CS8401A CS8402A
Semiconductor Corporation
Digital Audio Interface Transmitter
Features
General Description
The CS8401/2A are monolithic CMOS devices which
encode and transmit audio data according to the
AES/EBU, IEC 958, S/PDIF, & EIAJ CP-340 interface
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
and capable of supporting a wide variety of formats.
Monolithic Digital Audio Interface
•
Transmitter
Supports: AES/EBU, IEC 958,
•
S/PDIF, & EIAJ CP-340
Professional and Consumer Formats
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.
Host Mode and Stand Alone Modes
•
Generates CRC Codes and Parity Bits
•
The CS8402A multiplexes the channel, user, and valid-
ity data directly from serial input pins with dedicated
input pins for the most important channel status bits.
On-Chip RS422 Line Driver
•
Configurable Buffer Memory (CS8401A)
•
Transparent Mode Allows Direct
Connection of CS8402A and CS8412
or CS8401A and CS8411A
•
ORDERING INFORMATION:
TABLE OF CONTENTS:
page 30
page 31
INT
MCK
5
CS8401A
15
6
SCK
Audio
7
Prescaler
FSYNC
Serial Port
8
SDATA
20
17
TXP
TXN
14
MUX
RS422 Driver
CS
Configurable
Buffer
16
RD/WR
A4 - A0
Memory
5
8
D7- D0
M2 M1 M0
MCK
5
RST
16
CS8402A
22
23
21
6
7
8
SCK
FSYNC
SDATA
Audio
Serial Port
20
17
TXP
TXN
MUX
RS422 Driver
10
11
9
C
U
V
7
Registers
15
CBL
24
Dedicated Channel
Status Bits
TRNPT
Crystal Semiconductor Corporation
P.O. Box 17847, Austin, TX 78760
(512) 445-7222 FAX: (512) 445-7581
NOV ’93
DS60F1
1