Ic Block Diagram - Yamaha O2R96 Service Manual

02R96

IC BLOCK DIAGRAM

02R96
TC74VHC00F (XT229A00)
CPU1: IC133
DSP: IC058 ,704
MM74HC00SJX (XW105A00)
FD1: IC138
FD2: IC127
HD74LV00AFPEL (IS000000)
SUB: IC704
Quad 2 Input NAND
1A
1
1B
2
1Y
3
2A
4
2B
5
2Y
6
Vss
7
TC74VHC14F-EL (XW876A00)
DSP: IC057, 072
JK1: IC456
JK2 (1/2): IC701
Hex Inverter
1A 1
2
1Y
3
2A
4
2Y
5
3A
6
3Y
7
GND
TC74VHC74F-EL (XW875A00)
DSP: IC105
Dual D-Type Flip-Flop
1
1CLR
2
D
1D
D
3
1CK CK
4
1PR PR
CK
5 Q
1Q
PR
6
Q
1Q Q
7
GND
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
64
TC74VHC11F (EL) (XT812A00)
DSP: IC411-413
Triple 3 Input AND
VDD
14
4B
13
VSS
4A
12
4Y
11
3B
10
3A
9
3Y
8
TC74VHC32F (EL) (XY537A00)
CPU1: IC136, 141
DSP: IC032, 955
TC74HC32AF (XN241A00)
DSP: IC033
Quad 2 Input OR
14 VDD
13
6A
12
6Y
11
5A
10
5Y
9
4A
8
4Y
TC74VHC125F (XW313A00)
DSP: IC705
JK1: IC301
HD74LV125AFPEL (IS012500)
SUB: IC703
Quad 3-State Bus Buffer
14
VCC
13
2CLR
12
2D
11
2CK
10
2PR
9
2Q
8
2Q
OUTPUTS
Q Q
H L
L H
H H
H L
L H
Q Q
O O
1A VDD
1 14
1B 1C
2 13
2A 1Y
3 12
2B 3C
4 11
2C 3B
5 10
2Y 3A
6 9
3Y
7 8
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
C1 1 Vcc
14
A1 2 C4
13
Y1
3 A4
12
C2 Y4
4 11
A2
5 10 C3
Y2 6
9 A3
GND
7 Y3
8
TC74VHC04F (EL) (XM332A00)
CPU1: IC132
DSP: IC702
JK1: IC407, 408
HD74LV04AFPEL (IS000400)
SUB: IC907
HD74LVU04AFPEL (XY102A00)
SUB: IC706
SN74HCU04NSR (XW842A00)
JK1: IC001
HD74LS06FPEL (XH610A00)
FD1: IC130-132
FD2: IC120, 121
Hex Inverter
1
1A 14 VDD
2 13
1Y
6A
3
12
2A 6Y
4
2Y 11
5A
5
10
3A 5Y
6
9
3Y
4A
Vss 7 8
4Y
SN74LV138ANSR (IS013810)
SUB: IC900
TC74HC138AFEL (XW762A00)
SUB: IC906, 910
TC74VHC138F (XT015A00)
JK1: IC402
JK2 (1/2): IC907
3 to 8 Demultiplexer
A 1 16 Vcc
A
Select
2
B Y0 15
B YO
3 14
C Y1
C Y1
4
G2A G2A Y2 13 Y2
Enable
5
G2B Y3 12
G2B Y3
6 11
G1 Y4
G1 Y4
Output
7
Y7 10 Y5
Y7 Y5
Y6
8
GND 9 Y6
Output