AK7750VT 데이터 시트보기 (PDF) - Asahi Kasei Microdevices

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AK7750VT

Audio DSP with Built-in Hands-Free Phone Features

Asahi Kasei Microdevices 

[ASAHI KASEI]

[AK7750]

(1) Hands-Free Mode Diagram

Block Diagram

Speaker

D/A

DSP Block

Echo

Canceller

VAD

Filter

Tel. Line

Digital

OUT(8ch)

Digital

IN(8ch)

µP

I/F

Ctrl.

VAD

D/A

voice

SW

Filter

iFFT

Spectrum

FFT

Subtraction

Noise Canceller

I/F

ARM Processor

Filter

+

RAM

ROM

PLL

EEPROM

(2) Audio Surround Mode Diagram

Block Diagram

Speaker

D/A

DSP Block

Sound processing

(EQ,Surround,…)

A/D

Tel. Line

A/D

Mic.

A/D

Audio_in

Speaker

Digital

OUT(6(8))ch)

Digital

IN(8(10))ch)

µP

I/F

D/A

voice

SW

I/F

A/D

Audio_in

ROM

RAM

PLL

VAD

iFFT

Spectrum

Subtraction

FFT

Noise Canceller

ARM Processor

OFF

Block Diagram

EEPROM

[MS0296-E-00]

3

2005/03

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