Cirrus Logic CS4297A - 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. 2006
(All Rights Reserved)
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
MAR ‘06
DS318PP5
CS4297A
Features
l AC ’97 2.1 Compatible
l Industry Leading Mixed Signal Technology
l 20-bit Stereo Digital-to-Analog Converters
l 18-bit Stereo Analog-to-Digital Converters
l Four Analog Line-level Stereo Inputs for
LINE_IN, CD, VIDEO, and AUX
l Two Analog Line-level Mono Inputs for
Modem and Internal PC Beep
l Dual Stereo Line-level Outputs for
LINE_OUT and ALT_LINE_OUT
l Dual Microphone Inputs
l High Quality Pseudo-Differential CD Input
l Extensive Power Management Support
l Meets or Exceeds the Microsoft

PC 99
Audio Performance Requirements
l S/PDIF Digital Audio Output
l CrystalClear

3D Stereo Enhancement
Description
The CS4297A is an AC ’97 2.1 compatible stereo audio
codec designed for PC multimedia systems. Using the
industry leading CrystalClear
 delta-sigma and mixed
signal technology, the CS4297A enables the design of
PC 99-compliant desktop, portable, and entertainment
PCs.
Coupling the CS4297A with a PCI audio accelerator or
core logic supporting the AC ’97 interface, implements a
cost effective, superior quality, audio solution. The
CS4297A surpasses PC 99 and AC ’97 2.1 audio quality
standards.
ORDERING INFO
CS4297A-KQZ lead-free 48-pin TQFP 9x9x1.4 mm
CS4297A-JQZ lead-free 48-pin TQFP 9x9x1.4 mm
AC’97
REGISTERS
LINE
CD
AUX
VIDEO
MIC1
MIC2
PHONE
PC_BEEP
LINE_OUT
ALT_LINE_OUT
MONO_OUT
ANALOG INPUT MUX
AND OUTPUT MIXER
AC-LINK AND AC’97
REGISTERS
GAIN / MUTE CONTROLS
INPUT
MUX
Σ
OUTPUT
MIXER
MIXER / MUX SELECTS
AC-
LINK
PWR
MGT
SYNC
BIT_CLK
SDATA_OUT
SDATA_IN
RESET#
PCM_DATA
DAC
20 bits
ADC
18 bits
S/PDIF
PCM_DATA
CrystalClear

SoundFusion ™ Audio Codec ’97
Copyright © Cirrus Logic, Inc. 2006
(All Rights Reserved)
Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
http://www.cirrus.com
CrystalClear
®
SoundFusion™ Audio Codec ‘97
CS4297A
March '06
DS318PP6
Copyright © Cirrus Logic, Inc. 2006
(All Rights Reserved)
Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
http://www.cirrus.com
CrystalClear
®
SoundFusion™ Audio Codec ‘97
CS4297A
March '06
DS318PP6