CS4235 Datasheet, PDF (1/94 Pages) Cirrus Logic – CrystalClear Low Cost ISA Audio System

CS4235
Advanced Product Databook
FEATURES
s Compatible with Sound Blaster™, Sound Blaster
Pro™, and Windows Sound System™
s Advanced MPC3-Compliant Input and Output
Mixer
s Enhanced Stereo Full Duplex Operation
s Dual Type-F DMA Support
s Integrated CrystalClear™ 3D Stereo
Enhancement
s Industry Leading Delta-Sigma Data Converters
(86 dB FS A)
s Internal Default PnP Resources
s CS9236 Wavetable Interface
s CS4610 Audio Accelerator Interface
s CS4236B/CS4237B/CS4238B Register
Compatible
CrystalClear™
Low Cost ISA Audio System
DESCRIPTION
The CS4235 is a single chip multimedia audio system
that is pin-compatible to the CS423xB for many de-
signs. The product includes an integrated FM
synthesizer and a Plug-and-Play interface. In addition,
the CS4235 includes hardware master volume control
pins as well as extensive power management and 3D
sound technology. The CS4235 is compatible with the
Microsoft^® Windows Sound System standard and will
run software written to the Sound Blaster and Sound
Blaster Pro interfaces. The CS4235 is fully compliant
with Microsoft’s PC’97 and PC’98 audio requirements.
ORDERING INFO
CS4235-JQ 100 pin TQFP, 14x14x1.4mm
CS4235-KQ 100 pin TQFP, 14x14x1.4mm
XTALI XTALO
OSCILLATOR
VREF
VREF
SD<7:0>
SA<11:0>
IOR
IOW
AEN
IOCHRDY
IRQ<A:G>
DRQ<A:C>
DACK<A:C>
ISA
BUS
INTERFACE
PLUG
AND
PLAY
CODEC
REG
I/F
Config
IO
IRQ
DMA
Decode
Logic
FIFO
FIFO
FM
Synthesizer
Stereo
ADC1
INPUT MIXER
Σ
Stereo
DAC1
Stereo
DAC2
OUTPUT MIXER
Σ
3D
Enhancement
GAIN
GAIN
GAIN
ATTN
ATTN
SA<12:15)
(CDROM)
CD-ROM or
Upper Address Bits
ANALOG
JOYSTICK
LOGIC
CS4610
INTERFACE
CS9236
WAVETABLE
INTERFACE
BRESET JOYSTICK SERIAL PORT SERIAL PORT
MPU-401
UART
with
FIFOS
WSS
SBPRO
Registers
EEPROM
Interface
Hardware
Volume Control
MIDI
SCL SDA
L/RAUX1
L/RAUX2
CMAUX2
MIC
MIN
L/ROUT
UP
DOWN
MUTE
NOV ‘97
Copyright © Cirrus Logic, Inc. 1997
(All Rights Reserved)
DS252PP2