
1
Copyright
Cirrus Logic, Inc. 1998
(All Rights Reserved)
Cirrus Logic, Inc.
Crystal Semiconductor Products Division
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.crystal.com
CS4226
Surround Sound Codec
Features
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Stereo 20-bit A/D Converters
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Six 20-bit D/A Converters
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S/PDIF Receiver
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AC-3 & MPEG Auto-detect Capability
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108 dB DAC Signal-to-Noise Ratio (EIAJ)
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Mono 20-bit A/D Converter
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Programmable Input Gain & Output
Attenuation
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On-chip Anti-aliasing and Output Smoothing
Filters
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De-emphasis for 32 kHz, 44.1 kHz, 48 kHz
Description
The CS4226 is a single-chip codec providing stereo an-
alog-to-digital and six digital-to-analog converters using
delta-sigma conversion techniques. This +5 V device
also contains volume control independently selectable
for each of the six D/A channels. An S/PDIF receiver is
included as a digital input channel. Applications include
Dolby Pro-logic, THX, DTS and Dolby Digital AC-3 home
theater systems, DSP based car audio systems, and
other multi-channel applications.
The CS4226 is packaged in a 44-pin plastic TQFP.
ORDERING INFORMATION
CS4226-KQ
CS4226-BQ
CDB4226
-10° to +70° C 44-pin TQFP
-40° to +85° C 44-pin TQFP
Evaluation Board
I
SCL/CCLK
DEM
SDA/CDOUT
VD+
AOUT1
LRCK
SCLK
SDIN1
SDIN2
SDIN3
SDOUT1
SDOUT2
OVL/ERR
S
Control Port
D
DAC#1
Right
ADC
Left
ADC
Volume
Control
A
O
VA+
AOUT2
AIN1L
AIN1R
AIN2L/FREQ0
AIN2R/FREQ1
AIN3L/AUTODATA
AIN3R/AUDIO
AGND1
DAC#4
DAC#2
DAC#3
DEM
MUX
Clock Osc/
Divider
CLKOUT XTI XTO
PLL
FILT
Volume
Control
Volume
Control
Volume
Control
LRCKAUX/RX3
SCLKAUX/RX2
DGND1 DGND2
S/PDIF RX/Auxiliary Input
I
G
AOUT3
AOUT4
Voltage
Reference
I
AGND2
PDN
AD1/CDIN AD0/CS I
2
C/SPI
CMOUT
DAC#6
DAC#5
Volume
Control
Volume
Control
AOUT5
AOUT6
Mono
ADC
AINAUX
RX1
DATAUX/RX4
HOLD/RUBIT
D
SEP ‘98
DS188F1