CS8405A
96 kHz Digital Audio Interface Transmitter
Features
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.
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
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 28-pin SOIC
CS8405A-CZ 28-pin TSSOP -10 to +70°C
CS8405A-IS 28-pin SOIC -40 to +85°C
CS8405A-IZ 28-pin TSSOP -40 to +85°C
CDB8415A Evaluation Board
-10 to +70°C
I
VL+ DGND
VD+
RXP
TXP
TXN
C & U bit
Data
Buffer
AES3
S/PDIF
Encoder
Driver
ILRCK
ISCLK
SDIN
Serial
Audio
Input
Control
Port &
Registers
Output
Clock
Generator
Misc.
Control
H/S RST
U
TCBL SDA/
SCL/ AD1/ AD0/ AD2 INT
OMCK
CDOUT CCLK CDIN CS
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Preliminary Product Information
Cirrus Logic, Inc.
Copyright Cirrus Logic, Inc. 2002
(All Rights Reserved)
JUN ‘02
DS469PP4
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
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