Port Allocations - Icom IC-F1000 Service Manual

4-5 PORT ALLOCATIONS

• CPU (IC9)
LINE
PIN
NO.
NAME
Beep audio (Square waves) to the AF
1 BEEP
AMP (IC1).
2 SENC 2/5 tone and DTMF encoding output.
RX AF mute switch control.
17 RMUT
L=During the squelch is closed.
Transmission mute.
18 TMUT
L=TX inhibit.
MIC mute switch control.
19 MMUT
L=MIC mute.
20, MGC1*,
MIC gain control.
MGC0*
21
22 CL0
Cloning data.
23 CLI
CPU clock frequency shift control.
24 CSFT H= While the clock frequency is
shifted.
Automatic TX control in the VOX
25 AUTX mode.
H=Microphone input is detected.
RX mode (narrow/wide) switching.
26 NWC L= While receiving in the narrow
mode.
AF power AMP control.
27 AFON
H=AF power AMP (IC55) is activated.
28 SCK Common serial clock.
29 S0 Common serial data.
34 ESCL EEPROM clock.
35 ESDA EEPROM data.
D/A converter strobe.
36 DAST
H=Load enable.
PLL IC strobe.
37 PLST
H=Load enable.
Receive circuit power supply line
"R5" control.
38 R5C
H= W h i l e t h e r e c e i v e c i r c u i t i s
activated.
Transmit circuit power supply line
39 T5C "T5V" control.
L=While transmitting.
TX/RX common circuit power supply
40 S5C line "S5V" control.
L=While in the power save mode.
TX LED indicator control.
46 TLED
L=While transmitting.
RX LED Indicator control.
47 RLED L= While receiving a signal or the
squelch is open.
LCD backlight control.
48 LIGT
H=Lights.
56,
CENC2,
CTCSS/DTCS encoding output.
57 CENC1
AF LPF switching.
58 DUSE
H=While sending the DTCS signal.
59–
CBI0–
[ROTARY SELECTOR] input.
CBI3
62
Noise level detect.
70 NOIS
H=While receiving a signal.
PLL unlock detect.
71 UNLK
L=Unlocked.
[P0], [1], [2] and [3] input.
72 KR0
L=Pushed.
DESCRIPTION I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I/O
O
O
O
O
O
O
O
O
O
O
O
LINE
PIN
NO.
NAME
73 KR1
74 KR2
81 KR3
82 KS0
83 KS1
84 KS2
I
85 KS3
86 SDEC
87 CDEC
88 EPTT
89 IPTT
90 TEMP
91 BATV
92 KRA
93 SDEC2
95 AFVI
96 RSSI
97 LVIN
98 MDET
99 VOXV
*: MIC
sensitivity
Line name
Line state
I
I
I
4-4
DESCRIPTION
[P1], [4], [5] and [6] input.
L=Pushed.
[P2], [7], [8] and [9] input.
L=Pushed.
[P3], [*], [0] and [#] input.
L=Pushed.
[P0], [P1], [P2] and [P3] input.
L=Pushed.
[1], [4], [7] and [*] input.
L=Pushed.
[2], [5], [8] and [0] input.
L=Pushed.
[3], [6], [9] and [#] input.
L=Pushed.
Decoded 2/5 tone and DTMF signals.
Tone signal (CTCSS/DTCS) decoding
input.
External PTT input.
H= An external PTT is pushed.
[PTT] input.
L= Pushed.
Transceiver temperature sensing
voltage.
Battery voltage.
[S1], [S2] and [EMER] input.
L= Pushed.
Decoded 2/5 tone and DTMF signals.
[VOLUME CONTROL] input.
Input port for RSSI signal from the IF
IC (IC16, pin16).
Lock voltage input.
Exter nal microphone connection
detect.
Microphone input sensing voltage.
setting.
MGC0 MGC1
H H
L H
H L
L L
I/O
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
MIC sensitivity
4 (Maximum)
3
2
1 (Minimum)