Yamaha DME4io-ES Service Manual page 28

DME4io-ES/DME8i-ES/DME8o-ES
IC BLOCK DIAGRAM（IC ブロック図）
SN74AHC00PWR (X4131A00)
GPI: IC602
Quad 2 Input NAND
1A
1
1B
2
1Y
3
2A
4
2B
5
2Y
6
Vss
7
SN74LV11APWR (X3516A00)
DSP: IC011
Triple 3 Input AND
1A
1
1B
2
2A
3
2B
4
2C
5
2Y
6
VSS
7
SN74LV74APWR (X5534A00)
DSP: IC056
SN74LVC74APWR (X5731A00)
ENT2: IC112, IC113
Dual D-Type Flip-Flop
1
1CLR
2
1D D
D
3
1CK CK
1PR 4
PR
CK
5 Q
1Q
PR
6
Q
1Q Q
7
GND
Q
28
SN74AHCT04PWR (X4525A00)
AD: IC702, IC703
SN74LV04APWR (X5965A00)
DSP: IC003, IC018, IC053
Hex Inverter
VDD
14
1A
4B
13
1Y
4A
12
2A
4Y
11
2Y
3B
10
3A
3A
9
3Y
3Y
8
Vss
SN74LV21APWR (X2377A00)
CPU: IC020
Dual 4 Input AND
VDD
14
1C
13
1Y NC
12
3C 1C
11
3B 1D
10
3A
9
3Y
GND
8
14
VCC
13
2CLR
12
INPUTS
2D
PR CLR CLK D
11
2CK
L H X X
10 H L X X
2PR
L L X X
9
2Q H H f H
H H f L
8 2Q
H H L X
1
14 VDD
2 13
6A
3 12
6Y
4
11
5A
5
10
5Y
6
9
4A
7
8
4Y
1A Vcc
1 14
1B 2D
2 13
2C
3 12
NC
4 11
2B
5 10
1Y 2A
6 9
2Y
7 8
OUTPUTS
Q Q
H L
L H
H H
H L
L H
Q Q
O O
SN74AHCT08PWR (X3824A00)
DSP: IC261
SN74LV08APWR (X4463A00)
DSP: IC051
Quad 2 Input AND
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
SN74LVC32APWR (X5405A00)
ENT2: IC115
SN74AHCT32PW (XZ347A00)
DSP: IC260
Quad 2 Input OR
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
SN74LV244APWR (X3292A00)
DSP: IC152, IC300
GPI: IC501
Octal 3-State Bus Buffer
VDD (Vcc)
1G
1 20
2G
2 19
1A1
1Y1
3 18
2Y4
1A2 2A4
4 17
1Y2
5 16
2Y3
1A3 2A3
6 15
1Y3
2Y2 7 14
2A2
8 13
1A4
1Y4
9 12
2Y1
2A1
(GND) Vss
10 11