Ic Block Diagram - Yamaha DG80-112 Service Manual

DG80-112

IC BLOCK DIAGRAM

TCHCU04AF-TP1(XD660A00)
Hex Inverter
DM : IC 101
1
14
1A
2 13
1Y
3
12
2A
4
11
2Y
5
10
3A
6
9
3Y
7 8
Vss
TC74HC157AF-TP1(XH603A00)
Quad 2 to 1 Multiplexer
DM : IC 18
1
16
SELECT
2 15
1A 1A G
3
14
1B 1B 4A
4
13
1Y 1Y 4B
5
12
2A 2A 4Y
6
11
2B 2B 3A
7 10
2Y 2Y 3B
8
9
GND
SN74HC244NSR(XD233A00)
Octal 3-State Bus Buffer
DM : IC 35, 36
1 20
1G
2 19
1A1
3 18
2Y4
1A2 4 17
5 16
2Y3
1A3 6 15
7 14
2Y2
8 13
1A4
9 12
2Y1
(GND) Vss 10 11
12
SN74HC08NSR(XD831A00)
Quad 2 Input AND
DM : IC 33
1A
VDD
1B
6A
1Y
6Y
2A
5A
2B
5Y
2Y
4A
VSS
4Y
TC74HC164AF(XQ967A00)
8-Bit Shift Register
DM : IC 110
A
Vcc
SIRIAL
INPUT
B
STROBE
QA
4A
QB
4B
OUTPUTS
QC
4Y
QD
3A
3B GND
3Y
SN74HC374ANSR(XQ042A00)
Octal 3-State D-Type Flip-Flop
DM : IC 21, 27
DN : IC 202 – 205
OUTPUT
VDD (Vcc)
CONTROL
2G 1Q
1Y1 1D
2A4 2D
1Y2 2Q
2A3 3Q
1Y3 3D
2A2 4D
1Y4 4Q
2A1 GND
1 14 VDD
2 13 4B
3 12 4A
4 11 4Y
5 10 3B
6 9 3A
7 8 3Y
1 14 VCC
A
2 B QH 13 QH
3 QA QG 12 QG
OUTPUTS
4 QB QF 11 QF
5 QC QE 10 QE
6 QD CLEAR 9 CLEAR
CK
A
7 8 CLOCK
1 20 Vcc
2 19 8Q
Q Q
OE OE
D CK CK D
3 18 8D
4 D CK CK D 17 7D
OE OE
Q Q
5 16 7Q
6 Q Q 15 6Q
OE OE
D CK CK D
7 14 6D
8 13 5D
D CK CK D
OE OE
Q Q
9 12 5Q
10 11 CLOCK
TC74VHC32F(XN963A00)
Quad 2 Input OR
DM : IC 28, 29
1A 1 14 Vcc
1B 2 13 4B
1Y 3 12 4A
2A 4 11 4Y
2B 5 10 3B
2Y 6 9 3A
GND 7 8 3Y
TC74HC175AF -TP1(XD658A00)
Quad D-Type Flip-Flop
DM : IC 117
1
16
CL VDD
2 15
1Q Q CL CL Q 4Q
CK CK
Q D D Q
3
14
1Q 4Q
4
13
1D 4D
5
12
2D 3D
6
11
Q D D Q
2Q 3Q
CK CK
Q CL CL Q
7 10
2Q 3Q
8
9
Vss CK
TC74HC4040F(XR684A00)
12-Stage Binary Ripple Counter
DM : IC 102
1 16
Q12 Q12 VDD
2
15
Q6 Q6 Q11 Q11
3 14
Q5 Q5 Q10 Q10
4
13
Q7 Q7 Q8 Q8
5
12
Q4 Q4 Q9 Q9
6 11
Q3 Q3 CL CLR
7
10
Q2 Q2 CK Input Pulses (
8
9
Vss Q1 Q1
)