Read Sony ICF-C763 / ICF-C763L Service Manual online
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7
ICF-C763/C763L
Pin No.
Pin Name
I/O
Description
1, 2
BACK LIGHT1, 2
O
Back light LED
3, 4
ILLUMINATION1, 2
O
Illumination LED
5 to 9
KS0 to 4
O
Key source
10 to 13
KR0 to 3
I
Key return (Pull-down resistor: ON setting)
14
ILLUMINATION 2
O
Illumination LED
15
MUTE
O
Mute output
16, 17
BAND1, 2
O
Band output
18
GND
–
Ground
19
EO
O
Output for charge pump for PLL frequency synthesizer
20
VCOL
I
VCO input on AM band
21
VCOH
I
VCO input on FM band
22
REG0
–
Voltage regulator for PLL output
23
VDD
–
Power supply (+3V)
24
XOUT
O
Connected to crystal oscillator for system clock
(75kHz)
25
XIN
I
Connected to crystal oscillator for system clock
(75kHz)
26
REG1
–
Voltage regulator for oscillation circuit output
27
REGLCD0
–
LCD drive power supply terminal
28, 29
CAPLCD0, 1
–
Connected to the capacitor for doubler circuit
30
REGLCD1
–
LCD drive power supply terminal
31 to 34
COM0 to 3
O
LCD common output
35 to 49
LCD0to 14
O
LCD segment output
50
CE
I
Chip enable signal input
51
INT
I
Door open/close detect input
52
BEEP
O
BEEP output
53
MELODY ST
O
Melody IC starts playing
54
MELODY CK
O
Melody IC serial clock
55
MELODY DATA
O
Melody IC serial data
56
INTIAL
O
Initial output
3-2. IC Pin Function Descriptions
• IC100 SYSTEM CONTROL (MPD17072GB-573-1A7)
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