Read Sony ICF-SC1 / ICF-SC1PC Service Manual online
– 15 –
Pin No.
Pin name
I/O
Description
1
COMP-W
I
WFM S-curve voltage input (A/D input).
2
BATT
I
Low battery voltage detection input (A/D input).
3 – 7
KS0 – 4
O
Key matrix output.
8
AVDD
–
Power supply for A/D converter.
9
AVREF
–
Power supply for A/D reference.
10
AC-DET
I
External power supply detect terminal.
11
LED
O
LED drive. “H” : Lighting
12
VSS
–
Ground.
13
TEST
I
Test mode terminal. “H” : Test mode
14
LCD
I
“H” : Normal. (LCD display ON = H during PC operaion)
15
BEEP
O
Beep signal output.
16
SCAN
O
Scan signal output. “H” : Scan run
17
DUB
–
Not used (Open).
18
WFM
O
WFM mode select. “H” : WFM mode
19
D/A 0
O
D/A output bit 0 for minute step.
20
D/A 1
O
D/A output bit 1 for minute step.
21
STANDBY
O
Standby signal output. “H” : RS232C interface OFF
22
MUTE
O
Mute signal output. “H” : Mute ON
23 – 25
COM0 – 2
O
LCD common output.
26
COM3
–
Not used (Open).
27
BIAS
–
LCD bias terminal.
28 – 30
VLC0 – 2
–
LCD bias terminal.
31
VSS
–
Ground.
32 – 62
S0 – 30
O
LCD segment output.
63
–
Not used (Open).
64
AM
O
AM mode output. “H” : AM mode
65
NFM
O
NFM mode output. “H” : NFM mode
66
IF 1
O
IF selection output.
67
RF
O
RF selection output.
68
MAIN
O
Main power supply ON/OFF control.
69
FILTER
O
Serial latch output for filter selection.
70
PLL
O
Serial latch output for PLL selection.
71
ROM
O
Clock output for EEPROM.
72
DO
I
Serial data input from EEPROM.
73
DI
O
Serial data output to EEPROM.
74
CLK
O
Serial clock output.
75
RXD
I
RXD input from RS232C interface.
76
TXD
O
TXD output to RS232C interface.
77
CTS
O
CTS output to RS232C interface.
78
IC (GND)
–
Ground.
79
XM2
Main clock oscillator (4.194304MHz).
80
XM1
Main clock oscillator (4.194304MHz).
81
VDD
–
Power supply (+4.0V).
82
XS2
Sub clock oscillator (32.768kHz).
83
XS1
Sub clock oscillator (32.768kHz).
84
RESET
I
System reset terminal.
85
OFF-DET
I
Low power detection OFF input. “L” : OFF
SECTION 5
DIAGRAMS
5-1. EXPLANATION OF IC TERMINALS
IC604
µ
PD78064BGC (SYSTEM CONTROL)
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