CS4298 Datasheet, PDF (1/52 Pages) Cirrus Logic – SoundFusion Audio/Modem Codec 97 (AMC 97)

CS4298
SoundFusion^® Audio/Modem Codec ’97(AMC’97)
FEATURES
s AC ‘97 2.0 compatible
s 20-bit stereo output and 18-bit stereo input codec
with fixed 48 kHz sampling rate
s 20-bit output and 18-bit input dual modem AFE
with fixed 48 kHz sampling rate
s Dedicated ADC for handset or speakerphone
s Four analog line-level stereo inputs for connec-
tion from LINE IN, CD, VIDEO, and AUX
s High quality pseudo-differential CD input
s Dual stereo line level output with independent 6-
bit volume control
s 10 General Purpose I/O pins for Modem DAA
controls
s IEC-958 Digital Output (S/PDIF)
s Meets or exceeds Microsoft's ^® PC 98 and PC 99
audio performance requirements
s CrystalClear™ 3D Stereo Enhancement
DESCRIPTION
The CS4298 is an AC ‘97 compatible Audio/Mo-
dem Codec designed for PC multimedia systems.
Using the industry leading CrystalClear™ delta-
sigma and mixed signal technology, the CS4298 is
ideal for PC 98-compliant desktop, notebook, and
entertainment PCs, where high-quality audio and
modem features are required.The CS4298 offers
four channels of D/A and A/D conversion along
with analog mixing and 3D processing. For multi-
channel audio systems, the CS4298 can provide
four audio channels. For combined audio/modem
systems, the CS4298 can provide a modem AFE,
voice codec, and stereo audio codec..
ORDERING INFORMATION
CS4298-KQ
64-pin TQFP
CS4298-JQ
64-pin TQFP
10x10x1.4mm
10x10x1.4mm
MIC1
MIC2
LINE
CD
VIDEO
AUX
SDATA_OUT
RESET#
SYNC
Mode Control
MRX+
MRX-
HRX+
HRX-
MAIN D/A
CONVERTERS
PCM_OUT
MIC SELECT
DAC
+2 0dB
2
/
2
/
2
/
2
/
VOL
VOL
VOL
VOL
VOL
VOL
VOL
2
/
PCM OUT
PATH
MUTE
MUTE
MUTE
MUTE
STEREO
INPUT
MIXER
Σ
MUTE
MUTE
MUTE
STEREO TO
MONO MIXER
Σ
3D
Σ
STEREO
OUTPUT
MIXER
MASTER VOLUME
VOL
OUTPUT
BUFFER
2
/
ALTERNATE VOLUME
VOL
OUTPUT
BUFFER
2
/
2
/
ADC
INPUT
MUX
MAIN ADC GAIN
VOL
MUTE
ADC
LINE_ OUT
ALT_LINE_OUT
3
/
(loopback) MTX+
(loopback) MTX-
Vref
(loopback) HTX+
(loopback) HTX-
Vref
VOL
VOL
VOL
VOL
AC-Link Interface
ADC
ADC
MRX-
DAC
MRX+
HRX+
DAC
HRX-
10
/
-+
Class AB
Dif out
+-
-+
Class AB
Dif out
+-
SDATA_IN
BIT_CLK
GPIO
MTX+
MTX-
HTX+
HTX-
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. 1999
(All Rights Reserved)
AUG ‘99
DS315PP2
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