CS4294 Datasheet, PDF (1/42 Pages) Cirrus Logic – SoundFusion Audio/Docking Codec 97 (AMC 97)

CS4294
SoundFusion^® Audio/Docking Codec ’97 (AMC’97)
FEATURES
n AC ‘97 2.0 compatible
n 20-bit quad output and 18-bit dual stereo input
codec with fixed 48 kHz sampling rate
n Dedicated ADC for enhanced digital docking
n Three analog line-level stereo inputs for connec-
tion from LINE IN, CD, and AUX
n High quality pseudo-differential CD input
n Dual stereo line level output with independent 6-
bit volume control
n 6 General Purpose I/O pins
n Meets or exceeds Microsoft's ^® PC 98 and PC 99
audio performance requirements
n CrystalClear™ Stereo Enhancement
DESCRIPTION
The CS4294 is an AC ‘97 compatible Audio Codec
designed for PC multimedia systems. Using the in-
dustry leading CrystalClear™ delta-sigma and
mixed signal technology, the CS4294 is ideal for
PC 98-compliant desktop, notebook, and enter-
tainment PCs, where high-quality audio features
are required. The CS4294 offers four channels of
D/A and A/D conversion along with analog mixing
and stereo enhancement processing. For multi-
channel audio systems, the CS4294 can provide
four audio channels. The CS4294 provides an en-
hanced digital docking mode for portable
applications by providing a dedicated ADC capture
path from the analog input mixer.
ORDERING INFORMATION
CS4294-KQ
48-pin TQFP
CS4294-JQ
48-pin TQFP
9x9x1.4mm
9x9x1.4mm
MIC1
LINE
CD
AUX
SDATA_OUT
RESET#
SYNC
Mode Control
MAIN D/A
CONVERTERS
PCM_OUT
DAC
VOL
2
/
PCM OUT
PATH
MUTE
+20dB
VOL
MUTE
2
/
VOL
MUTE
2
/
VOL
MUTE
STEREO
INPUT
MIXER
Σ
2
/
VOL
MUTE
STEREO TO
MONO MIXER
Σ
3D
Σ
STEREO
OUTPUT
MIXER
MASTER VOLUME
VOL
OUTPUT
BUFFER
2
/
ALTERNATE VOLUME
VOL
OUTPUT
BUFFER
2
/
2
/
LINE_OUT
ALT_LINE_OUT
ADC
INPUT
MUX
MAIN ADC GAIN
VOL
MUTE
ADC
AC-Link Interface
3
/
SDATA_IN
BIT_CLK
6
/
GPIO
2
/
ADC
DAC
Preliminary Product Information
P.O. Box 17847, Austin, Texas 78760
[phone] FAX: [phone]
http://www.cirrus.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright  Cirrus Logic, Inc. 2000
(All Rights Reserved)
FEB ‘00
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