Ic Block Diagram（Ic ブロック図 - Yamaha n8 Service Manual

IC BLOCK DIAGRAM（IC ブロック図）
HD74LVC08TELL (X4961A00)
DM-A (n8): IC146
DM-B (n12): IC146
MLAN: IC115,116,125,126
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
HD74LVC244ATELL (X2308A00)
MLAN: IC121
Octal 3-State Bus Buffer
1G VDD (Vcc)
1 20
2G
2 19
1A1
1Y1
3 18
2Y4
1A2 2A4
4 17
1Y2
5 16
2Y3
2A3
1A3
6 15
1Y3
2Y2 7 14
2A2
8 13
1A4
1Y4
9 12
2Y1
(GND) Vss 2A1
10 11
NE5532DR (X5482A00)
DM-A (n8): IC155-158,163
DM-B (n12): IC144,145,155-163
HA-A: IC109-112
HA-B (n12 only): IC109-112
JK-A (n8): IC103-108
JK-B (n12): IC103-108
Dual Operational Amplifier
+DC Voltage
Output A
1 +V 8
Supply
Inverting
Output B
2 7
Input A - +
Inverting
Non-Inverting
3 6
+ -
Input B
Input A
Non-Inverting
Ground
4 5
Input B
HD74LVC14TELL-E (X5213A00)
DM-A (n8): IC103,105
DM-B (n12): IC103,105
Hex Inverter
1A 1 14
VDD
2
13
1Y
6A
3 12
2A
6Y
4
2Y 11
5A
5
3A 10
5Y
6 9
3Y
4A
7
GND 8
4Y
SN74LV4051ANSR (X3955A00)
PN-A (n8): IC500-507
PN-B (n12): IC500-507
PNSB (n12 only): IC201-205
Single 8-Channel
Multiplexer/Demultiplexer
Y4
Vcc
1 16
Y6 Y2
2 15
COM Y1
3 14
Y7 Y0
4 13
Y5 Y3
5 12
INH A
11
6
GND B
LOGIC
7 10
GND C
8
9
INPUTS
ON
INH C B A CHANNEL
L L L L Y0
L L L H Y1
L L H L Y2
L L H H Y3
L H L L Y4
L H L H Y5
L H H L Y6
L H H H Y7
H X X X None
TC7W14FU (XN883A00)
MLAN: IC108
Triple lnverter
1A 1 8 Vcc
3Y 1Y
2 7
3 6
2A 3A
4 5
GND 2Y
SN74LVC74APWR (X5731A00)
DM-A (n8): IC122,125,126,185
DM-B (n12): IC122,125,126,185
MLAN: IC113,114,117
Dual D-Type Flip-Flop
1CLR 1 14
VCC
2
13
1D D
2CLR
D
3 12
1CK
CK 2D
4
1PR PR 11
CK 2CK
5 Q
1Q 10
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
SN74AHCT245PWR (X2709A00)
DM-A (n8): IC129
DM-B (n12): IC129
SN74LVC245ANSR (X7206A00)
PN-A (n8): IC509
PN-B (n12): IC509
PNSB (n12 only): IC200
SN74LVC245APWR (XZ287A00)
DM-A (n8): IC112,113,116-118,128
DM-B (n12): IC112,113,116-118,128
MLAN: IC118,119,123,124
Octal 3-State Bus Transceiver
D1R 1 20 V
CC
A1 2 19 G
A2 3 18 B1
A3 4 B2
17
A4 5 B3
16
A5 6 B4
15
A6 7 14 B5
A7 8 13 B6
A8 9 12 B7
GND 10 11 B8
n8/n12
Q
L
H
H
L
H
Q
O
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