CS42426
114 dB, 192 kHz 6-Ch Codec with PLL
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
!
Integrated Low-Jitter PLL for Increased System
General Description
The CS42426 codec provides two analog-to-digital and
six digital-to-analog delta-sigma converters, as well as
an integrated PLL.
The CS42426 integrated PLL provides a low-jitter sys-
tem clock. The internal stereo ADC is capable of
independent 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 CS42426 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 CS42426 is available in a 64-pin LQFP package in
both Commercial (-10° to +70° C) and Automotive
(-40° to +85° C) grades. The CDB42428 Customer
Demonstration board is also available for device evalu-
ation. Refer to
Jitter Tolerance
!
PLL Clock or System Clock Selection
!
7 Configurable General-Purpose Outputs
!
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
VA AGND
GPO1
GPO2
GPO3
GPO4
GPO5
GPO6
GPO7
MUTEC
REFGND VQ FILT+
OMCK
RMCK
LPFLT
VLC
DGND VD
INT
Mult/Div
GPO
Mute
Internal Voltage
Reference
Control
Port
PLL
RST
AD0/CS
AD1/CDIN
SDA/CDOUT
SCL/CCLK
AINL+
AINL-
AINR+
AINR-
ADC#1
ADC#2
Digital Filter
Gain & Clip
Gain & Clip
Digital Filter
ADC
Serial
Audio
Port
Level Translator
ADCIN1
ADCIN2
ADC_SDOUT
ADC_LRCK
ADC_SCLK
VLS
AOUTA1+
AOUTA1-
AOUTB1+
AOUTB1-
Analog Filter
AOUTA2+
AOUTA2-
AOUTB2+
AOUTB2-
AOUTA3+
AOUTA3-
AOUTB3+
AOUTB3-
DAC#1
DAC#2
Volume Control
Digital Filter
DAC#3
DAC#4
DAC#5
DAC#6
DAC Serial Audio Port
Level Translator
DAC_LRCK
DAC_SCLK
DAC_SDIN1
DAC_SDIN2
DAC_SDIN3
Copyright
©
Cirrus Logic, Inc. 2005
(All Rights Reserved)
NOVEMBER '05
DS604F1
CIRRUS [ CIRRUS LOGIC ]
