CS4271
24-Bit, 192 kHz Stereo Audio CODEC
D/A Features
!
High
A/D Features
!
High
Performance
Performance
– 114 dB Dynamic Range
– -100 dB THD+N
!
Up
– 108 dB Dynamic Range
– -98 dB THD+N
!
Up
to 192 kHz Sampling Rates
!
Differential Analog Architecture
!
Volume Control with Soft Ramp
– 1 dB Step Size
– Zero Crossing Click-free Transitions
!
Selectable
!
ATAPI
Digital Filters
– Fast and Slow Roll Off
to 192 kHz Sampling Rates
!
Single-Ended Analog Architecture
!
Multi-bit Delta Sigma Conversion
!
High-pass Filter or DC Offset Calibration
!
Low-Latency Digital Anti-alias Filtering
!
Automatic Dithering of 16-bit Data
!
Selectable Serial Audio Interface Formats
– Left Justified up to 24-bit
– I
2
S up to 24-bit
Mixing Functions
!
Selectable Serial Audio Interface Formats
– Left Justified up to 24-bit
– I
2
S up to 24-bit
– Right Justified 16-, 18-, 20-, and 24-Bit
!
Control
System Features
!
Direct
Output for External Muting
!
Selectable 50/15
µs
De-emphasis
Interface with 5V to 2.5V Logic Levels
!
Internal Digital Loopback
!
On-chip Oscillator
!
Stand-Alone or Control Port Functionality
5V
2.5 V to 5 V
3.3 V to 5 V
Level Translator
Hardware or
I
2
C/SPI
Control Data
Reset
Register / Hardware
Configuration
Internal Voltage
Reference
Internal
Oscillator
External
Mute Control
Left and
Right Mute
Controls
PCM Serial Interface / Loopback
Mixer
Volume
Control
Volume
Control
Selectable
Interpolation
Filter
Selectable
Interpolation
Filter
∆Σ
Modulator
Switched Capacitor
DAC and Filter
Left
Differential
Output
Right
Differential
Output
Level Translator
Serial
Audio
Input
Serial
Audio
Output
∆Σ
Modulator
Switched Capacitor
DAC and Filter
High Pass Filter &
DC Offset Calibration
High Pass Filter &
DC Offset Calibration
Low-Latency
Anti-Alias Filter
Low-Latency
Anti-Alias Filter
Multibit
Oversampling
ADC
Multibit
Oversampling
ADC
Left Input
Right Input
Cirrus Logic, Inc.
www.cirrus.com
Copyright
©
Cirrus Logic, Inc. 2005
(All Rights Reserved)
AUGUST '05
DS592F1
CIRRUS [ CIRRUS LOGIC ]
