Texas Instruments DEM-DAI1802 Manuale utente

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March 2002 DAV Digital Audio/Imaging Japan (DAL)

User’s Guide

SLEU017

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

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and conditions of sale supplied at the time of order acknowledgment.

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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.

TIdoesnotwarrantorrepresentthatanylicense, eitherexpress orimplied, isgranted underanyTIpatentright,

inwhichTIproductsorservicesareused.InformationpublishedbyTIregardingthird–partyproductsorservices

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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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:

Thisevaluationkit being soldbyTI is intendedforuse 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.

ShouldthisevaluationkitnotmeetthespecificationsindicatedintheEVMUser’sGuide,thekitmaybe 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,ORSTATUTORY,INCLUDINGANYWARRANTY OFMERCHANTABILITYORFITNESSFORANY

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

receivedmaynotberegulatorycompliant oragency certified (FCC,UL, CE,etc.). Dueto theopen construction

oftheproduct,itistheuser’sresponsibilitytotakeanyandallappropriateprecautionswithregardtoelectrostatic

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’sGuidepriortohandlingtheproduct.Thisnoticecontainsimportantsafetyinformationabouttemperatures

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 "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

Related Documentation From Texas Instruments

Preface

Read This First

About This Manual

Thisuser’sguidedescribestheconstructionandcircuitryoftheDEM-DAI1802

demonstration board. It also contains instructions for connecting and setting

up the DEM-DAI1802 for operation.

How to Use This Manual

This document contains the following chapters:

Chapter 1 –Description

Chapter 2 –Schematics and Printed-Circuit Board

Related Documentation From Texas Instruments

PCM1802 Single-Ended Analog-Input 24-Bit, 96-kHz Stereo A/D Converter –

Literature No. SLES023

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

testedforcompliancewiththelimitsofcomputingdevicespursuanttosubpart

Jofpart15ofFCCrules,which aredesignedtoprovidereasonableprotection

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.

Contents

vii

Contents

1 Description 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1 Block Diagram 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 DEM-DAI1802 Basic Connection and Operation 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2.1 Configuration Controls 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Schematics and Printed-Circuit Board 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1 DEM-DAI1802 Printed-Circuit Board 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2 DEM-DAI1802 Schematics 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figures

1–1 DEM-DAI1802 Block Diagram 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–2 Digital Signal I/F to PCM1802 (JP052) 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–1 DEM-DAI1802 Silkscreen 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–2 DEM-DAI1802 Top View 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–3 DEM-DAI1802 Bottom View 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–4 DEM-DAI1802 Analog Section Schematic Diagram 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–5 DEM-DAI1802 A/D Converter Section Schematic Diagram 2-6. . . . . . . . . . . . . . . . . . . . . . . . .

2–6 DEM-DAI1802 Regulator and Connector Schematic Diagram 2-6. . . . . . . . . . . . . . . . . . . . . . .

2–7 DEM-DAI1802 Digital Section (Digital Audio Interface) Schematic Diagram 2-7. . . . . . . . . . .

Contents

viii

Tables

1–1 Analog Input Selection (JP101/102)—CN101/102 for 2 V RMS,

CN103/104 for 1 V RMS 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–2 PCM1802: HPF Bypass Control (SW051) 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–3 PCM1802: Oversampling Control (SW051)—64 fSor 128 fS1-3. . . . . . . . . . . . . . . . . . . . . . . .

1–4 PCM1802: Master/Slave and Oversampling Rate Selection

(JP002/004/052 and SW002/051) 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–5 System-Clock Dividing Ratio for MCK: 128 fS-CS8404 (JP001) 1-3. . . . . . . . . . . . . . . . . . . . .

1–6 Bit-Clock Dividing Ratio (JP002) 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–7 LR-Clock Dividing Ratio (JP004) 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–8 Data Format Selection (JP003 and SW051) 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–9 System Clock Source Selection (JP005)—Internal Clock: X001/24.576 MHz,

External Clock Input: CN001 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–10 Manual Reset (SW003) 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–11 S/PDIF Transmitter Format: CS8404 Configuration (SW004) 1-5. . . . . . . . . . . . . . . . . . . . . . . .

1-1

Description

The DEM-DAI1802 is an evaluation board for the 96-kHz 24-bit PCM audio

A/Dconverter, PCM1802, with digitalaudiotransmitter,mode controls switch,

onboard oscillator, –6 dB amplifier, and LPF.

The DEM-DAI1802 operates from 5 V and ±15 V analog power supplies with

a 1-V RMS or 2-V RMS unbalanced analog signal input.

Topic Page

1.1 Block Diagram 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 DEM-DAI1802 Basic Connection and Operation 1-2. . . . . . . . . . . . . . . . . .

Chapter 1

Block Diagram

1-2

1.1 Block Diagram

Figure 1–1.DEM-DAI1802 Block Diagram

Format Control

ADC

PCM1802

+5V–15V

SW051

OPT

COAX

JUMPER

+5 V

External–I/F

(CN002)

R–ch

L–ch

L/R–ch

FSYNC

BCLK

SCLK

DOUT

LRCK

24.576 MHz

DIT

CS8404

and

Logic

DAI

(BUS)

Select

and

Divider

3.3 V

REG.

+VDD

GND GND GND +15V

Sel.

For 2VRMS Input

–6 dB Amp.

and

2nd-Order LPF

OPA2134 R–ch

L–ch

1.2 DEM-DAI1802 Basic Connection and Operation

-Connect the 5.0-V and ±15-V power supplies to the VCC, AVCC, –AVCC,

andGNDonconnectorsCN051–CN055.The±15-Vsuppliesarerequired

only for 2-V RMS input.

-Connect the S/PDIF output to CN003 (COAX) or U001 (OPT).

-Ensure the presence of a system clock, supplied from the onboard

oscillator or external input clock connector (CN001) through

switch/jumper to PCM1802.

-Set the data format using SW001, JP003, and SW051.

-Select the master or slave mode using SW002, SW051, JP002, JP004,

and JP052.

1.2.1 Configuration Controls

Table 1–1.Analog Input Selection (JP101/102)—CN101/102 for 2 V RMS,

CN103/104 for 1 V RMS

Input Jumper-Pin Position

1-V RMS Direct-IN

2-V RMS –6dB/LPF

Table 1–2.PCM1802: HPF Bypass Control (SW051)

HPF Bypass BYPAS (SW051)

Enable H

Disable L

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