Cirrus Logic CS4270 - Manual

Copyright  Cirrus Logic, Inc. 2010
(All Rights Reserved) http://www.cirrus.com
24-Bit, 192-kHz Stereo Audio CODEC
D/A Features
 High Performance
– 105 dB Dynamic Range
– -87 dB THD+N
 Selectable Serial Audio Interface Formats
– Left-Justified up to 24 bits
– I²S up to 24 bits
– Right-Justified 16, and 24 bits
 Control Output for External Muting
 Digital De-Emphasis
 Popguard ® Technology
 Multi-bit  Conversion
 Digital Volume Control
 Single-Ended Output
A/D Features
 High Performance
– 105 dB Dynamic Range
– -95 dB THD+N
 Multi-bit  Conversion
 High-Pass Filter to Remove DC Offsets
 Selectable Serial Audio Interface Formats
– Left-Justified up to 24 bits
– I²S up to 24 bits
 Single-Ended Input
System Features
 Direct Interface with Logic Levels 1.8 V to 5 V
 Internal Digital Loopback
 Stand-Alone or Serial Control Port Functionality
 Single-Ended Analog Architecture
 Supports all Audio Sample Rates from 4 kHz to
216 kHz
 3.3- or 5-V Core Supply
Internal Voltage
Reference
Software or
Stand-Alone
Configuration
Analog Out A
(Left)
PCM Serial
Audio Input
Volume
Control
ADC
Digital
Filter
Multi-bit 
Modulator
External Mute
Control
Mute Signals
PCM Serial
Audio Output
Configuration
Registers
Serial
Audio
Input
Level
Translators
Volume
Control
Serial
Audio
Output
High Pass
Filter
High Pass
Filter
Multi-bit 
Modulator
ADC
Digital
Filter
Switch-Cap
DAC and
Analog Filter
Switch-Cap
DAC and
Analog Filter
____
RST
VLC
1.8 V to 5 V
Switch-Cap
ADC
Switch-Cap
ADC
DAC
Digital
Filter
DAC
Digital
Filter
VD
3.3 V to 5 V
VA
3.3 V to 5 V
Analog Out B
(Right)
Analog Input A
(Left)
Analog Input B
(Right)
AUGUST '10
DS686F1
CS4270