Panasonic SL-SV550GT, Service Manual

Page: 31 / 63

Pin
No.
Terminal
Name
I/O Function
65 PWMSEL - Connected to GND
66 SMCK O System clock signal output
67 DMUTE - Connected to GND
68 STAT O Status signal output terminal
69 NRST I Reset signal input terminal
70 SPPOL O Spindle motor drive signal
output terminal
71 PMCK O Clock signal output
72 DQSW/
/
NCLDCK
- Not used, open
73 SUBC - Not used, open
74 SBCK - Not used, open
75 NTEST I Test terminal (Connected to
power supply)
76 X2 O Crystal oscillator connected (F=
16.9 MHz)
77 X1 I
78
DV
SS
1
- GND
79
DV
DD
1
I Power supply terminal
80 EXT2 - Not used, open
14.4. IC1301(C2FBEB000002): / System Control/LCD Drive
Pin
No.
Terminal
Name
I/O Function
1
|
4
COM0
|
COM3
O LCD common signal output
5
|
22
S0
|
S17
O LCD segment signal output
23 RADIO
/ KEY
I Radio key signal input
24 CDPLAY
/ KEY
I Play key signal input
25 SELECT2 I Not used, connected to GND via
resistor
26 TCS O EEPROM chip select signal
output
27
V
DD
I Power supply terminal
28 BUZ O Beep control signal output
29 CITY O City/normal select signal output
30 MONO O Forced monaural signal output
29