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Sanyo MCD-S935F Service Manual page 11

Cd portable radio cassette recorder
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IC BLOCK DIAGRAM & DESCRIPTION
IC070 LC723369557 (LCD Driver)
1
XIN
XOUT
80
FMIN
74
75
AMIN
SNS
72
SNSFF
VDD
73
VSS
76
V-DET
HCTR
70
LCTR
71
HOLD
69
TEST1
79
TEST2
2
PA0
18
17
PA1
BUS
DRIV.
PA2
16
PA3
15
PB0
14
LATCH
PB1
13
BUS
PB2
12
DRIV.
PB3
11
10
PC0
LATCH
9
PC1
BUS
8
PC2
DRIV.
PC3
7
PG0
6
SCK0/PG1
5
LATCH
BUS
4
SO0/PG2
DRIV.
SI0/PG3
3
DIVIDER
REFERENCE DIVIDER
1 / 16,1 / 17
PROGRAMMABLE DIVIDER
LATCH
1 / 2
UNIVERSAL
COUNTER
(20bits)
RAN
512 x 4bits
RAN
6K x 16bits
ADDRESS DECODER
PROGRAM COUNTER
SIO
STACK
ALU
SELECTER
PHASE
DETECTOR
UNLOCK
F/F
LCDA/B
4
SEG
4
PLA
LCPA/B
ADDRESS
DECODER
LATCH
BUS
DRIV.
BUS
DRIVER
LATCH
BUS
INSTRUC-
DRIV.
TION
DECODER
LATCH
BUS
DRIV.
BEEP
LATCH
BUS
DRIV.
JUDGE
LATCH
BUS
DRIV.
DAC
LATCH
BUS
DRIV.
ADC
MPX
LATCH
BUS
DRIV.
- 10 -
77 E01
78
E02
58
COM1
COMMON
57
COM2
DRIVER
56
COM3
Vdd1
60
59
Vdd2
55
S1
54
S2
53
S3
52
S4
51
S5
50
S6
49
S7
48
S8
7
S9
47
LCD
46
S10
LATCH
96
PORT
45
S11
DRIVER
44
S12
43
S13
S14
42
41
S15
40
S16
39
S17/PE0
38
S18/PE1/SCK2
S19/PE2/SO2
37
36
S20/PE3/SI2
S21/PF0
35
34
S22/PF1/SCK1
33
S23/PF2/SO1
32
S24/PF3/SI1
30
S25/PM0
29
S26/PM1
28
S27/PM2
27
S28/PM3
26
S29/PN0/BEEP
MPX
25
S30/PN1
24
S31/PN2
23
S32/PN3
MPX
61
PJ3/DAC3
62
PJ2/DAC2
MPX
63
PJ1/DAC1
MPX
64
PJ0/DAC0
MPX
19
PK3
20
PK2
21
PK1/INT1
22
PK0/INT0
INTERRUPT
65
PH3/ADI3
66
PH2/ADI2
67
PH1/ADI1
68
PH0/ADI0

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