Casio CTK-750, Service Manual

Page: 23 / 30

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IC LEAD IDENTIFICATION AND INTERNAL DIAGRAM
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
3
2
1 OUT
VDD
VSS
1 2
3
4 5
6
VCC
GND
NC
+
-
+
-
1 2 3 4
5
6 7 8
VCC
GND
1A 1
1Y 2
2A 3
2Y 4
3A 5
3Y 6
GND 7
8
9
10
11
5Y
12
6A 13
6Y
14 VCC
4A
4Y
5A
UPD6376CX
TC74HC04AP
M5218APR PC900V
S8053ANO
1 2 3