CS8427_09 Datasheet, PDF (1/60 Pages) Cirrus Logic – 96 kHz Digital Audio Interface Transceiver

CS8427
96 kHz Digital Audio Interface Transceiver
Features
 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
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
“Ordering Information” on page 49 for complete details.
I
VA+ AGND FILT RERR RMCK
VL+ DGND
ILRCK
ISCLK
SDIN
Serial
Audio
Input
Serial
Audio
Output
OLRCK
OSCLK
SDOUT
RXP
RXN
Receiver
Clock & AES3
Data
S/PDIF
Recovery Decoder
C & U bit
Data
Buffer
AES3
S/PDIF
Encoder
Driver
TXP
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
www.cirrus.com
Copyright  Cirrus Logic, Inc. 2009
(All Rights Reserved)
OCT ‘09
DS477F4
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