CS4226
Surround Sound Codec
Features
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 -10° to +70° C 44-pin TQFP
CS4226-BQ -40° to +85° C 44-pin TQFP
CDB4226
Evaluation Board
l
Stereo 20-bit A/D Converters
l
Six 20-bit D/A Converters
l
S/PDIF Receiver
l
108 dB DAC Signal-to-Noise Ratio (EIAJ)
l
Mono 20-bit A/D Converter
l
Programmable Input Gain & Output
—
AC-3 & MPEG Auto-detect Capability
Attenuation
l
On-chip Anti-aliasing and Output Smoothing
Filters
l
De-emphasis for 32 kHz, 44.1 kHz, 48 kHz
I
SCL/CCLK SDA/CDOUT AD1/CDIN AD0/CS I
2
C/SPI
PDN
Control Port
DAC#1
LRCK
Digital Filters
SCLK
SDIN1
SDIN2
SDIN3
DAC#2
Serial Audio Data Interface
DAC#3
DAC#4
DAC#5
DAC#6
Mono
ADC
Left
ADC
Right
ADC
Digital Filters
Volume
Control
VD+ VA+
Voltage
Reference
CMOUT
AOUT1
AOUT2
Analog Low Pass and
Output Stage
AOUT3
AOUT4
AOUT5
AOUT6
Volume
Control
Volume
Control
Volume
Control
Volume
Control
Volume
Control
SDOUT1
SDOUT2
OVL/ERR
DEM
AINAUX
AIN1L
MUX
AIN1R
AIN2L/FREQ0
AIN2R/FREQ1
DEM
AIN3L/AUTODATA
AIN3R/AUDIO
Clock Osc/ PLL
S/PDIF RX/Auxiliary Input
AGND1
Divider
AGND2
CLKOUT XTI XTO FILT HOLD/RUBIT
LRCKAUX/RX3
RX1 DGND1 DGND2
DATAUX/RX4
SCLKAUX/RX2
Input
Gain
Input MUX
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
Copyright
©
Cirrus Logic, Inc. 1998
(All Rights Reserved)
SEP ‘98
DS188F1
1
CIRRUS [ CIRRUS LOGIC ]
