CS8405A
96 kHz Digital Audio Interface Transmitter
Features
Complete EIAJ CP1201, IEC-60958, AES3,
S/PDIF compatible transmitter
+5 V Digital Supply(VD)
+3 V to 5 V Digital Interface (VL)
On-chip Channel Status and User bit buffer
memories allow block sized updates
Flexible 3-wire serial digital audio input port
Up to 96 kHz frame rate
Microcontroller write access to Channel
Status and User bit data
On-chip differential line driver
Generates CRC codes and parity bits
Standalone mode allows use without a
microcontroller
General Description
The CS8405A is a monolithic CMOS device which en-
codes and transmits audio data according to the AES3,
IEC60958, S/PDIF, or EIAJ CP1201. The CS8405A ac-
cepts audio and digital data, which is then multiplexed,
encoded and driven onto a cable.
The audio data is input through a configurable, 3-wire in-
put port. The channel status and user bit data are input
through an SPI or Two-Wire microcontroller port, and
may be assembled in block sized buffers. For systems
with no microcontroller, a stand alone mode allows di-
rect access to channel status and user bit data pins.
Target applications include A/V Receivers, CD-R, DVD
receivers, digital mixing consoles, effects processors,
set-top boxes, and computer and automotive audio
systems.
ORDERING INFORMATION
CS8405A-CS
CS8405A-CZ
CS8405A-IS
CS8405A-IZ
CDB8415A
28-pin SOIC
-10 to +70°C
28-pin TSSOP -10 to +70°C
28-pin SOIC
-40 to +85°C
28-pin TSSOP -40 to +85°C
Evaluation Board
VL+ DGND
I
VD+
RXP
C & U bit
Data
Buffer
AES3
S/PDIF
Encoder
TXP
Driver
TXN
ILRCK
ISCLK
SDIN
Serial
Audio
Input
Misc.
Control
H/S
RST
Control
Port &
Registers
Output
Clock
Generator
U TCBL SDA/
SCL/ AD1/ AD0/ AD2 INT
CDOUT CCLK CDIN CS
OMCK
Preliminary Product Information
Cirrus Logic, Inc.
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright Cirrus Logic, Inc. 2002
(All Rights Reserved)
JUN ‘02
DS469PP4
1
©
CIRRUS [ CIRRUS LOGIC ]
