Icom IC-FR3000 Dtcsi, Busy, Mck, Mdt, Telstb, Hookc, Ring, Shift, Int, Txdto, Rxdto, TXDT1

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Pin	Port	Description
number	name
47	RVSWR	Input port for the RV SWR signal from
		the PA unit.
48	TEMP	Input port for the temperature signals
		of PA and REG units.
49	T/RLV	Input port for the VCO lock voltage to
		the TX and RX unit.
50	RSSI	Input port for the RSSI signal from the
		FM IF IC (RX unit; IC2).
51	25TI	Input port for the 2/5TONE signals.
52	DTCSI	Input port for the DTCS signal.
	TEL-	Input port for the busy signal from the
68		pulse tone dialer IC (LOGIC unit;
	BUSY
		IC47).
69	MCK	Outputs the serial clock signal for the
		EEPROM (LOGIC unit; IC37).
		I/O port for the serial data signal
70	MDT	from/to the EEPROM (LOGIC unit;
		IC37).
71	TELSTB	Outputs strobe signal for the pulse
		tone dialer IC (LOGIC unit; IC47).
72	HOOKC	Outputs the ON/OFF HOOK control
		signal for the telephone line.
73	RING	Input port for the ringer detecting sig-
		nal from the telephone line.
74	SHIFT	Outputs the control signal for the clock
		shift circuit.
75	INT	Input port for the power supply detec-
		tion signal.
76	TXDTO	Outputs the serial data signal to the
		ACC connector.
77	RXDTO	Input port for the serial data signal
		from the ACC connector.
78	DTSEL1	Outputs the control signal for the
		DTMF SW IC (LOGIC unit; IC50).
79	TXDT1	Outputs the clone data signal.
80	RXDT1	Input port for the clone data signal.
81	DTSEL2	Outputs the control signal for the
		DTMF SW IC (LOGIC unit; IC30).
		Input port for the TONE detecting sig-
82	DTSTD	nal from the DTMF decoder IC
		(LOGIC unit; IC31).
		Input port for the data decoding signal
85	DTMFD	from the DTMF decoder IC (LOGIC
		unit; IC31).
86	DTACK	Outputs the clock signal for the DTMF
		decoder IC (LOGIC unit; IC31).
87	ONHOOK	Input port for the detection signal of
		the ON-HOOK signal.
88	IOE	Outputs the control signal for the port
		expander IC (LOGIC unit; IC39–IC41).

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Pin	Port	Description
number	name
89	PE3STB	Outputs the strobe signal for the port
		expander IC (LOGIC unit; IC41).
90	PE2STB	Outputs the strobe signal for the port
		expander IC (LOGIC unit; IC40).
91	PE1STB	Outputs the strobe signal for the port
		expander IC (LOGIC unit; IC39).
95	D2STB	Outputs the strobe signal for the D/A
		converter IC (LOGIC unit; IC25).
96	D1STB	Outputs the strobe signal for the D/A
		converter IC (TX unit; IC5).
		Outputs the serial data signal for the
		PLL IC (RX unit; IC4, TX unit; IC2),
97	SDTO	dialer IC (LOGIC unit; IC47), port
		expander IC (LOGIC unit; IC39–IC41)
		and optional boards.
		Outputs the clock signal for the PLL IC
		(RX unit; IC4, TX unit; IC2), dialer IC
98	SCK	(LOGIC unit; IC47), port expander IC
		(LOGIC unit; IC39–IC41) and optional
		boards.
99	RUNLK	Input port for the unlock signal from
		the PLL IC (RX unit; IC4).
100	C/DSW	Outputs the control signal for the TX-
		TONE filter (LOGIC unit; IC4).

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