CS42448 Datasheet, PDF (1/70 Pages) Cirrus Logic – 108 dB, 192 kHz 6-in, 8-out CODEC

CS42448
108 dB, 192 kHz 6-in, 8-out CODEC
FEATURES
GENERAL DESCRIPTION
z Six 24-bit A/D, Eight 24-bit D/A Converters
z ADC Dynamic Range
– 105 dB Differential
– 102 dB Single-ended
The CS42448 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 64-pin
LQFP package.
z DAC Dynamic Range
– 108 dB Differential
– 105 dB Single-ended
z ADC/DAC THD+N
– -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.
– -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 System Sampling Rates up to 192 kHz
channels of PCM data.
z Programmable ADC High-pass Filter for DC
Offset Calibration
z Logarithmic Digital Volume Control
z I²C & SPI™ Host Control Port
The CS42448 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 Supports Logic Levels Between 5 V and
1.8 V
z Popguard^® Technology
ORDERING INFORMATION
See page 67.
Control Port & Serial
Audio Port Supply =
1.8 V to 5 V
Digital Supply =
3.3 V to 5 V
Analog Supply =
3.3 V to 5 V
I²C/SPI
Software Mode
Control Data
Interrupt
Reset
Register
Configuration
ADC Overflow
& Clock Error
Interrupt
Internal Voltage
Reference
External
Mute Control
Mute
Control
Serial Audio
Input
Auxilliary Serial
Audio Input
Input Master
Clock
Serial Audio
Output
Volume
Controls
Digital
Filters
∆Σ
Modulators
Multibit
DAC1-4 and
Differential or
8
Single-Ended
Analog Filters
Outputs
8
High Pass
Filter
High Pass
Filter
Digital
Filters
Digital
Filters
Multibit
Oversampling
4
ADC1&2
4
Multibit
Oversampling
2
ADC3
2
*Optional MUX allows selection from up to 4 single-ended inputs.
Differential or
Single-Ended
Analog 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 ‘05
DS648PP2