
1
Copyright
Cirrus Logic, Inc. 2004
(All Rights Reserved)
www.cirrus.com
CS8406
192 kHz Digital Audio Interface Transmitter
Features
Complete EIAJ CP1201, IEC-60958, AES3,
S/PDIF compatible transmitter
+3.3 V or 5.0 V Digital Supply (VD)
+3.3 V or 5.0 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 192 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
28-pin SOIC/TSSOP package
General Description
The CS8406 is a monolithic CMOS device which en-
codes and transmits audio data according to the AES3,
IEC60958, S/PDIF, or EIAJ CP1201. The CS8406 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
input port. The channel status and user bit data are input
through an SPI or I2C microcontroller port, and may be
assembled in block sized buffers. For systems with no
microcontroller, a stand alone mode allows direct ac-
cess 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
CS8406-CS
CS8406-CZ
CS8406-IS
CS8406-IZ
CS8406-DS
CS8406-DZ
CDB84
1
6
28-pin SOIC
28-pin TSSOP -10 to +70°C
28-pin SOIC
28-pin TSSOP -40 to +85°C
28-pin SOIC
28-pin TSSOP -40 to +85°C
Evaluation Board
-10 to +70°C
-40 to +85°C
-40 to +85°C
I
Serial
Audio
Input
Misc.
Control
AES3
S/PDIF
Encoder
C & U bit
Data
Buffer
Control
Port &
Registers
Output
Clock
Generator
RXP
ILRCK
ISCLK
SDIN
TXP
TXN
RST
OMCK
U
SDA/
CDOUT
SCL/
CCLK
AD1/
CDIN
AD0/
CS
INT
VL
GND
Driver
AD2
H/S
VD
TCBL
JUL ‘04
DS580F1