Harman Kardon AVR 254, Service Manual

Page: 167 / 189

Preliminary Product Information
Cirrus Logic, Inc.
http://www.cirrus.com
CS42528
114 dB, 192 kHz 8-Ch Codec with S/PDIF Receiver
Features
z
Eight 24-bit D/A, two 24-bit A/D Converters
z
114 dB DAC / 114 dB ADC Dynamic Range
z
-100 dB THD+N
z
System Sampling Rates up to 192 kHz
z
S/PDIF Receiver Compatible with EIAJ CP1201
and IEC-60958
z
Recovered S/PDIF Clock or System Clock
Selection
z
8:2 S/PDIF Input MUX
z
ADC High-pass Filter for DC Offset Calibration
z
Expandable ADC Channels and One-line Mode
Support
z
Digital Output Volume Control with Soft Ramp
z
D/-15dB Input Gain Adjust for ADC
z
Differential Analog Architecture
z
Supports logic levels between 5 V and 1.8 V.
General Description
The CS42528 codec provides two analog-to-digital and eight
digital-to-analog delta-sigma converters, as well as an integrat-
ed S/PDIF receiver, in a 64-pin LQFP package.
The CS42528 integrated S/PDIF receiver supports up to eight
inputs, clock recovery circuitry and format auto-detection. The
internal stereo ADC is capable of independent channel gain
control for single-ended or differential analog inputs. All eight
channels of DAC provide digital volume control and differential
analog outputs. The general purpose outputs may be driven
high or low, or mapped to a variety of DAC mute controls or
ADC overflow indicators.
The CS42528 is ideal for audio systems requiring wide dynam-
ic range, negligible distortion and low noise, such as A/V
receivers, DVD receivers, digital speaker and automotive audio
systems.
ORDERING INFORMATION
CS42528-CQZ
-10° to 70° C 64-pin LQFP Lead Free
CS42528-DQZ
-40° to 85° C 64-pin LQFP Lead Free
CDB42528
Evaluation Board
RST
RXP0
RXP1/G PO 1
AD0/CS
SCL/CCLK
SDA/C DO UT
AD 1/C DIN
VLC
AO UT A1+
AO UT A1-
AO U TB1+
AO U TA3+
AO UT A3-
AO UT A2-
AO U TB2-
AO U TA2+
AO UT B2+
AO UTB1-
AO U TB3+
AO UTB3-
AO UT A4+
AO U TA4-
AO UT B4+
AO UT B4-
AINL+
AINL-
AIN R+
AINR -
F ILT+
REFG ND
VQ Ref
ADC#1
ADC #2
Digital Filter
Digital Filter
G ain & C lip
G ain & Clip
CX_SDO UT
AD CIN1
ADC IN2
CX_SCLK
CX_LRC K
CX_SDIN4
CX_SD IN 3
CX_SDIN2
CX_SDIN1
VLS
SAI_LRC K
SAI_SCLK
SAI_SDO UT
D G ND VD
O M CK
RM CK
LPF LT
T XP
IN T
Rx
Clock/D ata
Recovery
S/PDIF
Decoder
DEM
Serial
Audio
Interface
Port
C&U Bit
Data Buffer
Control
Port
DAC #1
D AC #2
DAC#3
D AC #4
DAC#5
DAC#6
DAC#7
DAC #8
D
ig
it
a
l
F
il
te
r
V
o
lu
m
e
C
o
n
tr
o
l
DG N D
RXP2/G PO 2
RXP3/G PO 3
RXP4/G PO 4
RXP5/G PO 5
RXP6/G PO 6
RXP7/G PO 7
VD
M UTEC
G PO
M UTE
A
n
a
lo
g
F
il
te
r
VARX AG ND
ADC
Serial
Data
AG ND
VA
Internal M CLK
CO D EC
Serial
Port
M ult/Div
F orm at
Detector
167
AVR254
harman/kardon