CS42526
114 dB, 192 kHz 6-Ch Codec with S/PDIF Receiver
Features
!
Six 24-bit D/A, two 24-bit A/D Converters
!
114 dB DAC / 114 dB ADC Dynamic Range
!
-100 dB THD+N
!
System Sampling Rates up to 192 kHz
!
S/PDIF Receiver Compatible with EIAJ
General Description
The CS42526 codec provides two analog-to-digital and
six digital-to-analog delta-sigma converters, as well as
an integrated S/PDIF receiver.
The CS42526 integrated S/PDIF receiver supports up
to eight inputs, clock recovery circuitry and format auto-
detection. The internal stereo ADC is capable of inde-
pendent channel gain control for single-ended or
differential analog inputs. All six channels of DAC pro-
vide 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 con-
trols or ADC overflow indicators.
The CS42526 is ideal for audio systems requiring wide
dynamic range, negligible distortion and low noise, such
as A/V receivers, DVD receivers, digital speaker and
automotive audio systems.
The CS42526 is available in a 64-pin LQFP package in
both Commercial (-10° to 70° C) and Automotive
(-40° to 85° C) grades. The CDB42528 Customer Dem-
onstration board is also available for device evaluation.
Refer to
DGND DGND VD
VD
INT
C&U Bit
Data Buffer
Format
Detector
Control
Port
RST
AD0/CS
AD1/CDIN
SDA/CDOUT
SCL/CCLK
VLC
OMCK
Internal MCLK
Ref
DEM
Mult/Div
Serial
Audio
Interface
Port
RMCK
SAI_LRCK
SAI_SCLK
SAI_SDOUT
VLS
ADC
Serial
Data
ADCIN1
ADCIN2
CX_SDOUT
CX_LRCK
CX_SCLK
DAC#2
Volume Control
Analog Filter
Digital Filter
DAC#3
DAC#4
DAC#5
DAC#6
CODEC
Serial
Port
CX_SDIN1
CX_SDIN2
CX_SDIN3
CP1201 and IEC-60958
!
Recovered S/PDIF Clock or System Clock
Selection
!
8:2 S/PDIF Input MUX
!
ADC High-Pass Filter for DC Offset Calibration
!
Expandable ADC Channels and One-Line
Mode Support
!
Digital Output Volume Control with Soft Ramp
!
Digital +/-15 dB Input Gain Adjust for ADC
!
Differential Analog Architecture
!
Supports Logic Levels between 1.8 V and 5 V
TXP
RXP0
RXP1/GPO1
RXP2/GPO2
RXP3/GPO3
RXP4/GPO4
RXP5/GPO5
RXP6/GPO6
RXP7/GPO7
VARX
AGND LPFLT
Rx
Clock/Data
Recovery
S/PDIF
Decoder
GPO
MUTEC
FILT+
VQ
REFGND
VA
AGND
AINL+
AINL-
AINR+
AINR-
AOUTA1+
AOUTA1-
AOUTB1+
AOUTB1-
AOUTA2+
AOUTA2-
AOUTB2+
AOUTB2-
AOUTA3+
AOUTA3-
AOUTB3+
AOUTB3-
MUTE
ADC#1
ADC#2
Digital Filter
Gain & Clip
Gain & Clip
Digital Filter
DAC#1
Copyright
©
Cirrus Logic, Inc. 2005
(All Rights Reserved)
NOVEMBER '05
DS585F1
CIRRUS [ CIRRUS LOGIC ]
