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Cirrus Logic CS8427 User Manual

Features, General description

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Copyright

Cirrus Logic, Inc. 2010

(All Rights Reserved)

www.cirrus.com

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

Serial
Audio

Input

Clock &
Data

Recovery

Misc.

Control

AES3
S/PDIF

Encoder

Serial
Audio

Output

Receiver

AES3
S/PDIF

Decoder

C & U bit
Data

Buffer

Control

Port &

Registers

Output
Clock

Generator

RXN

RXP

ILRCK

ISCLK

SDIN

OLRCK
OSCLK
SDOUT

TXP

TXN

RST

OMCK

EMPH U TCBL SDA/

CDOUT

SCL/

CCLK

AD1/

CDIN

AD0/

CS

INT

VA+ AGND FILT

RERR

VL+ DGND

H/S

RMCK

Driver

MAY ‘10

DS477F5

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