Cirrus Logic CS42L51 - Manual

Copyright
© Cirrus Logic, Inc. 2006
(All Rights Reserved) http://www.cirrus.com
JULY '06
DS679F1
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
– 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
 Digital Signal Processing Engine
– Bass & Treble Tone Control, De-Emphasis
– PCM + ADC Mix w/Independent Vol Control
– Master Digital Volume Control
– Soft Ramp & Zero Cross Transitions
 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
ANALOG to DIGITAL FEATURES
 98 dB Dynamic Range (A-wtd)
 -88 dB THD+N
 Analog Gain Controls
– +32 dB or +16 dB MIC Pre-Amplifiers
– Analog Programmable Gain Amplifier
(PGA)
 +20 dB Digital Boost
 Programmable Automatic Level Control (ALC)
– 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
– 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 3.3 V
Multibit
∆Σ Modulator
Charge
Pump
Left HP Out
Right HP Out
Multibit
Oversampling
ADC
Multibit
Oversampling
ADC
Serial Audio
Input
Serial Audio
Output
1.8 V to 2.5 V 1.8 V to 2.5 V
MUX
PGA
P
C
M Se
rial
Int
e
rfa
c
e
Register
Configuration
Le
v
e
l Tr
a
n
slat
or
Reset
Hardware
Mode or I 2 C &
SPI Software
Mode
Control Data
Stereo Input 1
Stereo Input 2
Stereo Input 3 /
Mic Input 1 & 2
PGA
+32 dB
+32 dB
Volume
Controls
Beep
Generator
MUX
MUX
Headphone
Amp - GND
Centered
Headphone
Amp - GND
Centered
ALC
MIC
Bias
1.8 V to 2.5 V
MUX
MUX
Switched
Capacitor DAC
and Filter
Switched
Capacitor DAC
and Filter
High Pass
Filters
ALC
Digital
Signal
Processing
Engine
CS42L51