.1 system is designed for home-theater applications, such as A/V

receivers, DVD minicomponent systems, home theater in a box (HTIB), DVD

receivers, or plasma display panels (PDPs).

Topic Page

1.1 TAS5508−5121K8EVM Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 PCB Key Map 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 1

TAS5508−5121K8EVM Features

1-2

1.1 TAS5508−5121K8EVM Features

-8-channel PurePath Digital evaluation module

-Stereo channel line output

-Stereo headphone output

-Self-contained protection system (short circuit and thermal)

-Standard I2S and I2C control connector for TI input board

-Double-sided plated-through PCB layout

Figure 1−1. Integrated PurePath DigitalEAmplifier System

I2S Bus

TAS5508−5121K8EVM

Module

I2C Bus

Example

Texas Instruments

Input−PC Board

Control Interface

Power Supply

8 Channel

Speaker Output

2 Channel

Rec Line Output

2 Channel

Headphone Output

6 Channel

Analog Input

PC Interface

Optical

and

Coaxial

S/PDIF Input

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