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.
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.
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.
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Monolithic Digital Audio Interface
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Transmitter
Supports: AES/EBU, IEC 958,
S/PDIF, & EIAJ CP-340
Professional and Consumer Formats
Host Mode and Stand Alone Modes
Generates CRC Codes and Parity Bits
On-Chip RS422 Line Driver
Configurable Buffer Memory (CS8401A)
Transparent Mode Allows Direct
Connection of CS8402A and CS8412
or CS8401A and CS8411A
CS8401A
SCK
FSYNC
SDATA
6
7
8
Audio
Serial Port
INT
15
ORDERING INFORMATION:
TABLE OF CONTENTS:
MCK
5
Prescaler
page 30
page 31
20
CS
RD/WR
A4 - A0
5
D7- D0
8
14
16
MUX
Configurable
Buffer
Memory
RS422 Driver
17
TXP
TXN
CS8402A
SCK
FSYNC
SDATA
6
7
8
M2
23
M1
22
M0
21
MCK
5
RST
16
Audio
Serial Port
MUX
RS422 Driver
20
17
TXP
TXN
C
U
V
10
11
9
Registers
7
15
Dedicated Channel
Status Bits
CBL
24
TRNPT
Crystal Semiconductor Corporation
P.O. Box 17847, Austin, TX 78760
(512) 445-7222 FAX: (512) 445-7581
NOV 鈥?3
DS60F1
1
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