KD-LX333
1-31
1
2
3
4
5
6
7
14
13
12
11
10
9
8
OE1
A1
Y1
OE2
A2
Y2
Vss
Vcc
OE4
A4
Y4
OE3
A3
Y3
HD74HC126
HD74HC126FP (IC771) : Changer control
M5282FP-X (IC321) : E. volume
1. Pin layout
2. Block diagram
1
10
1
2
3
10
4
5
7
8
9
1
2
3
4
5
6
7
8
9
10
Vcc/2 output for microphone amp.
Microphone amp. positive input terminal.
Microphone amp. negative input terminal.
Microphone amp. output terminal.
Ground.
Non connection.
VCA input terminal.
VCA control terminal.
VCA output terminal.
Power supply.
Amp+IN
Amp-IN
Amp OUT
GND
NC
VCA IN
Vc
VCA OUT
Vcc
Function
+ –
6
7
5
8
B
+
–
2
1
3
4
A
A OUT
A IN–
A IN+
VEE
VCC
B OUT
B IN–
B IN+
NJM2100M (IC821) : Operational amp
1
A OUT
2
A -IN
3
A +IN
4
8
7
6
5
GND
V
+
B OUT
B -IN
B +IN
NJM2904M (IC951) : Ope amp
1.Pin layout
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9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299