Read Sony ICF-CD543RM Service Manual online
33
ICF-CD543RM
Pin No.
Pin Name
I/O
Description
72
VDD0
—
Power supply terminal (+3.3V)
73
VSS0
—
Ground terminal
74
X1
I
Main system clock input terminal (4.19 MHz)
75
X2
O
Main system clock output terminal (4.19 MHz)
76
RESET
I
System reset signal input “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
77
CD ON
O
Power on/off control signal output for the CD +3.3V power supply “L”: CD power on
78
RADIO ON
O
Power on/off control signal output for the radio +3.3V power supply “L”: radio power on
79
A MUTE
O
Audio line muting on/off control signal output “L”: muting on
80
KITCHEN LED
O
LED drive signal output of the TIMER “L”: LED on
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