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M65856 Datasheet(PDF) 3 Page - Mitsubishi Electric Semiconductor

Part # M65856
Description  DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
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Manufacturer  MITSUBISHI [Mitsubishi Electric Semiconductor]
Direct Link  http://www.mitsubishichips.com
Logo MITSUBISHI - Mitsubishi Electric Semiconductor

M65856 Datasheet(HTML) 3 Page - Mitsubishi Electric Semiconductor

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ELECTRIC
MITSUBISHI
M65856SP
MITSUBISHI SOUND PROCESSOR ICs
DIGITAL ECHO WITH MICROPHONE MIXING CIRCUIT
PIN DESCRIPTION
Pin No.
Symbol
Name
I/O
Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
ALC1
MIC1NFIN
MIC1VOLIN
MIC2IN
ALC2
MIC2OUT
MIC2VOLIN
To connect ALC2 attack/recovery time
setting capacitor
I
I
Mixing output of MIC1 and MIC2
LPF1IN2
MICOUT
I
I
MIC1OUT
To connect MIC2
MIC2NFIN
I
I
I
LPF1IN1
I
LPF1OUT
O
ADINTOUT
ADINTIN
ADCONT
–
REF
Composes D/A conversion integrator with
external capacitor
–
VALC
MIC1IN
I
To connect ALC1 attack / recovery time
setting capacitor
To connect low cut-off frequency of MIC1
amplifier setting capacitor
21
To set ALC operating voltage according
to applied voltage
To connect MIC1
To determine adaptive time constant of
A/D convertor with ADM system
To connect 1/2 Vcc output and filter capacitor
Microphone 1 volume input
Microphone 2 input
ALC2 control
ALC1 control
Microphone 2 negative
feedback input
Microphone output
Low pass filter 1 output
A/D integrator output
Reference power output
ALC operating voltage setting
terminal
Microphone 1 input
Microphone 1 negative
feedback input
Microphone 1 output
A/D control
Microphone 2 volume input
Microphone 2 input
A/D integrator input
Low pass filter 1 input 2
Low pass filter 1 input 1
Pre-filter before A/D convertor for
digital delay
O
O
I
–
O
–
To connect capacitor to reduce noise generated
at time of volume change
To connect capacitor to reduce noise generated
at time of volume change
MCLKCONT
Clock control
Controls built-in clock generation circuit with
external R
–
To connect low cut-off frequency of MIC2
amplifier setting capacitor
–
MIC SW
I
L: MIC OFF H: MIC ON
Microphone SW


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