Port Allocations - Icom IC-FR3000 Service Manual

3-6 PORT ALLOCATIONS

3-6-1 EXPANDER IC (LOGIC UNIT; IC39)
Pin Port
number name
Outputs the control signal for "BASE"
4 BASL
LED on the FRONT unit.
Outputs
5 RMTL
"REMOTE" LED on the FRONT unit.
Outputs the control signal for "BUSY"
6 BUSYL
LED on the FRONT unit.
Outputs the control signal for "TX"
7 TXL
LED on the FRONT unit.
Outputs the control signal for the D5V
12 D5C
on the FRONT unit.
Outputs the control signal for "P" LED
13 PROGL
on the FRONT unit.
Outputs the control signal for "DC"
14 DCL
LED on the FRONT unit.
3-6-2 EXPANDER IC (LOGIC UNIT; IC40)
Pin Port
number name
Outputs the speaker mute signal for
4
AFMUTE1
the received AF.
Outputs the speaker mute signal for
5 AFMUTE2 the received 2/5TONE and DTMF
signals.
Outputs the MIC mute signal for the
6
MICMUTE1
hand microphone.
Outputs the MIC mute signal for the
7 MICMUTE2
REMOTE connector.
Outputs the pulse control signal for
11 TELBMR
the telephone dialer IC
Outputs the MOD mute signal for
12
TELMUTE2
AF signal from the telephone line.
Outputs the telephone mute signal for
13 TELMUTE1
the received AF signal.
Outputs the MIC mute signal for the
14 MICMUTE3
ACC connector.
Description
the control signal for
Description
3-6-3 EXPANDER IC (LOGIC UNIT; IC41)
Pin Port
number name
5 R/BSW
6 W/NS
7 R9C
12 M9C
13 OPT1
14 OPT3
3-6-4 D/A CONVERTER IC (LOGIC UNIT; IC25)
Pin Port
number name
6 DA2STB
7 SCK
8 SDTO
9 AFFTTI
10 AFATTO
14 RVCON
15 TUNE
3 - 6
Description
Outputs the switch control signal for
the received AF signal to the micro-
phone amplifier.
Outputs the control signal for nar-
row/wide bands.
Outputs the control signal for the +9V
regulator on the RX unit.
Outputs the control signal for the M9V
regulator on the Rx unit and TX unit.
Output the detection signals for the
optional boards installed or not.
Description
Input port for the strobe signal.
Input port for the clock signal.
Outputs the serial data to the CPU
(LOGIC unit; IC33).
Input port for the received AF signal.
Outputs the adjusted AF signal for the
repeater output.
Outputs the adjustment signal for the
PLL reference frequency on the RX
unit.
Outputs the BPF tuning signal to the
RX unit.