Texas Instruments SRC4194EVM Manuale utente



 

July 2004

User’s Guide

SBAU096

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

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.

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 absolute operating conditions shown in

Table 2−1.

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

+70°C. The EVM is designed to operate properly with certain components above +70°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

Contents

iii

Contents

Preface

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About This Manual

This document contains the information required to setup and operate the

SRC4194EVM evaluation module. For a more detailed description of the

SRC4194, please refer to the product datasheet available from the Texas In-

struments web site at http://www.ti.com. Additional support documents are

listed in the sections of this guide entitled Related Documentation from Tex-

as Instruments and Additional Documentation.

How to Use This Manual

Throughout this document, the term EVM and the phrase evaluation module

are synonymous with the SRC4194EVM.

Chapter 1 provides a product overview for the SRC4194 four-channel asyn-

chronous sample rate converter. The SRC4194EVM block diagram and pri-

mary features are also discussed.

Chapter 2 provides general information regarding EVM handling and unpack-

ing, as well as absolute operating conditions for power supplies and input/out-

put connections.

Chapter 3 provides general hardware descriptions and configuration informa-

tion for the EVM. The information in this chapter is designed to guide the user

in the setup of the EVM.

Chapter 4 includes the EVM electrical schematic, printed circuit board (PCB)

layout, and the bill of materials

Contents

Information About Cautions

This document contains cautions. The information in a caution is provided for

your protection. Please read each caution carefully.

This is an example of a caution statement.

A caution statement describes a situation that could potentially

damage your software or equipment.

Contents

Related Documentation From Texas Instruments

The following documents provide information regarding Texas Instrument inte-

grated circuits used in the assembly of the SRC4194EVM. These documents

are available from the TI web site at http://www.ti.com. The last character of

the literature number corresponds to the document revision, which is current

at the time of the writing of this User’s Guide. Newer revisions may be available

from the TI web site, or by calling the Texas Instruments Literature Response

Center at (800) 477−8924 or the Product Information Center at (972)

644−5580. When ordering, identify the document(s) by both title and literature

number.

Data Sheets: Literature Number:

SRC4194 SBFS025A

DIT4192 SBOS229B

PLL1705 SLES046A

REG1117 SBVS001B

SN74ALVC125 SCES110E

SN74ALVC244 SCES188B

SN74ALVC245 SCES271B

SN74LVC1G04 SCES214M

SN74LVC1G08 SCES217L

SN74LVC244A SCAS414U

Additional Documentation

The following documents or references provide information regarding se-

lected non-TI components used in the assembly of the SRC4194EVM. These

documents are available from the corresponding manufacturer.

Document: Manufacturer:

CS8414 Data Sheet Cirrus Logic, web site: http://www.cirrus.com

HCM49 Series Crystals Citizen, web site: http://www.citizencrystals.com

Contents

If You Need Assistance

If you have questions regarding either the use of this evaluation module or the

information contained in the accompanying documentation, please contact

the Texas Instruments Product Information Center at (972) 644−5580 or visit

the TI Semiconductor Online Technical Support pages at http://www.ti.com.

FCC Warning

This equipment is intended for use in a laboratory test environment only. It may

generate, use, or radiate radio frequency energy and has not been tested for

compliance with the limits of computing devices pursuant to sub−part J of part

15 of the FCC regulations, which are designed to provide reasonable protec-

tion 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

All trademarks are the property of their respective owners.

Contents

vii

Contents

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

1.1 SRC4194 Product Overview 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 SRC4194 Functional Block Diagram 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 SRC4194EVM Features 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4 SRC4194EVM Functional Block Diagram 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Getting Started 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1 Electrostatic Discharge Warning 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2 Unpacking the EVM 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3 Absolute Maximum Operating Conditions 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Hardware Description and Configuration 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

3.2 SRC4194 Configuration Modes 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.1 SRC4194 Hardware (or Standalone) Mode Configuration 3-4. . . . . . . . . . . . . . . . .

3.2.2 SRC4194 Software Mode Configuration Via The Host Port 3-6. . . . . . . . . . . . . . . .

3.3 Audio Input Ports 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4 Audio Output Ports 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.5 Reference Clock Generation 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.6 TDM Test Mode 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 Schematic, PCB Layout, and Bill of Materials 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1 Schematic 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2 PCB Layout 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.3 Bill of Materials 4-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents

viii



1−1. SRC4194 Functional Block Diagram 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1−2. SRC4194EVM Functional Block Diagram 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3−1. SRC4194EVM Power Supply Configuration and Jumpers 3-2. . . . . . . . . . . . . . . . . . . . . . . . . .

3−2. Input Port External Connections and Configuration 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3−3. Output Port External Connections and Configuration 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3−4. Reference Clock Generation, Connections, and Configuration 3-10. . . . . . . . . . . . . . . . . . . . .

4−1. SRC4194EVM Schematic Diagram, Page 1 of 2 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4−2. SRC4194EVM Schematic Diagram, Page 2 of 2 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4−3. Top Side Silk Screen 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4−4. Bottom Side Silk Screen 4-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4−5. Top Layer (Component Side) 4-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4−6. Ground Plane Layer 4-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4−7. Power Layer 4-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4−8. Bottom layer (Solder Side) 4-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



2−1. Absolute Operating Conditions 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3−1. Common Configurations using a +5V Supply and an Optional EXT VIO Supply 3-3. . . . . . . .

3−2. Setting the Configuration Mode 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3−3. Hardware Mode Setup Matrix Using Switches SW1, SW2, SW4 and SW5 (x = A or B) 3-5

3−4. Transmitter Clock Divider Configuration 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3−5. Transmitter Stereo/Mono Mode Configuration 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3−6. PLL Configuration for U25 and U28 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4−1. Bill of Materials 4-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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