Cirrus Logic CRD4202-1 - Manual

Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
1
Copyright  Cirrus Logic, Inc. 2002
(All Rights Reserved)
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
CrystalClear™ AC '97 Six Channel CNR Audio Reference Design
Features
! Six Channel Analog Audio Outputs
! Headphone Sense using GPIO
! CS4202 codec and two CS4334 DACs
! 20-bit D to A conversion (DAC)
! 18-bit A to D conversion (ADC)
! S/PDIF (IEC-958) optical digital output
! Complete suite of Analog I/O connections:
– Line, Mic, CD, Video, Modem, and Aux Inputs
– Modem, Headphone, Line Front, Line Rear
and Line Center/Sub-Woofer Outputs
! 2-layer low cost PC board
! Meets Intel ® AC ' 97 revision 2.2
! Exceeds Microsoft’s
®
PC 2001 audio
performance requirements.
Description
The CRD4202-1 reference design features six channel
analog audio outputs, an optical S/PDIF digital output,
and Communication and Networking Riser (CNR) inter-
face. This design uses the CS4202 audio codec which
has several advanced features including a built-in head-
phone amplifier, simultaneous six channel analog and
S/PDIF optical digital output, GPIO for headphone de-
tection, and up to 30 dB of internal microphone boost.
The CRD4202-1 reference design is available by order-
ing the CMK4202-1 manufacturing kit. This kit includes
the CRD4202-1 board, a full set of schematic design
files (OrCAD
® format), PCB job files (PADS ® ASCII),
PCB artwork files, and bill of materials. This reference
design offers significant cost savings over competing
solutions and can be easily modified to meet your spe-
cific design goals.
ORDERING INFO
CMK4202-1
(Manufacturing Kit)
AUX IN VIDEO IN CD IN INT MODEM
MIC
IN
Cirrus Logic
CRD4202-1
CS4202
S/PDIF
OUT
CNT/LFE
OUT
SURR
OUT
HEADPH
OUT
LINE
OUT
LINE
IN
Microphone Input
Line Input
Line Output
Headphone Output
Rear Channel Output
Center / Sub-Woofer Output
S/PDIF Digital Optical Output
JAN ‘02
DS549RD1A1
CRD4202-1