Cirrus Logic CS4228A - Manual

1
Copyright  Cirrus Logic, Inc. 2003
(All Rights Reserved)
www.cirrus.com
CS4228A
24-Bit, 96 kHz Surround Sound Codec
Features
! Six 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
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 28-pin SSOP
CDB4228A Evaluation Board
I
SCL/CCLK SDA/CDIN VD
FL LRCK
SCLK
SDIN1
SDOUT
SE
RIAL
AUD
IO
CONTROL PORT
DIGIT
AL
F
IL
T
E
R
S
ANAL
OG
L
O
W
P
AS
S
AND
OUT
P
UT
ST
AGE
VA
FR
AINL+
AINL-
SDIN2
MCLK DGND
SL
SR
AINR+
AINR-
LEFT ADC
SDIN3
MUTEC AD0/CS RST
FILT
CENTER
SUB
DIGIT
AL
F
IL
T
E
R
S
DAT
A
INT
E
R
F
ACE
VL
RIGHT ADC
AGND
WIT
H
DE-
E
M
P
HAS
IS
∆Σ DAC #1
CLOCK MANAGER
MUTE CONTROL
∆Σ DAC #2
∆Σ DAC #3
∆Σ DAC #4
∆Σ DAC #5
∆Σ DAC #6 DIGITAL VOLUME
DIGITAL VOLUME
DIGITAL VOLUME
DIGITAL VOLUME
DIGITAL VOLUME
DIGITAL VOLUME
MAR ‘03
DS511F1