
Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright
Cirrus Logic, Inc. 2005
(All Rights Reserved)
Cirrus Logic, Inc.
http://www.cirrus.com
FEATURES
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Six 24-bit A/D, Six 24-bit D/A Converters
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ADC Dynamic Range
– 105 dB Differential
– 102 dB Single-ended
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DAC Dynamic Range
– 108 dB Differential
– 105 dB Single-ended
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ADC/DAC THD+N
– -98 dB Differential
– -95 dB Single-ended
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Compatible with Industry-standard Time
Division Multiplexed (TDM) Serial Interface
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DAC Sampling Rates up to 192 kHz
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ADC Sampling Rates up to 96 kHz
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Programmable ADC High-pass Filter for DC
Offset Calibration
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Logarithmic Digital Volume Control
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Hardware Mode or Software I2C & SPI
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Supports Logic Levels Between 5 V and
1.8 V
GENERAL DESCRIPTION
The CS42436 CODEC provides six multi-bit analog-to-digi-
tal
and
six
multi-bit
digital-to-analog
converters. The CODEC is capable of operation with either
differential or single-ended inputs and outputs, in a
52
-pin
M
QFP package.
Delta-sigma
Six fully differential, or single-ended, inputs are available on
stereo ADC1, ADC2, and ADC3. When operating in Single-
ended Mode, an internal MUX before ADC3 allows selec-
tion from up to four single-ended inputs. Digital volume
control is provided for each ADC channel, with selectable
overflow detection.
All
six
DAC channels provide digital volume control and can
operate with differential or single-ended outputs.
An auxiliary serial input is available for an additional two
channels of PCM data.
The CS42436 is ideal for audio systems requiring wide dy-
namic range, negligible distortion and low noise, such as
A/V receivers, DVD receivers, and automotive audio
systems.
ORDERING INFORMATION
See page 63
.
Control Port & Serial
Audio Port Supply =
1.8 V to 5 V
Register
Configuration
Internal Voltage
Reference
Reset
T
I
L
L
TDM Serial Audio
Input
Digital Supply =
3.3 V
Hardware Mode or
I
2
C/SPI Software Mode
Control Data
Analog Supply =
3.3 V to 5 V
Differential or
Single-Ended
Outputs
6
Input Master
Clock
6
TDM Serial Audio
Output
Multibit
Oversampling
ADC1&2
High Pass
Filter
Differential or
Single-Ended
Analog Inputs
4
Digital
Filters
4
*Optional MUX allows selection from up to 4 single-ended inputs.
Multibit
Oversampling
ADC3
High Pass
Filter
2
Digital
Filters
2
4
Auxilliary Serial
Audio Input
Volume
Controls
Digital
Filters
Multibit
DAC1-3 and
Analog Filters
Σ
Modulators
CS42436
FEB ‘05
DS647PP2
108 dB, 192 kHz 6-in, 6-out TDM CODEC