CS8427
96 kHz Digital Audio Interface Transceiver
Features
General Description
The CS8427 is a stereo digital audio transceiver with
AES3 and serial digital audio inputs, AES3 and serial
digital audio outputs, and includes comprehensive con-
trol ability through a 4-wire microcontroller port. Channel
status and user data are assembled in block-sized buff-
ers, making read/modify/write cycles easy.
A low-jitter clock recovery mechanism yields a very clean
recovered clock from the incoming AES3 stream.
Target applications include A/V receivers, CD-R, DVD
receivers, multimedia speakers, digital mixing consoles,
effects processors, set-top boxes, and computer and au-
tomotive audio systems.
The CS8427 is available in 28-pin SOIC and TSSOP
packages in Commercial (-10°C to +70°C) and Automo-
tive (-40°C to +85°C) grades. The CDB8427 Customer
Demonstration Board is also available for device evalu-
ation and implementation suggestions. Please see
Complete EIAJ CP1201, IEC-60958, AES3,
S/PDIF-compatible Transceiver
+5.0 V Analog Supply (VA+)
+3.3 V or +5.0 V Digital Interface (VL+)
Flexible 3-wire Serial Digital I/O Ports
Adjustable Sample Rate up to 96 kHz
Low-jitter Clock Recovery
Pin and Microcontroller Read/Write Access to
Channel Status and User Data
Microcontroller and Standalone Modes
Differential Cable Driver and Receiver
On-chip Channel Status and User Data Buffer
Memories Permit Block Reads & Writes
OMCK System Clock Mode
Decodes Audio CD Q Sub-code
I
VA+ AGND FILT
RERR RMCK
VL+ DGND
ILRCK
ISCLK
SDIN
Serial
Audio
Input
Serial
Audio
Output
OLRCK
OSCLK
SDOUT
RXP
Receiver
RXN
Clock &
Data
Recovery
AES3
S/PDIF
Decoder
C & U bit
Data
Buffer
AES3
S/PDIF
Encoder
TXP
Driver
TXN
Misc.
Control
Control
Port &
Registers
Output
Clock
Generator
H/S
RST
EMPH U TCBL SDA/
SCL/ AD1/ AD0/ INT
CDOUT CCLK CDIN CS
OMCK
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Copyright
Cirrus Logic, Inc. 2010
(All Rights Reserved)
MAY ‘10
DS477F5
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