CS4237B Datasheet, PDF (1/114 Pages) Cirrus Logic – CrystalClear Advanced Audio System with 3D Sound

CS4237B
CrystalClear™ Advanced Audio System with 3D Sound
• ^{Integrated SRS®}
3D Sound Technology
•
Compatible with Sound Blaster^TM, Sound Blaster
Pro^TM, and Windows Sound System^TM
• ^{Advanced MPC3-Compliant Input and Output Mixer}
• ^{Enhanced Stereo Full Duplex Operation}
• ^{Dual Type-F DMA Support}
• ^{Industry Leading Delta-Sigma Data Converters}
• ^{Fully Plug-and-Play ISA Compatible}
• ^{3.3 V or 5 V ISA Bus Operation}
• ^{Programmable Power Management}
• ^{Hardware Master Volume Control}
• ^{Enhanced Digital Gameport}
• ^{CS9236 Wavetable Digital Audio Interface}
• ^{MPU-401 MIDI Interface}
• ^{Consumer IEC-958 Digital Output (S/PDIF)}
• ^{CS4236/CS4232/CS4231 Register Compatible}
General Description
The CS4237B is a single chip multimedia audio system
that provides compatibility with the Microsoft Windows
Sound System standard and will run software written to
the Sound Blaster and Sound Blaster Pro interfaces.
The CS4237B is fully compliant with Microsoft’s PC’ 97
and WHQL audio requirements. The product includes
an internal FM synthesizer and Plug-and-Play external
interfaces for Wavetable, CD-ROM, and modem de-
vices. In addition, the CS4237B includes hardware
master volume control pins as well as extensive power
management and SRS 3D sound technology.
ORDERING INFORMATION:
CS4237B-JQ
100 pin TQFP, 14x14x1.4mm
CS4237B-KQ
100 pin TQFP, 14x14x1.4mm
XTALI XTALO VREF REFFLT
L/RFILT
OSCILLATOR
VREF
SD<7:0>
SA<11:0>
IOR
IOW
AEN
IOCHRDY
IRQ<A:F>
DRQ<A:C>
DACK<A:C>
ISA
BUS
INTERFACE
LINEAR
µ-LAW
A-LAW
ADPCM
PLUG
AND
PLAY
CODEC
REG
I/F
SERIAL
SHIFT
Config
IO
IRQ
DMA
Decode
Logic
FM
Synthesizer
LINEAR
µ-LAW
A-LAW
ADPCM
Loopback
Monitor
Attenuation
DIGITAL
MIXER
Σ
INPUT MIXER
GAIN
Σ
OUTPUT MIXER
Σ
GAIN
GAIN
L/RLINE
GAIN
GAIN
GAIN
L/RAUX1
L/RAUX2
CMAUX2
L/RMIC
GAIN
ATTN.
Σ
MIN
MOUT
L/ROUT
SA<12:15>
(CDROM)
(Modem)
CD-ROM, Modem, or
Upper Address Bits
DIGITAL/
ANALOG
JOYSTICK
LOGIC
CS9236
SERIAL
PORT
DSP
SERIAL
PORT
S/PDIF
MPU-401
UART
with
FIFOS
Synth. Interface
or Hardware
Volume Control
WSS
SBPRO
Registers
Peripherals
&
EEPROM
Interface
XIOW
XIOR
XD<7:0>
XA<2:0>
JOYSTICK ^{WAVETABLE DSP SERIAL}
SERIAL PORT
PORT
MIDI
SCS/ SINT/ MUTE
UP DOWN
BRESET
Advanced Product Information
Cirrus Logic, Inc.
P.O. Box 17847, Austin, TX 78760
[phone] Fax: [phone]
http://www.cirrus.com
This document contains information for a new product. Cirrus
Logic, Inc. reserves the right to modify this product without notice.
Copyright © Cirrus Logic, Inc. 1997
(All Rights Reserved)
SEP ’97
DS213PP4
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