Casio CTK-650, Руководство по обслуживанию, Страница: 12 / 22

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IC LEAD IDENTIFICATION AND INTERNAL CIRCUIT
UPD6376CX (D/A converter)
TIMING GENERATOR
SHIFT REGISTER LATCH
MAIN DAC
SUB DAC
SUB DAC
MAIN DAC
LRCK
LRSEL/RSI
SI/LSI
CLK
4/8 fs SEL
D.GND
N.C.
D.VDD A.GND
A.VDD
R.OUT
R.REF
L.REF
L.OUT 11
10
9
6
8 7 12 5 4 3
13
14
15
16
1
2
TC74HC174AP (HEX D-TYPE FLIP FLOP WITH CLEAR )
CLEAR
CLOCK
Q0 Q1 Q2 Q3 Q4 Q5
D0 D1
D2 D3
D4
D5
VDD GND
5 7 10 12 15
14
13
11 4 3
R
D
CK Q
R
D
CK Q
R
D
CK Q
R
D
CK Q
R
D
CK Q
R
D
CK Q
1
9
16 8 2
6
TC74HC08AP (QUAD 2-INPUT AND GATE) TC74HC00AP (QUAD 2-INPUT NAND GATE)
1A 1
1B 2
1Y 3
2A 4
2B 5
2Y 6
GND 7
8 3Y
9 3A
10 3B
11 4Y
12 4A
13 4B
14 VCC
1A 1
1B 2
1Y 3
2A 4
2B 5
2Y 6
GND 7
8 3Y
9 3A
10 3B
11 4Y
12 4A
13 4B
14 VCC