Port Allocations - Icom IC-V80E Service Manual Addendum

4-5 PORT ALLOCATIONS

• CPU (IC8)
LINE
Pin No.
NAME
MIC mute switching.
1 MMUT
L=MIC mute.
DTMF/1750 Hz tones and beep
3 TONE
sounds.
4 CTCOUT CTCSS/DTCS signals.
CPU reset signal.
10 RESET
H=The CPU is reset.
CPU clock shift contol.
15 CSHIFT H= While the oscillation frequency
is shifted.
DTCS fi lter switching.
17 DUSE
H=while the DTCS is in use.
PLL unlock detect.
18 UNLK H= W h i l e t h e P L L c i r c u i t i s
unlocked.
19 NOIS Noise signal.
22 POWER [POWER] key input.
External PTT input.
23 PTT
H=An external PTT is pushed.
VCO oscillation frequency shift
24 SHIFT control.
L=While receiving.
Power supply line for the VCO
25 PSVCO switching.
H=While the VCO is activated.
P o w e r s u p p l y l i n e " P S 5 "
switching.
26 PS5C
L= While the transceiver is in the
power save mode.
Power supply line "R5" switching.
27 R5C
L= While receiving.
Power supply line "T5" switching.
28 T5C
L=While transmitting.
Transmitting control.
29 TXC
L=TX mute.
Po w e r s u p p l y l i n e " S W 5 V "
switching.
30 PCON
H= While transceiver's power is
ON.
Discriminator dumping resister
switching.
62 NWC
H= While receiving in the wide
mode.
Internal PTT input.
63 INTPTT
L=[PTT] is pushed.
64 ITNMIC Internal microphone control.
Microphone gain control.
65 MIC2
H=MIC gain "L."
Microphone gain control.
66 MIC1
H=MIC gain "M."
LCD backlight control.
67 LEDC
H=Backlight ON.
68 DICK
CONTROL DIAL [VOL] inputs.
69 DIUD
71–74 KS0–KS3 Keypad scanning signal outputs.
75–77 KR0–KR3 Keypad inputs.
DESCRIPTION I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
LINE
Pin No.
NAME
80 VOX
81 VIN
83 TEMP
84 SD
85 CTCIN
I
86 WXALT
87 DASTB
88 PLLSTB
89 DATA
90 CK
94 ESCK
I
95 ESDA
I
98 SPMUTE
I
99 AFON
I
100 RMUT
• D/A CONVERTER (IC10)
Pin LINE
No. NAME
23 T1 Tuned BPF (D9) tuning voltage.
24 T2 Tuned BPF (D11) tuning voltage.
• While receiving:
7 T3
• While transmitting:
8 FC Reference frequency adjust voltage.
10 DET
Squelch threshold level adjustment.
11 SQL
12 DTC
DTCS deviation adjustment.
13 MODIN
18 MODIN
FM deviation adjustment.
19 DEV
20 VOLOUT
Audio output power adjustment.
21 VOLIN
I
I
I
4 - 3
DESCRIPTION
Microphone voice input detect.
Remaining battery voltage.
The temperature sensing voltage.
RSSI from the IF demodulator IC
(IC2, pin 13).
CTCSS/DTCS signals.
Weather alert detect.
D/A converter strobe.
PLL strobe.
Common serial data.
Common serial clock.
Clock to the EEPROM.
Serial data to/from the EEPROM. I/O
Speaker output control.
H=Speaker mute.
AF power AMP control.
L= T h e A F p o w e r A M P i s
deactivated.
RX AF line mute switching.
L=AF mute.
DESCRIPTION
BPF tuning voltage.
TX power control reference voltage.
I/O
I
I
I
I
I
I
O
O
O
O
O
O
O
O
I/O
O
O
O
O
I
O
O
I
I
O
O
I