CS4227
Six Channel, 20-Bit Codec
Features
l
Stereo
Description
The CS4227 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 controls that are independently se-
lectable for each of the six D/A channels. Applications
include Dolby
®
Pro-logic™, THX
®
, and Dolby Digital AC-
3™ home theater systems, DSP based car audio sys-
tems, and other multi-channel applications.
ORDERING INFORMATION
CS4227-KQ -10° to +70° C 44-pin TQFP
CS4227-BQ -40° to +85° C 44-pin TQFP
CDB4227
Evaluation Board
20-bit A/D Converters
l
Six 20-bit D/A Converters
l
108 dB DAC Signal-to-Noise Ratio (EIAJ)
l
Mono 20-bit A/D Converter
l
Programmable Input Gain & Output
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 SPI/I
2
C
VD+ VA+
Voltage
Reference
CMOUT
AOUT1
AOUT2
Analog Low Pass and
Output Stage
AOUT3
AOUT4
AOUT5
AOUT6
AINAUX
AIN1L
AIN1R
AIN2L
AIN2R
AIN3L
AIN3R
AGND1
AGND2
DGND2
PDN
Control Port
DAC#1
Volume
Control
Volume
Control
Volume
Control
Volume
Control
Volume
Control
Volume
Control
LRCK
SCLK
Serial Audio Data Interface
Digital Filters
SDIN1
SDIN2
SDIN3
DAC#2
DAC#3
DAC#4
DAC#5
DAC#6
Mono
ADC
Left
ADC
Right
ADC
Digital Filters
SDOUT1
SDOUT2
OVL
MUX
Input
Gain
DEM
DEM
Clock Osc/
Divider
CLKOUT XTI
XTO
Auxiliary Input
HOLD
DATAUX
LRCKAUX
SCLKAUX
DGND1
Preliminary Product Information
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright
©
Cirrus Logic, Inc. 1999
(All Rights Reserved)
Input MUX
SEP ‘99
DS281PP2
1
CIRRUS [ CIRRUS LOGIC ]
