Ic Block Diagram（Ic ブロック図 - Yamaha Portatone PSR-S700 Service Manual

PSR-S700/PSR-S900
IC BLOCK DIAGRAM（IC ブロック図）
SN74AHC08PWR (X2713A00)
Quad 2 Input AND
DM: IC029 (PSR-S900)
1A
1B
2
1Y
3
2A
4
2B
5
2Y
6
VSS
7
TC74ACT74FT(EL) (X6536A00)
DM: IC603 (PSR-S900)
TC74VHC74FT(EL,K) (XV892B00)
DM: IC309 (PSR-S900)
Dual D-Type Flip-Flop
1CLR
2
1D D
D
3
1CK CK
4
1PR
PR CK
5
Q
1Q
PR
6
Q
1Q Q
GND 7
Q
INPUTS
PR CLR CLK D
L H X X
H L X X
L L X X
H H f H
H H f L
H H L X
SN74LV175APWR (X5535A00)
Quad D-Type Flip-Flop
DM: IC907 (PSR-S700)
CL
2
1Q
Q CL CL Q
CK CK
Q D D Q
3
1Q
4
1D
5
2D
6
2Q Q D D Q
CK CK
Q CL CL Q
2Q 7
8
Vss
38
SN74AHC14PWR (X3098A00)
Hex Inverter
DM: IC011 (PSR-S700)
DM: IC004, 010 (PSR-S900)
VDD
4
4B
3
4A
2
4Y
3B
0
3A
9
3Y
8
GND
HD74LV126ATELL (X3123A00)
SN74LV126APWR (X3865A00)
TC74VHC126FT(EL,K) (X2891B00)
Bus Buffer
DM: IC003 (PSR-S900)
4 VCC
3
2CLR
2
2D
2CK
0
2PR
9
2Q
8
2Q
GND
OUTPUTS
Q Q
H L
L H
H H
H L
L H
Q Q
O O
HD74LV245ATELL-E (XW744A00)
SN74LV245APWR (X3693A00)
TC74VHC245FT(EL,K) (XU797B00)
Octal 3-State Bus Transceiver
DM: IC901-904 (PSR-S700)
DM: IC017-020, 023, 024 (PSR-S900)
6 VDD
5
4Q
D R
4
4Q
3 4D
2
3D
3Q
0 3Q
9 CK
GND
1A 4 VDD
2 3
1Y
6A
3
2
2A 6Y
4
2Y
5A
5
0
3A 5Y
6
9
3Y
4A
7
8
4Y
1G 4 Vcc
2 3
1A
4G
3
2
2Y 4A
4
2G
4Y
5
0
2A 3G
6
9
2Y
3A
7 8
3Y
20 V
CC
A 2 9 G
A2 3 8 B
A3 4 7 B2
A4 5 6 B3
A5 6 5 B4
A6 7 4 B5
A7 8 3 B6
A8 9 B7
2
0 B8
HD74LV21ATELL (X0010A00)
SN74LV21APWR (X2377A00)
Dual 4 Input AND
DM: IC908 (PSR-S700)
DM: IC021 (PSR-S900)
1A Vcc
4
1B 2D
2 3
NC 2C
3 2
1C NC
4
1D 2B
5 0
1Y 2A
6 9
GND 2Y
7 8
SN74LV139APWR (X7618A00)
DM: IC900 (PSR-S700)
TC74VHC139FT (XV893A00)
DM: IC028 (PSR-S900)
Dual 2 to 4 Demultiplexer
1G 6 Vcc
G
2 G
5
1A 2G
A
A
3
4
1B 2A
B
B
1Y0 4 3 2B
Y0
5 Y0 2
1Y1 2Y0
Y
6 Y
1Y2 2Y1
Y2
7 Y2
1Y3 0 2Y2
Y3
Y3
8
GND 9 2Y3
HD74LV273ATELL (X2689A00)
SN74LV273APWR (X5074A00)
Octal D-Type Flir Flop
DM: IC027 (PSR-S900)
20
CLEAR
2 9
1Q
Q Q
CL CL
3 D CK CK D 8
1D
4 7
2D
D CK CK D
CL CL
5 Q Q 6
2Q
6 5
3Q
Q Q
CL CL
7 4
3D D CK CK D
8 3
4D
D CK CK D
CL CL
9 2
4Q Q Q
0
GND
VCC
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLOCK