CX20708 Features

CODEC

High Fidelity 16-bit ADC

Configurable Microphone Pre-

amp, up to 40 dB

Mic Bias

On-chip, 50 MIPS, Dual Core

Audio Processor

Fractional SRC and Sync Buffers

Serial Data Interface (I2S/PCM)

USB 2.0, Full Speed UAC

compliant interface, Slave

Support Asynchronous USB

Audio Data Transfer Mode

Super Wideband Voice

Processing Algorithms

Sub-band Acoustic Echo

Canceller

Beam Forming

In-band Acoustic Noise Reduction

Far Field Pickup Microphone Auto

Gain Control

Parametric Microphone EQ

Audio sample rate: 8,16, 24, 32,

44.1, 48 kHz

9x9mm 76 QFN Package

Conexant Product Portfolio

Conexant’s comprehensive product portfolio includes solutions for imaging, audio, video surveillance, and embedded modem applications.

DMA

DSP

Memory

Controller

DMA

UART

Jack

Sense

Clock

Circuitry

Bias

Generator

MON

ADC

USB

PCM/I2S

Volume

ADC

ADC

MIC In

MIC In

Mic Bias

Mic Bias

XTAL In/

Master In

XTAL Out

Sense

Voltage Monitor

SPI

I2C Slave

DSP

PCM/I2S

CX20708 Interface Diagram

© 2011 Conexant Systems, Inc. All Rights Reserved. Conexant and the

Conexant logo are registered trademarks of Conexant Systems, Inc. All other

trademarks are owned by their respective owners. Although Conexant strives

for accuracy in all its publications, this material may contain errors or

omissions and is subject to change without notice. THIS MATERIAL IS

PROVIDED AS IS AND WITHOUT ANY EXPRESS OR IMPLIED

WARRANTIES, INCLUDING MERCHANT ABILITY, FITNESS FOR A

PAPARTICULAR PURPOSE AND NON-INFRINGEMENT. Conexant shall

not be liable for any special, indirect, incidental or consequential damages as

a result of its use.

www.conexant.com

General Information:

U.S. and Canada: (888) 855-4562

International: 1+ (949) 483-3000

Headquarters

4000 MacArthur Blvd.

Newport Beach, CA 92660

Doc# PBR-202748