Yamaha DG100-212, Service Manual

Page: 12 / 42

DG100-212
12
IC BLOCK DIAGRAM
Q
D CK
OE
Q
D CK
OE
Q
D CK
OE
Q
D CK
OE
OUTPUT
CONTROL
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
TCHCU04AF-TP1(XD660A00)
Hex Inverter SN74HC08NSR (XD831A00)
Quad 2 Input AND
1
2
3
1A
1Y
4 2A
5 2B
6 2Y
7 VSS
1B
14
13
12
VDD
4A
11 4Y
10 3B
9 3A
8 3Y
4B
1
2
3
A
QA QA
4 QB QB
5 QC QC
6 QD QD
7 GND
B B
14
13
12
VCC
QG QG
11 QF QF
10 QE QE
9 CLEAR CLEAR
8 CLOCK
QH
CK
QH
1
2
3
1A
1Y
4 2A
5 2B
6 2Y
7 GND
1B
14
13
12
Vcc
4A
11 4Y
10 3B
9 3A
8 3Y
4B
TC74VHC32F (XN963A00)
Quad 2 Input OR
SN74HC244NSR (XD233A00)
Octal 3-State Bus Buffer
TC74HC157AF-TP1
(
XH603A00
)
Quad 2 to 1 Multiplexer
TC74HC175AF -TP1(XD658A00)
Quad D-Type Flip-Flop
TC74HC4040F (XR684A00)
12-Stage Binary Ripple Counter
TC74HC164AF (XQ967A00)
8-Bit Shift Register
SN74HC374ANSR
(
XQ042A00
)
Octal 3-State D-Type Flip-Flop
Vcc
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLOCK
Q
D CK
OE
Q
D CK
OE
CK
Q
D CK
OE
Q
D CK
OE
1G
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
VDD (Vcc)
2G
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1 (GND) Vss
Q CL
Q D
CK
1
2
3
4
5
6
7
1A
1Y
2A
2Y
3A
3Y
Vss
14
13
12
11
10
9
8
VDD
6A
6Y
5A
5Y
4A
4Y
Q CL
Q D
CK
Q CL
Q D
CK
Q CL
Q D
CK
1
2
3
4
5
6
7
CL
1Q
1Q
1D
2D
2Q
2Q
16
15
14
13
12
11
10
VDD
4Q
4Q
4D
3D
3Q
3Q
8
Vss
9
CK
OUTPUTS
OUTPUTS
SIRIAL
INPUT
A
A
1
2
3
4
5
6
7
SELECT
1A 1A
1B 1B
1Y 1Y
2A 2A
2B 2B
2Y 2Y
16
15
14
13
12
11
10
Vcc
STROBE G
4A
S3
Y
4A
4B 4B
4Y 4Y
3A 3A
3B 3B
8
GND
9
3Y
1
2
3
4
5
6
7
Q12 Q12
Q6 Q6
Q5 Q5
Q7 Q7
Q4 Q4
Q3 Q3
Q2 Q2
16
15
14
13
12
11
10
VDD
Q11 Q11
Q10 Q10
Q8 Q8
Q9 Q9
CLR CL
Input Pulses ( )
8
Vss
9
Q1 Q1