CS42L73 데이터 시트보기 (PDF) - Cirrus Logic

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CS42L73

Ultra Low Power Mobile Audio and Telephony CODEC

Cirrus Logic 

CS42L73

Ultra Low Power Mobile Audio and Telephony CODEC

Product Overview

For the full datasheet, visit

www.cirrus.com/codec-datasheets/CS42L73-17

 Stereo ADC

 Dual Analog or Digital MIC Support

 Dual MIC Bias Generators

 Four DACs Coupled to Five Outputs

– Ground-Centered Stereo Headphone Amp.

– Ground-Centered Stereo Line Output

– Mono Ear Speaker Amplifier

– Mono 1 W Speakerphone Amplifier

– Mono Speakerphone Line Output for Stereo

Speakerphone Expansion

 Three Serial Ports with Asynchronous Sample

Rate Converters

 Digital Audio Mixing and Routing

Ultra Low Power Consumption

 3.5 mW Quiescent Headphone Playback

Applications

 Smart Phones, UMPCs, and MIDs

System Features

 Native (no PLL required) Support for 6/12/24

MHz, 13/26 MHz, and 19.2/38.4 MHz Master

Clock Rates in Add. to Typ. Audio Clock Rates

 Integrated High-efficiency Power Management

Reduces Power Consumption

– Internal LDO Regulator to Reduce Internal

Digital Operating Voltage to VL/2

– Step-down Charge Pump Provides Low

Headphone/Line Out Supply Voltage

– Inverting Charge Pump Accommodates Low

System Voltage by Providing Negative Rail

for HP and Line Amp

 Flexible Speakerphone Amplifier Powering

– 3.00 V to 5.25 V Range

– Independent Cycling

 Power Down Management

– Individual Controls for ADCs, Dig. MIC

Interface, MIC Bias Generators, Serial Ports,

and Output Amplifiers & Associated DACs

 Programmable Thermal Overload Notification

 High-speed I²C™ Control Port (400 kHz)

(Features continued on page 2)

VL

VD_FILT

MCLK1

MCLK2

LDO

VD_FILT

MCLK

Control Port

Auxiliary Serial Port

Audio Serial Port

Voice Serial Port

Digital MIC Interface

Control Port

Auxiliary

Serial Port

SDIN

ASRC

ASRC

SDOUT

Audio

Serial Port

SDIN

ASRC

ASRC

SDOUT

Voice

Serial Port

SDIN

ASRC

ASRC

SDOUT

Digital MIC Interface

VA

VA

CS42L73

Digital Processing

Digital Mixer

MIC/Line Input Path

Auxiliary Serial Port

`+

Audio Serial Port

Voice Serial Port

VCP +VCP_FILT -VCP_FILT

Step-Down

Inverting

Volume, Mute, Limiter

Volume, Mute, Limiter

+VCP_FILT

-VCP_FILT

MCLK

Stereo

Multi-bit

 DAC

MCLK

Stereo

Multi-bit

 DAC

+VCP_FILT

-

+

-VCP_FILT

+VCP_FILT

-

+

-VCP_FILT

VA

B

VP

A

VP

B

Decimator,

HPF,

Noise

Gate,

ALC,

Volume,

Mute,

Swap/Mono

MCLK

Stereo

Multi-bit

 ADC

+

-

-6 to +12 dB,

0.5 dB steps

VP

MIC Bias

MIC Bias Short Detect

+10 or

+20 dB

+

-

+

-

+10 or

+20 dB

Headphone Outputs

Pseudo Diff. Input

Line Outputs

Pseudo Diff. Input

+

-

Ear

Speaker

Output

VP

+ Speakerphone Output

- (Left)

+ Speakerphone Line

- Output (Right)

Line Input (Left)

Pseudo Diff. Input

Line Input (Right)

MIC 1

Pseudo Diff. Input

MIC 2

Pseudo Diff. Input

Advance Product Information

http://www.cirrus.com

MIC 1 Bias MIC 2 Bias MIC2_SDET

This document contains information for a new product.

Cirrus Logic reserves the right to modify this product without notice.

Copyright  Cirrus Logic, Inc. 2010

(All Rights Reserved)

MAY ‘10

DS882PB1

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