M65854FP 查看數據表（PDF） - MITSUBISHI ELECTRIC

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M65854FP

DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT

MITSUBISHI ELECTRIC  

PRELIMINARY M65854FP 50 soNmoeticpear;aTmheistriisc

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DIGITAL ECHO

WITH

MITSUBISHI SOUND PROCESSOR ICs

MICROPHONE MIXING CIRCUIT

SE

KARAOKE

RI

E

S

PIN DESCRIPTION

Pin No. Symbol

1

MCLKCONT

Nam

Clock control

2

MIC1IN

Microphone 1 input

3

ALC1

4

MIC1NFIN

ALC1 control

Microphone 1 negative

feedback input

5

MIC1OUT

Microphone 1 input

6

MIC1VOLIN Microphone 1 volume input

I/O

Function

—

Controls built-in clock generation circuit with

external R

I To connect MIC1

—

To connect ALC attack / recovery time

setting capacitor

To connect low cut-off frequency of MIC1

I amplifier setting capacitor

O To connect capacitor to reduce noise generated

at time of volume change

I

7

MIC2IN

8

ALC2

9

MIC2NFIN

Microphone 2 input

ALC2 control

Microphone 2 negative

feedback input

I To connect MIC2

—

To connect ALC attack/recovery

setting capacitor

time

To connect low cut-off frequency of MIC2

I amplifier setting capacitor

10 MIC2OUT

Microphone 2 input

O

To connect capacitor to reduce noise generated

11

MIC2VOLIN Microphone 2 volume input

I at time of volume change

12 MICOUT

Microphone output

O Mixing output of MIC1 and MIC2

13 LPF1IN1

14 LPF1IN2

15 LPF1OUT

Low pass filter 1 input 1

Low pass filter 1 input 2

Low pass filter 1output

I

I

Pre-filter before A/D convertor for

digital delay

O

16 ADINTOUT

17 ADINTIN

18 ADCONT

19 REF

A/D integrator output

A/D integrator input

A/D control

Reference power output

O

Composes D/A conversion integrator with

external capacitor

I

—

To determine adaptive time constant of

A/D convertor with ADM system

— To connect 1/2 Vcc output and filter capacitor

20 GND

Ground

—

21 VCC

Power supply

—

MITSUBISHI

ELECTRIC

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