Icom IC-F14 Service Manual Addendum page 32

4-6-2 CPU (IC13)
Pin Port
number name
Input port for the transceiver's
1 TEMP internal temperature detecting
signal.
Input port for the detect signal for
2 BATV
connecting battery pack's voltage.
Input port for power reset signal.
7 RES
13 SENC0
Output single tone encoder
signal.
14 SENC1
O u t p u t s D T S C L P F c o n t r o l
16 DUSE
signal.
17 BUSY
Outputs AF power amplifier
18 AFON
control signal.
19 SENC2
Output single tone encoder
signal.
20 SENC3
21 CBI0
Input ports for ritary selectoir.
22 CBI1
23 CENC0
24 CENC1 Output CTCSS/DTCS signals.
25 CENC2
26 CBI2
Input ports for ritary selectoir.
27 CBI3
Outputs serial clock signal to the
28 SCK PLL IC (IC4, pin 9), D/A convertor
(IC6, pin 7), etc.
Outputs serial data to the PLL IC
29 SO (IC6, pin 8) and D/A convertor
(IC6, pin 8).
30 BEEP Outputs beep audio signals.
I/O port for data signals from/to
31 ESDA
the EEPROM (IC15, pin 5).
Outputs clock signal to the
32 ESCL
EEPROM (IC15, pin 6).
Input port for unlock signal from
33 UNLK
PLL IC.
Outputs strobe signals to the PLL
34 PLST
IC (IC4, pin 11).
Output/input port for wide/narrow
36 NWC
control signal.
• Outputs strobe signals to the
37 DAST
• Input port for the connecting
Outputs power save control
38 S5C
signal.
Outputs T5 regurator control
39 T5C signal.
Low: While transmitting
Outputs R5 regurator control
signal.
40 R5C
Low: While receivinging
Description
D/A convertor (IC8, pin 6).
battery type detect signal.
Pin Port
number name
42 RLED Outputs receiving LED control signal.
43 TLED
44 OPT3
45 OPT1
46 OPT2
47 PTT
48 SI
49 CLI
50 CLO Outputs the cloning data signal.
53 NOIS
54 CIRQ Input port for option unit detection.
55 CCS Outputs chip select signal.
56 TMUT Outputs transmit mute signal.
57 RMUT
58 MMUT Outputs MIC mute signal.
59 REMO Inputs key signal from remote mic.
60 CDEC
61 SDEC
62 KEY Inputs key input signal.
63 RSSI
64 LVIN Input port for the PLL lock voltage.
4 - 6
Description
Outputs transmitting LED control
signal.
I/O ports for option unit.
Input port for the PTT switch detection
signal.
Low : While the PTT switch is pushed.
Serial Bus inputport.
Input port for the cloning data signal.
Input port for the noise signal from the
FM IF IC (MAIN unit; IC1, pin 13).
Input port for AF mute signal from the
RX circuit.
Input port for CTCSS/DTCS signal
from the amplifier (IC5, pin 8).
Input port for single tone decode
signal from the LPF (IC5, pin 8).
Input port for the S-meter signal from
the FM IF IC (IC1, pin 12).