Sony HCD-C20 / HCD-G202 / MHC-C20 / MHC-G202 Service Manual ▷ View online
— 88 —
— 87 —
57
58
59
60
61
62
63
64
65
66
67
68
69 to 80
VDD
X1
X2
XLAT
FM ST IN
DI 2
DI 1
DO
CLK
CE
STB
RESET
S00 to S11
—
—
—
O
I
I
I
O
O
O
O
I
O
I/O
Pin Name
Function
Pin No.
+5V power supply
System clock (4.19 MHz)
Latch signal output to CXD2508Q
FM stereo detection signal input
Optical pick-up up detection signal input
Serial data input
Serial data output
Serial clock output
Chip enable output
STB signal output
Reset input “L” : reset
Segment output to LCD
5-16. IC PIN FUNCTION
• IC601 System Controller, LCD driver (µPD753017AGC)
1 to 12
13
14
15
16
17
18
19
20
21 to 24
25
26 to 28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
Segment output to LCD.
Key control signal output A “H” : active
Key control signal output B “H” : active
Key control signal output C “H” : active
Turned detection signal from tuner
Latch output to LED driver “H” : active (Not used)
REC/PB select signal output to tape selector
Tuner mute control signal output
Not used
LCD drive signal output
Not used
Key input 0 “ H” : active
Key input 1 “ H” : active
Key input 2 “ H” : active
Key input 3 “ H” : active
Ground
Key input 4 “ H”: active
Key input 5 “ H” : active (Not used)
CD SYNCHRO REC signal input “L” : active
FOK signal input from CXD2508Q
COUNT signal input from CXD2508Q
SQCK/CLOK/MODE SW signal input/output
Serial data output
Serial data input from CXD2508Q
Remote control signal input “L” : active
SCOR signal input from CXD2508Q
SENS signal input from CXD2508Q
Optical pick-up down detection signal input “L” : down
Detection signal input of turn table position
Detection signal input of turn table operation
Disc tray open detection signal input
Disc tray close detection signal input
Volume encoder signal input and volume motor control signal output (Not used)
System mute control signal output “H” : ON
Power ON/OFF control signal output “H” : OFF, “L” : ON
+5V power supply
Power down detect input “L” : active
Not used
I/O
Function
Pin No.
Pin Name
S12 to S23
KO A
KO B
KO C
TUNED
LATCH OUT
TAPE REC OUT
TU MUTE OUT
—
COM 1 to COM 3
BIAS
VLC 0 to VLC 2
KI 0
KI 1
KI 2
KI 3
VSS
KI 4
KI 5
SYC. REC IN
FOK
COUNT
SQCK/MODE SW IN
DATA
SQSO
REM. IN
SCOR
SENS
GFS
DISC COUNT SW
TURN TABLE SW
TRAY OPEN SW
TRAY CLOSE SW
VR UP
VR DOWN
SYSTEM MUTE OUT
POWER OUT
VDD
POWER DOWN IN
OPEN
O
O
O
O
I
O
O
O
—
O
O
O
I
I
I
I
—
I
I
I
I
I
I/O
O
I
I
I
I
I
I
I
I
I
I/O
I/O
O
O
—
I
—
• Abbreviation
LCD: Liquid Crystal Display
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