Panasonic SL-SV550GT, Service Manual

Page: 32 / 63

Pin
No.
Terminal
Name
I/O Function
31 DDON O Power supply for varicap ON
output
32 TMUTE O Mute ON signal output
33 NC - Not used, open
34 TUNED I Tuned condition signal input
35
INT I Serial communication starting
signal input
36 SELECT1 I Area select signal input
37 GND4 - GND
38 OSC IN I FM/AM OSC signal input
39
V
DD
I Power supply terminal
40 DO O A phase comparator signal
output
41 VREG - Not used, connected to GND via
capacitor
42 BUSY O Busy signal output for IC301/
data signal output for IC1500
43 TDATA I Serial communication data
signal input
44 SO O Serial communication data
signal output
45 TCLK O Serial communication clock
signal output
46 6KEY I Remote control signal input
47 KEY1 I Operation key signal input
48 KEY2 I Operation key signal input
49 EMPTY I Battery remaining detect signal
input
50 AM L O FM/AM select signal output
51 VR
SCK2
O Clock signal output for IC1500
52 ACDET I Power failure detect signal input
53 START O Power ON signal output
54 RESET I Reset signal input
55 XOUT O Oscillator connected terminal (F
=75 kHz)
56 XIN I
57 GND5 - GND
58 VDB - Connected to GND via capacitor
59 C1 - Connected to C2 via capacitor
60 C2 - Connected to C1 via capacitor
61
V
EE
- Connected to GND via capacitor
62 C3 - Not used, open
63 C4 - Not used, open
64 VLCD - Connected to GND
30