CS4231A Datasheet, PDF (1/76 Pages) List of Unclassifed Manufacturers – PARALLEL INTERFACE MULTIMEDIA AUDIO CODEC

Semiconductor Corporation
CS4231A
Parallel Interface, Multimedia Audio Codec
Features
General Description
• Windows Sound SystemTM
Compatible Codec
• ^{ADPCM Compression/Decompression}
• ^{Extensive Software Support}
• ^{MPC Level 2 Compatible Mixer}
• ^{Dual DMA Registers support Full}
Duplex Operation
• ^{On-Chip FIFOs for higher performance}
• ^{Selectable Serial Audio Data Port}
• ^{Pin Compatible with CS4231/CS4248}
The CS4231A includes stereo 16-bit audio converters
and complete on-chip filtering for record and playback
of 16-bit audio data. In addition, analog mixing and
programmable gain and attenuation are included to
provide a complete audio subsystem. A selectable se-
rial port can pass audio data to and from DSPs or
ASICs. Crystal-developed high-performance software
drivers for various operating systems are available that
support all the CS4231A features including full duplex
transfers. The CS4231A is a pin compatible upgrade to
the CS4231 and CS4248.
ORDERING INFORMATION:
CS4231A-KL 0 to 70°C
CS4231A-KQ 0 to 70°C
68-pin PLCC
100-pin TQFP
VD1 VD2 VD3 VD4 SDOUT SDIN SCLK FSYNC VREF VREFI LFILT RFILT
VA1 VA2
8
D<7:0>
A<1:0> ₂
IRQ
DBDIR
DBEN
CS
RD
WR
PDRQ
Parallel
Bus
Interface
Audio Data Serial Port
I16
VREF
16-bit
A/D
FIFO
16
Samples
Linear
µ-law
A-law
ADPCM
I8 or I28
Optional
Dither
I10
16-bit
A/D
Loopback
Digital I13
Attenuation
Gain
I0
Gain
I1
I0
Mux
I1
20dB Gain
I0
I1
Mix I3
Gain I2
Mix I19
Gain I18
CDRQ
PDAK
CDAK
XCTL1
XCTL0
PDWN
FIFO
16
I 16
Samples
Linear
µ-law
A-law
ADPCM
I8
16 Bit Timer I20,I21
16-bit
D/A
I6
Mute
16-bit
D/A
Mute
I7
Oscillators I8
Mix
Gain ^I26
Mute
I26
Mix I4
Gain I5
LMIC
RMIC
LLINE
RLINE
LAUX1
RAUX1
LOUT
MOUT
ROUT
LAUX2
RAUX2
DGND1 DGND2 DGND3/4/7/8 TEST
XTAL1I XTAL1O XTAL2I XTAL2O
MIN
AGND1 AGND2
Preliminary Product Information ^{This document contains information for a new product. Crystal}
Semiconductor reserves the right to modify this product without notice.
Crystal Semiconductor Corporation
P.O. Box 17847, Austin, TX 78760
[phone] Fax: [phone]
Copyright © Crystal Semiconductor Corporation 1994
(All Rights Reserved)
SEPT ’94
DS139PP2
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