Ic Block Diagram - Yamaha 01v 96 Service Manual

IC BLOCK DIAGRAM

TC74VHC00F (XT229A00)
MAIN: IC138
Quad 2 Input NAND
1A VDD
1 14
1B 4B
2 13
1Y 4A
3 12
2A 4Y
4 11
2B 3B
5 10
2Y 3A
6 9
Vss 3Y
7 8
TC74VHC14F-EL (XW876A00)
ADA: IC005
Hex Inverter
1
1A 14 VDD
2
1Y 13
6A
3
12
2A
6Y
4
2Y 11
5A
5
10
3A
5Y
6
9
3Y 4A
7 8
GND 4Y
74VHC138SJX (XY873A00)
MAIN: IC707, 708, 714
3 to 8 Demultiplexer
1
A 16 Vcc
A
Select
2 B 15
B Y0 YO
3
C Y1 14
C Y1
4
G2A G2A Y2 13 Y2
Enable
5
G2B Y3 12
G2B Y3
6
G1 Y4 11
G1 Y4
Output
Y7 7 10 Y5
Y7 Y5
Y6
8
GND 9 Y6
74VHC04SJX (XY871A00)
MAIN: IC131, 453
SN74HCU04NSR (XW842A00)
ADA: IC007
Hex Inverter
1A 1
2
1Y
3
2A
4
2Y
5
3A
6
3Y
7
Vss
TC74VHC74F-EL (XW875A00)
MAIN: IC024, 307, 455
Dual D-Type Flip-Flop
1
1CLR
2
1D D
3
1CK CK
4
1PR
PR
5
Q
1Q
6
Q
1Q
7
GND
INPUTS
PR CLR CLK
L H X
H L X
L L X
H H f
H H f
H H L
74VHC157SJX (XY870A00)
MAIN: IC402, 403
Quad 2 to 1 Multiplexer
1
SELECT
2 1A
1A
3
1B
1B
4
1Y 1Y
Output
5
2A
2A
6
2B
2B
2Y 7 2Y
8
GND
74VHC08SJX (XY872A00)
MAIN: IC014, 015, 503
Quad 2 Input AND
14 VDD
13
6A
12
6Y
11
5A
10
5Y
9
4A
8
4Y
HD74HC123AP (IR012310)
DCA: IC350
Dual Retriggerable Signale Shot
14 VCC
13
2CLR
D
12
2D
11
2CK
CK
10
2PR
PR
9
Q 2Q
8
2Q
Q
OUTPUTS
D Q Q
X H L
X L H
X H H
H H L
L L H
X Q Q
O O
TC74VHC244F (XT800A00)
ADA: IC006
Octal 3-State Bus Buffer
16 Vcc
G 15
STROBE
4A 14
4A
4B 13 4B
4Y 12
4Y
3A 11
3A
3B 10 3B
9 3Y
1A VDD
1 14
1B 4B
2 13
1Y 4A
3 12
2A 4Y
4 11
2B 3B
5 10
2Y 3A
6 9
VSS 3Y
7 8
1A
Vcc
1 16
1B 1 Rext / Cext
2 15
1 Cext
3 CLR 14
1Q 1Q
4 Q 13
Q
2Q 2Q
5 12
Q
Q
2 Cext CLR CLR
6 11
2 Rext / Cext 2B
7 10
GND
8 9 2A
1G VDD (Vcc)
1 20
2G
2 19
1A1
1Y1
3 18
2Y4
1A2 2A4
4 17
1Y2
5 16
2Y3
1A3 2A3
6 15
1Y3
7 14
2Y2
2A2
8 13
1A4
1Y4
2Y1 9 12
(GND) Vss 2A1
10 11
01V96
41