CS4228A
24-Bit, 96 kHz Surround Sound Codec
Features
!
Six
Description
The CS4228A codec provides two analog-to-digital and
six digital-to-analog Delta-Sigma converters, along with
volume controls, in a compact 28-pin SSOP device.
Combined with an IEC958 (SPDIF) receiver (like the
CS8414) and surround sound decoder (such as one of
the CS492x or CS493xx families), it is ideal for use in
DVD player, A/V receiver and car audio systems sup-
porting multiple standards such as Dolby Digital AC-3
,
AAC
, DTS
, Dolby ProLogic
, THX
, and other
multi-channel formats.
A flexible serial audio interface allows operation in Left
Justified, Right Justified, I
2
S, or One Line Data modes.
ORDERING INFORMATION
CS4228A-KS
-10° to +70°C
CDB4228A
28-pin SSOP
Evaluation Board
24-bit D/A converters
-
100 dB dynamic range
-
-90 dB THD+N
!
Two
24-bit A/D converters
-
97 dB dynamic range
-
-88 dB THD+N
!
Sample
rates up to 100 kHz
!
Pop-free digital output volume controls
-
90.5 dB range, 0.5 dB resolution (182 levels)
-
Variable smooth ramp rate, 0.125 dB steps
!
Mute
control pin for off-chip muting circuits
!
On-chip anti-alias and output filters
!
De-emphasis filters for 32, 44.1 and 48 kHz
I
SCL/CCLK
SDA/CDIN
AD0/CS
MUTEC
RST
VD
VL
VA
CONTROL PORT
MUTE CONTROL
FILT
ANALOG LOW PASS AND
OUTPUT STAGE
DIGITAL FILTERS
WITH DE-EMPHASIS
LRCK
SCLK
SDIN1
SDIN2
SDIN3
SERIAL AUDIO
DATA INTERFACE
DIGITAL VOLUME
DIGITAL VOLUME
DIGITAL VOLUME
DIGITAL VOLUME
DIGITAL VOLUME
DIGITAL VOLUME
∆Σ
DAC #1
∆Σ
DAC #2
∆Σ
DAC #3
∆Σ
DAC #4
∆Σ
DAC #5
∆Σ
DAC #6
FL
FR
SL
SR
CENTER
SUB
SDOUT
DIGITAL FILTERS
LEFT ADC
RIGHT ADC
AINL+
AINL-
AINR+
AINR-
CLOCK MANAGER
MCLK
DGND
AGND
www.cirrus.com
Copyright
Cirrus Logic, Inc. 2003
(All Rights Reserved)
MAR ‘03
DS511F1
1
CIRRUS [ CIRRUS LOGIC ]
