Datasheet > CM6571

CM6571

更新时间： 2024-11-29 01:24:39

品牌	Logo	应用领域
骅讯 - CMEDIA		/
页数	文件大小	规格书
63页	1584K
描述
USB 2.0 full speed-compliant

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CM6571 数据手册

CM6571

USB Audio Sound Chip

DESCRIPTION

FEATURES

The CM6571 is a USB 2.0 audio chip with a built-in

8051 and DSP designed for a wide range of

applications. With an internal two-channel

ADC/DAC, S/PDIF, it is perfectly suited for gaming

headset, speakerphone, surround speaker or Apple

docking applications.



USB 2.0 full speed-compliant

USB audio device class 1.0-compliant

USB human interface device (HID) class

1.1-compliant



Built-in DSP for voice and audio process

Voice process supports ENC, AEC and NR

The CM6571 is a USB audio class 1.0-compatible,

boasting plug and play functionality without

installing additional software on popular operating

systems. The internal DAC/ADC and S/PDIF out

Audio process supports Xear™ Surround, Sonic

and parameter EQ

interface

supports

96k/88.2k/48k/44.1kHz



Embedded 1T 8051

sampling rates and 16/24-bit resolutions.

Two-channel DAC for audio output interface

Two-channel ADC for audio input interface

Aux in for AEC signal reference

Furthermore, the DSP inside CM6571 supports voice

and audio process. Voice process includes

Environment Noise Cancellation, Acoustic Echo

Cancellation and Noise Reduction, functions that

produce better communication experience. Audio

process includes Xear™ surround headphone, sound

expander, dynamic bass, audio brilliant, smart

volume and parameter Equalizer, processes that

enrich music playback, movie and gaming battle

sound vividness.

Built-in 96k/88.2k/48k/44.1kHz and 16/

24-bit S/PDIF transmitter



Supports I2S in/out interface and up to 96kHz/

24 bits

Built-in AGC on recording path

BLOCK DIAGRAM

Aux In

DMIC

2 Channel I2S In

-14 ~ 49dB,

-1dB/step

Initial 20dB

USB

PHY

Microphone In

USB

Control

Engine

-14 ~ 49dB,

-1dB/step

Initial 20dB

ADC

AGC

Line In

-26 ~ 37dB,

-1dB/step

Initial 0dB

I2C

EEPROM

DSP

5 band EQ

-30 ~ 12dB,

-1dB/step

Initial 0dB

RAM(16K)

ROM(18K)

-15 ~ 32dB,

-1dB/step

Initial 20dB

-62 ~ 0dB,

-1dB/step

Initial 0dB

MCU

8051

DAC

Speaker/ Heaphone

GPIO

SPI IF

UART IF

I2C

2 Channel I2S Out

SPDIF Out

5 band EQ

Revised: Nov. 2012

www.cmedia.com.tw

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