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CS42438 Datasheet, PDF (1/64 Pages) Cirrus Logic – 108 dB, 192 kHz 6-in, 8-out TDM CODEC | |||
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CS42438
108 dB, 192 kHz 6-in, 8-out TDM CODEC
FEATURES
GENERAL DESCRIPTION
z Six 24-bit A/D, Eight 24-bit D/A Converters
z ADC Dynamic Range
â 105 dB Differential
â 102 dB Single-ended
The CS42438 CODEC provides six multi-bit analog-to-digi-
tal and eight multi-bit digital-to-analog Delta-sigma
converters. The CODEC is capable of operation with either
differential or single-ended inputs and outputs, in a 52-pin
MQFP package.
z DAC Dynamic Range
â 108 dB Differential
â 105 dB Single-ended
z ADC/DAC THD+N
â -98 dB Differential
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.
â -95 dB Single-ended
All eight DAC channels provide digital volume control and
z Compatible with Industry-standard Time
can operate with differential or single-ended outputs.
Division Multiplexed (TDM) Serial Interface An auxiliary serial input is available for an additional two
z DAC Sampling Rates up to 192 kHz
channels of PCM data.
z ADC Sampling Rates up to 96 kHz
z Programmable ADC High-pass Filter for DC
Offset Calibration
z Logarithmic Digital Volume Control
The CS42438 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.
z Hardware Mode or Software I²C & SPIâ¢
z Supports Logic Levels Between 5 V and
ORDERING INFORMATION
1.8 V
See page 62.
Control Port & Serial
Audio Port Supply =
1.8 V to 5 V
Digital Supply =
3.3 V
Hardware Mode or
I2C/SPI Software Mode
Control Data
Reset
Register
Configuration
Analog Supply =
3.3 V to 5 V
Internal Voltage
Reference
TDM Serial Audio
Input
Auxilliary Serial
Audio Input
Input Master
Clock
TDM Serial Audio
Output
Volume
Controls
Digital
Filters
âΣ
Modulators
High Pass
Filter
High Pass
Filter
Digital
Filters
Digital
Filters
Multibit
8
DAC1-4 and
Analog Filters
8
Differential or
Single-Ended
Outputs
Multibit
Oversampling
ADC1&2
Multibit
Oversampling
ADC3
4
4
Differential or
Single-Ended
Analog Inputs
2
2
*Optional MUX allows selection from up to 4 single-ended inputs.
Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Cirrus Logic, Inc.
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2005
(All Rights Reserved)
FEB â05
DS646PP2
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