CS8405A
96 kHz Digital Audio Interface Transmitter
Features
Complete EIAJ CP1201, IEC-60958, AES3,
S/PDIF-compatible Transmitter
+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 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
I²C
microcontroller port, and may be
assembled in block-sized buffers. For systems with no
microcontroller, a standalone mode allows direct 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 or automotive audio
systems.
ORDERING INFORMATION
CS8405A-CS
CS8405A-CZ
CS8405A-CZZ, Lead Free
CS8405A-IS
CS8405A-IZ
CDB8415A
28-pin SOIC
-10 to
28-pin TSSOP -10 to
28-pin TSSOP -10 to
28-pin SOIC
-40 to
28-pin TSSOP -40 to
Evaluation Board
+70°C
+70°C
+70°C
+85°C
+85°C
I
VD+
VL+ DGND
RXP
C & U bit
Data
Buffer
AES3
S/PDIF
Encoder
TXP
Driver
TXN
ILRCK
ISCLK
SDIN
Serial
Audio
Input
Misc.
Control
RST
Control
Port &
Registers
Output
Clock
Generator
H/S
U TCBL SDA/
SCL/ AD1/ AD0/ AD2 INT
CDOUT CCLK CDIN CS
OMCK
©
Cirrus Logic, Inc.
www.cirrus.com
Copyright Cirrus Logic, Inc. 2004
(All Rights Reserved)
Aug ‘04
DS469F2
1
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