Ic Block Diagram - Yamaha DM2000 Service Manual

IC BLOCK DIAGRAM

DM2000
TC74VHC00F (XT229A00)
CPU: IC133
DSP: IC058 ,704
MM74HC00SJX (XW105A00)
FD1: IC138
FD2: IC127
HD74LV00AFPEL (IS000000)
SUB: IC113
Quad 2 Input NAND
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
TC74VHC11F (EL) (XT812A00)
DSP: IC429-432
Triple 3 Input AND
1A VDD
1 14
1B 1C
2 13
2A 1Y
3 12
2B 3C
4 11
2C 3B
5 10
2Y 3A
6 9
VSS 3Y
7 8
TC74VHC32F (EL) (XY537A00)
CPU: IC136, 141
DSP: IC955
DS: IC001, 006
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
TC74VHC02F (XT230A00)
JK1: IC353
Quad 2 Input NOR
1Y VDD
1 14
1A 4Y
2 13
1B 4A
3 12
2Y 4B
4 11
2A 3Y
5 10
2B 3A
6 9
Vss 3B
7 8
TC74VHC14F-EL (XW876A00)
DSP: IC057, 073
JK1: IC459
JK2: IC701
Hex Inverter
1A 1
14 VDD
2 13
1Y
6A
3 12
2A 6Y
4
2Y 11
5A
5
10
3A 5Y
6
9
3Y
4A
7
GND 8
4Y
TC74VHC74F-EL (XW875A00)
DSP: IC128
JK1: IC055
Dual D-Type Flip-Flop
1
1CLR 14
VCC
2
D 13
1D 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 Q
L H X X H L
H L X X L H
L L X X H H
H H f H H L
H H f L L H
H H L X Q Q
O
TC74VHC04F (EL) (XM332A00)
CPU: IC132
DSP: IC702
JK1: IC409, 410
DS: IC005
HD74LV04AFPEL (IS000400)
SUB: IC137
HD74LVU04AFPEL (XY102A00)
SUB: IC117
SN74HCU04NSR (XW842A00)
JK1: IC001, 352
HD74LS06FPEL (XH610A00)
FD1: IC130-132
FD2: IC120, 121
Hex Inverter
1
1A
2
1Y
3
2A
4
2Y
5
3A
6
3Y
Vss 7
TC74VHC125F (XW313A00)
DSP: IC705
JK1: IC351
HD74LV125AFPEL (IS012500)
SUB: IC112
Quad 3-State Bus Buffer
C1
1
A1 2
Y1
3
C2
4
A2
5
Y2
6
GND 7
O
DM2000
14 VDD
13
6A
12
6Y
11
5A
10
5Y
9
4A
8
4Y
14 Vcc
13 C4
A4
12
Y4
11
C3
10
9 A3
Y3
8
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