Cpu (M: Ic20) Port Allocation - Icom IC-FR6100 Service Manual

5-4 CPU (M: IC20) PORT ALLOCATION

Pin
LINE NAME
No.
140–144 D0–D4 DSP data bus line.
1–11 D5–D15 DSP data bus line.
15–28 A1–A14 DSP data bus line.
29 HRW DSP data line.
32 FANS Cooling fan (CH: MF1) rotation detect.
33 TLED TX indicator LED control signal.
34 LEDR RX indicator LED control signal.
35 PLSCK PLL (M: IC4) serial clock.
36 PLSSO PLL (M:IC4) serial data.
41 PWON Power line "VCC" control signal.
42 AFON2 AF power AMP. (M: IC28) control signal.
43 AFON AF output select signal.
44 ESCL Serial clock to the EEPROM (M: IC21).
45 ESDA Serial data to the EEPROM (M: IC21).
46 TXC TX power line "T8V" control signal.
47 RXC RX power line "R8V" control signal.
48 RPLST RX PLL (M: IC4) strobe.
49 TPLST TX PLL (M: IC3) strobe.
50 RUNLK RX PLL (M: IC4) unlock signal.
51 TUNLK TX PLL (M: IC3) unlock signal.
52 XCTS Serial data from the RS-232 line driver (M: IC26).
53 XRTS Serial data to the RS-232 line driver (M: IC26).
55 EXDA External D/A port.
56 BEEP Beep sounds (square waves).
57–59 OPV3–OPV1 Optional unit detect.
60 MMUT MIC mute signal to the installed optional unit.
61 HANG Microphone hang-up detect.
62 PTT [PTT] key input. (pull up)
63 RMUT RX mute signal to the installed optional unit.
64 EXAD External A/D port.
65 TEMP Temperature detect.
68 RLVIN RX PLL lock voltage.
69 BATV Voltage monitor (divided voltage of "VCC").
70 TLVIN TX PLL lock voltage.
71 RSSI RSSI signal from the IF IC (M: 5).
74 XTXD External data to the RS-232 driver (M: IC26).
75 XRXD External data from the RS-232 driver (M: IC26).
76 TMUT TX mute signal.
77 HINT DSP IC control signal.
78 INT1 DSP IC control signal.
79 HRDY DSP IC control signal.
81 HDS1 DSP IC control signal.
82 HDS2 DSP IC control signal.
100 RES CPU reset signal from the reset IC (F: IC501).
101–108 EXIO1–EXIO8 External data bus line.
112 POSW [PWR] key input. (pull-up)
113 NOIS Noise detect.
114 CSFT Clock frequency shift signal.
119 SSO Serial data to the seri-para converter (M: IC31).
120 SCK Clock signal to the seri-para converter (M: IC31).
121 EXIO9 External data bus line.
122 DSDA Serial data to the DAC (M: IC17).
DESCRIPTION
5 - 3
IN/
CONDITION
OUT
I/O –
I/O –
I/O –
I/O –
I "H"=While the cooling fan is rotating.
O "H"=TX
O "H"=Squelch open.
O –
O –
O "H"=Power ON.
O "H"=AF power AMP ON.
"H= A F s i g n a l s a r e o u t p u t f r o m t h e
O
[ACCESSORY CONNECTOR].
O –
O –
O "H"=TX
O "H"=RX
O –
O –
I "L"=Unlocked
I "L"=Unlocked
I –
O –
O –
O –
I –
O "H"=MIC mute
I "L"=Hang-up
I –
O "H"=RX mute
I –
I –
I –
I –
I –
I –
O –
I –
O "H"=TX mute
O –
O –
O –
O –
O –
O –
I/O +5 V pull-up
I –
I "H"=RX signal is absent (squelch close).
O –
O –
O –
I/O +5 V pull-up
O –