CS42435
108 dB, 192 kHz 4-In, 8-Out TDM CODEC
FEATURES
GENERAL DESCRIPTION
The CS42435 CODEC provides four multi-bit analog-to-
digital and eight multi-bit digital-to-analog delta-sigma
converters. The CODEC is capable of operation with ei-
ther differential or single-ended inputs and outputs, in a
52-pin MQFP package.
Four 24-bit A/D, Eight 24-bit D/A Converters
ADC Dynamic Range
–
–
105 dB Differential
102 dB Single-Ended
DAC Dynamic Range
Four fully differential, or single-ended, inputs are avail-
able on stereo ADC1 and ADC2. Digital volume control
is provided for each ADC channel, with selectable over-
flow detection. An auxiliary serial input is available for
an additional two channels of PCM data.
–
–
108 dB Differential
105 dB Single-Ended
ADC/DAC THD+N
–
–
-98 dB Differential
-95 dB Single-Ended
All eight DAC channels provide digital volume control
and can operate with differential or single-ended
outputs.
Compatible with Industry-Standard Time
The CS42435 is available in a 52-pin MQFP package in
Commercial (-40°C to +85°C) and Automotive (-40°C to
+105°C) grades. The CDB42438 Customer Demonstra-
tion board is also available for device evaluation and
implementation suggestions. Please refer to “Ordering
Information” on page 57 for complete ordering
information.
Division Multiplexed (TDM) Serial Interface
DAC Sampling Rates up to 192 kHz
ADC Sampling Rates up to 96 kHz
Programmable ADC High-Pass Filter for DC
Offset Calibration
The CS42435 is ideal for audio systems requiring wide
dynamic range, negligible distortion and low noise, such
as A/V receivers, DVD receivers, and automotive audio
systems.
Logarithmic Digital Volume Control
Hardware Mode or Software I²C® & SPI™
Supports Logic Levels Between 5 V and 1.8 V
Control Port & Serial
Audio Port Supply =
1.8 V to 5 V
Analog Supply =
3.3 V to 5 V
Digital Supply = 3.3 V
Hardware Mode or
I2C/SPI Software Mode
Control Data
Internal Voltage
Reference
Register
Configuration
Reset
Differential or
Single-Ended
Outputs
Multibit
DAC1-4 and
Analog Filters
8
8
TDM Serial Audio
Input
Volume
Controls
Digital
Filters
ΔΣ
Modulators
Auxilliary Serial
Audio Input
Multibit
Oversampling
ADC1
High Pass
Filter
Digital
Filters
2
Input Master
Clock
Differential or
Single-Ended
Analog Inputs
2
Multibit
Oversampling
ADC2
High Pass
Filter
Digital
Filters
TDM Serial Audio
Output
2
2
Copyright © Cirrus Logic, Inc. 2007
DECEMBER '07
DS685F2
(All Rights Reserved)
http://www.cirrus.com