CRD42L51 Cirrus Logic Inc, CRD42L51 Datasheet
CRD42L51
Manufacturer Part Number
CRD42L51
Description
Ref Bd Low-voltage Stereo Codec
Manufacturer
Cirrus Logic Inc
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DIGITAL to ANALOG FEATURES
98 dB Dynamic Range (A-wtd)
-86 dB THD+N
Headphone Amplifier - GND Centered
Digital Signal Processing Engine
Programmable Peak-Detect and Limiter
Pop and Click Suppression
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Beep Generator
http://www.cirrus.com
Mode or I
SPI Software
Serial Audio
Control Data
Serial Audio
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
Tone Selections Across Two Octaves
Separate Volume Control
Programmable On & Off Time Intervals
Continuous, Periodic or One-Shot Beep
Selections
Hardware
Low Power, Stereo CODEC with Headphone Amp
Output
Reset
Mode
Input
2
C &
1.8 V to 3.3 V
Configuration
Register
Generator
1.8 V to 2.5 V
Beep
High Pass
Filters
Processing
Engine
Digital
Signal
ALC
ALC
Copyright © Cirrus Logic, Inc. 2006
Controls
Volume
(All Rights Reserved)
MUX
MUX
ANALOG to DIGITAL FEATURES
∆Σ Modulator
Oversampling
Oversampling
Multibit
Multibit
Multibit
ADC
ADC
98 dB Dynamic Range (A-wtd)
Analog Gain Controls
+20 dB Digital Boost
Programmable Automatic Level Control (ALC)
Independent Channel Control
Digital Volume Control
High-Pass Filter Disable for DC Measurements
Stereo 3:1 Analog Input MUX
Dual MIC Inputs
Very Low 64 Fs Oversampling Clock Reduces
Power Consumption
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-88 dB THD+N
+32 dB or +16 dB MIC Pre-Amplifiers
Analog Programmable Gain Amplifier
(PGA)
Noise Gate for Noise Suppression
Programmable Threshold and
Attack/Release Rates
Programmable, Low Noise MIC Bias Levels
Differential MIC Mix for Common Mode
Noise Rejection
1.8 V to 2.5 V
MUX
MUX
Capacitor DAC
Capacitor DAC
and Filter
Switched
Switched
and Filter
PGA
PGA
MUX
1.8 V to 2.5 V
Headphone
Amp - GND
Headphone
Amp - GND
Centered
Centered
Charge
Pump
MIC
Bias
+32 dB
+32 dB
CS42L51
Left HP Out
Right HP Out
Stereo Input 1
Stereo Input 2
Stereo Input 3 /
Mic Input 1 & 2
DS679F1
JULY '06
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