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CS8402A-CS

Digital Audio Interface Transmitter

Cirrus Logic 

Semiconductor Corporation

CS8401A CS8402A

Digital Audio Interface Transmitter

Features

General Description

• Monolithic Digital Audio Interface

The CS8401/2A are monolithic CMOS devices which

encode and transmit audio data according to the

Transmitter

AES/EBU, IEC 958, S/PDIF, & EIAJ CP-340 interface

• Supports: AES/EBU, IEC 958,

S/PDIF, & EIAJ CP-340

standards. The CS8401/2A accept audio and digital

data, which is then multiplexed, encoded and driven

onto a cable. The audio serial port is double buffered

Professional and Consumer Formats and capable of supporting a wide variety of formats.

• Host Mode and Stand Alone Modes

• Generates CRC Codes and Parity Bits

The CS8401A has a configurable internal buffer mem-

ory, loaded via a parallel port, which may be used to

buffer channel status, auxiliary data, and/or user data.

• On-Chip RS422 Line Driver

The CS8402A multiplexes the channel, user, and valid-

ity data directly from serial input pins with dedicated

• Configurable Buffer Memory (CS8401A) input pins for the most important channel status bits.

• Transparent Mode Allows Direct

Connection of CS8402A and CS8412

or CS8401A and CS8411A

ORDERING INFORMATION:

TABLE OF CONTENTS:

page 30

page 31

CS8401A

SCK 6

FSYNC 7

SDATA 8

Audio

Serial Port

INT

15

CS 14

RD/WR 16

Configurable

Buffer

A4 - A0

5

Memory

D7- D0

8

MUX

MCK

5

Prescaler

RS422 Driver

20 TXP

17

TXN

CS8402A

SCK 6

FSYNC 7

SDATA 8

C 10

U 11

V9

M2 M1 M0

23 22 21

Audio

Serial Port

Registers

MUX

7

MCK

5

RST

16

RS422 Driver

20 TXP

17 TXN

Dedicated Channel

Status Bits

15

24

CBL TRNPT

Crystal Semiconductor Corporation

P.O. Box 17847, Austin, TX 78760

(512) 445-7222 FAX: (512) 445-7581

NOV ’93

DS60F1

1

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