CS4297 Datasheet, PDF (1/46 Pages) Cirrus Logic – CrystalClear SoundFusion Audio Codec 97

CS4297
Product Data Sheet
FEATURES
n AC’97 1.03 Compatible
n Industry Leading Mixed Signal Technology
n 18-bit stereo full-duplex Codec with fixed 48 kHz
sampling rate
n Four analog line-level stereo inputs for connec-
tion from LINE IN, CD, VIDEO and AUX
n Two analog line-level mono inputs for speaker-
phone and internal PC Beeper
n Mono microphone input switchable from two
external sources
n High quality differential CD input
n Dual Stereo line level outputs
n Extensive power management support
n Meets or exceeds Microsoft’s^® PC’97 and PC’98
audio performance requirements.
ORDERING INFO
CS4297-KQ, 48-pin TQFP, 9x9x1 mm
CS4297-JQ, 48-pin TQFP, 9x9x1 mm
CrystalClear™
SoundFusion™ Audio
Codec ’97
DESCRIPTION
The CS4297 is a AC’97 1.03 compatible stereo au-
dio Codec designed for PC multimedia systems.
Using the industry leading CrystalClear delta-sig-
ma and mixed signal technology, the CS4297
paves the way for PC’97-compliant desktop, porta-
ble, and entertainment PCs, where high-quality
audio is required.
The CS4297, when coupled with a DC’97 PCI au-
dio accelerator such as the CS4610, implements a
cost-effective, superior quality, two-chip audio so-
lution. The CS4297 Audio Codec ’97 and CS4610
PCI Audio Accelerator are the first members of the
SoundFusion family of advanced PCI audio prod-
ucts for next generation multimedia PCs.
SYNC
BIT_CLK
SDATA_OUT
SDATA_IN
RESET#
AC-LINK AND AC’97
REGISTERS
PWR
MGT
AC-
LINK
AC’97
REGISTERS
PCM_DATA
GAIN / MUTE CONTROLS
MIXER / MUX SELECTS
PCM_DATA
ANALOG INPUT MUX
AND OUTPUT MIXER
ADC
18 bits
INPUT
MUX
OUTPUT
MIXER
Σ ^DAC
18 bits
LINE
CD
AUX
VIDEO
MIC1
MIC2
PHONE
PC_BEEP
LINE_OUT
ALT_LINE_OUT
MONO_OUT
DS242F5
Copyright © Cirrus Logic, Inc. 1999
(All Rights Reserved)
JUN ‘99