Ic Block Diagram - Yamaha PSR-S710 Service Manual

PSR-S710/PSR-S910

IC BLOCK DIAGRAM

SN74LV14PWR (X6688A0R)
DML: IC1, IC7 (PSR-S710)
DMH: IC1, IC7 (PSR-S910)
Hex Inverter
1
1A
2
1Y
3
2A
2Y 4
5
3A
6
3Y
7
GND
SN74LV126APWR (X3865A0R)
DML: IC21 (PSR-S710)
DMH: IC31 (PSR-S910)
Bus Buffer
1
1G
2
1A
3
2Y
4
2G
5
2A
6
2Y
GND 7
SN74LVC245APWR (XZ287A0R)
DML: IC12–15, IC17, IC18 (PSR-S710)
SN74LV245APWR (X3693A0R)
DMH: IC15–18, IC20–23 (PSR-S910)
Octal 3-State Bus Transceiver
D1R 1
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
GND 10
34
TC74VHC21FT (EL) (X5542A00)
DML: IC9 (PSR-S710)
DMH: IC11 (PSR-S910)
Dual 4 Input AND
14
VDD
13
6A
NC
12
6Y
11
5A
10
5Y
9
4A
GND
8 4Y
TC74VHC139FT (EL) (XV893A0R)
DML: IC16 (PSR-S710)
DMH: IC19 (PSR-S910)
Dual 2 to 4 Demultiplexer
1G
14 Vcc
1A
13
4G
1B
12
4A
1Y0
11
4Y
1Y1
10
3G
1Y2
9
3A
1Y3
8
3Y
GND
TC74VHC273FT (X7942B00)
DMH: IC14 (PSR-S910)
Octal D-Type Flir Flop
20 V
CC
CLEAR
19 G
1Q
18 B1
1D
17 B2
2D
16 B3 2Q
3Q
B4
15
3D
B5
14
4D
B6
13
4Q
B7
12
GND
11 B8
1A Vcc
1 14
1B 2D
2 13
2C
3 12
1C NC
4 11
1D 2B
5 10
1Y 2A
6 9
2Y
7 8
1 16 Vcc
G
2
G 15
2G
A
A
3 14
2A
B
B
4
13 2B
Y0
5 Y0
12 2Y0
Y1
Y1
6 11
2Y1
Y2
7 Y2
10 2Y2
Y3
Y3
8 9 2Y3
1 20
VCC
2 19
8Q
Q Q
CL CL
3 D CK CK D 18
8D
4 17
7D
D CK CK D
CL CL
5 Q Q 16
7Q
6 15
6Q
Q Q
CL CL
7 D CK CK D 14
6D
8 13
5D
D CK CK D
CL CL
9 12
Q Q 5Q
10 11
CLOCK
TC74ACT74FT(EL) (X6536A0R)
DMH: IC604 (PSR-S910)
Dual D-Type Flip-Flop
1CLR 1 14
VCC
2
13
1D D 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
SN74LV175APWR (X5535A00)
DML: IC11, IC307 (PSR-S710)
DMH: IC305 (PSR-S910)
Quad D-Type Flip-Flop
1
CL 16 VDD
2
1Q 15 4Q
Q CL CL Q
CK CK
Q D D Q
3
14
1Q 4Q
4
1D 13 4D
5
12
2D 3D
6
11
2Q Q D D Q 3Q
CK CK
Q CL CL Q
7 10
2Q 3Q
8
Vss 9 CK
Q
L
H
H
L
H
Q
O