Ic Block Diagram - Yamaha DME 32 Service Manual

IC BLOCK DIAGRAM

MM74HCU04SJX (XY070A00)
TC74HC04AF (XS993A00)
HD74LVC04FP (XW905A00)
Hex Inverter
MAIN: IC16, 25
PNR: IC103
1
1A 14
VDD
2
13
1Y 6A
3
12
2A
6Y
4 11
2Y 5A
5 10
3A
5Y
6
9
3Y
4A
7
Vss 8
4Y
MM74HC74ASJX (XY153A00)
Dual D-Type Flip-Flop
MAIN: IC17, 22
1
1CLR 14
VCC
2
D 13
1D 2CLR
D
3
12
1CK CK
2D
4 11
1PR PR 2CK
CK
5 Q 10
1Q
2PR
PR
6
9
Q
1Q Q 2Q
7
GND 8
2Q
Q
INPUTS OUTPUTS
PR CLR CLK D Q
L H X X H
H L X X L
L L X X H
H H f H H
H H f L L
H H L X Q
O
MM74HC151SJX (XY308A00)
8 to 1 Data Selector
MAIN: IC26, 62, 63
3 1 16 Vcc
D3
2 2
15 4
D2 D4
Data
Inputs
1
3 D1 14 5
D5
0
4 6
D0 13
D6
Y 5 7
Y D7 12
Outputs
A
W 6 W A 11
Strobe
7
S 10 B
B
C
GND
8
9 C
MM74HC14SJX (XW104A00)
Hex Inverter
MAIN: IC19
1
1A
2
1Y
3
2A
4
2Y
5
3A
6
3Y
7
GND
TC74HC123AF (XN242A00)
Dual Retriggerable Single Shot
MAIN: IC41
1A
1
1B
2
1
3
1Q
4
2Q
5
2 Cext
6
2 Rext / Cext
7
Q
GND
8
L
H
H
L
H
Q
O
TC74HC153AFEL (XY309A00)
Dual 4 to 1 Data Selectors
MAIN: IC27
1G SELECT 1
STROBE B 2
3
Data
Inputs
4
DATA
INPUTS
5
6
Data
OUTPUT 1Y 7
Select
GND
8
14
VDD
13
6A
12
6Y
11
5A
10
5Y
9
4A
8
4Y
Vcc
16
1 Rext / Cext
15
Cext
14
CLR
1Q
Q Q 13
2Q
12
Q Q
CLR CLR
11
2B
10
9 2A
16 Vcc
15 SELECT 2G
1G
14 STROBE A
IC3
2G
IC2
13
2C3
IC1 12
2C2
DATA
B
B
INPUTS
IC0 2C1
11
B B
A
A
1Y 2C0 10
A
A
2Y 9 OUTPUT 2Y
74VHC32SJX (XY306A00)
Quad 2 Input OR
MAIN: IC3, 5
1A Vcc
1 14
1B 4B
2 13
1Y 4A
3 12
2A 4Y
4 11
2B 3B
5 10
2Y 3A
6 9
GND 3Y
7 8
TC74VHC138F (XT015A00)
3 to 8 Demultiplexer
MAIN: IC64, 65
1
A 16 Vcc
A
Select
2
B Y0 15
B YO
3
14
C C Y1 Y1
4 13
G2A G2A Y2 Y2
Enable
5 G2B 12
G2B Y3 Y3
6
11
G1 Y4
G1 Y4
Output
7
Y7 Y7 Y5 10 Y5
Y6
GND 8 9 Y6
MM74HC157SJX (XY310A00)
Quad 2 to 1 Multiplexer
MAIN: IC108, 109
SELECT 1 16 Vcc
2
1A G 15
1A STROBE
3 1B 4A 14
1B 4A
4
1Y 1Y 4B 13 4B
5
2A 4Y 12
2A 4Y
6 2B 3A 11
2B 3A
7
2Y 2Y 3B 10 3B
8
GND 9 3Y
DME32
Output
19