CRD42L51 Cirrus Logic Inc, CRD42L51 Datasheet

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CRD42L51

Manufacturer Part Number

CRD42L51

Description

Ref Bd Low-voltage Stereo Codec

Manufacturer

Cirrus Logic Inc

Datasheets

1.CRD42L51.pdf (88 pages)

2.CRD42L51.pdf (82 pages)

Current page: 1 of 88
Download datasheet (2Mb)

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

–

–

–

–

–

–

–

–

–

–

–

–

–

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

–

–

–

–

–

–

-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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