CS42L51
Low Power, Stereo CODEC with Headphone Amp
DIGITAL to ANALOG FEATURES
!
98 dB Dynamic Range (A-wtd)
!
-86 dB THD+N
!
Headphone Amplifier - GND Centered
ANALOG to DIGITAL FEATURES
!
98 dB Dynamic Range (A-wtd)
!
-88 dB THD+N
–
–
+32 dB or +16 dB MIC Pre-Amplifiers
Analog Programmable Gain Amplifier
(PGA)
!
Analog Gain Controls
–
–
–
–
–
–
–
–
–
!
On-Chip Charge Pump Provides -VA_HP
No DC-Blocking Capacitor Required
46 mW Power Into Stereo 16
Ω
@ 1.8 V
88 mW Power Into Stereo 16
Ω
@ 2.5 V
-75 dB THD+N
Bass & Treble Tone Control, De-Emphasis
PCM + ADC Mix w/Independent Vol Control
Master Digital Volume Control
Soft Ramp & Zero Cross Transitions
!
+20 dB Digital Boost
!
Programmable Automatic Level Control (ALC)
!
Digital Signal Processing Engine
–
–
Noise Gate for Noise Suppression
Programmable Threshold and
Attack/Release Rates
!
Independent Channel Control
!
Digital Volume Control
!
High-Pass Filter Disable for DC Measurements
!
Stereo 3:1 Analog Input MUX
!
Dual MIC Inputs
Beep Generator
– Tone Selections Across Two Octaves
– Separate Volume Control
– Programmable On & Off Time Intervals
– Continuous, Periodic or One-Shot Beep
Selections
–
–
!
Programmable Peak-Detect and Limiter
!
Pop and Click Suppression
Programmable, Low Noise MIC Bias Levels
Differential MIC Mix for Common Mode
Noise Rejection
!
Very Low 64 Fs Oversampling Clock Reduces
Power Consumption
1.8 V to 2.5 V
MUX
1.8 V to 3.3 V
1.8 V to 2.5 V
1.8 V to 2.5 V
Headphone
Amp - GND
Centered
Headphone
Amp - GND
Centered
Charge
Pump
Serial Audio
Input
Hardware
Mode or I
2
C &
SPI Software
Mode
Control Data
Beep
Generator
Digital
Signal
Processing
Engine
MUX
Multibit
∆Σ
Modulator
Switched
Capacitor DAC
and Filter
Switched
Capacitor DAC
and Filter
Left HP Out
Right HP Out
PCM Serial Interface
Level Translator
ALC
Multibit
Oversampling
ADC
Multibit
Oversampling
ADC
MUX
Reset
PGA
MUX
+32 dB
Stereo Input 1
Stereo Input 2
Stereo Input 3 /
Mic Input 1 & 2
+32 dB
Serial Audio
Output
High Pass
Filters
Volume
Controls
MUX
PGA
Register
Configuration
ALC
MIC
Bias
Advance 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)
SEPTEMBER '05
DS679A2
CIRRUS [ CIRRUS LOGIC ]
