Sony ICF-CD543RM Service Manual page 33

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