Motorola V.3600 manual Pin Signal Descriptions

Installation

Table 2-1. Pin Signal Descriptions

	EIA-	CCITT
Pin	232D	V.24	Signal	Description
1		101	Shield	No connection
2	BA	103	Transmit-	Serial digital data (to be modulated)
			ted Data	from a data terminal or other digital
				data source: Synchronous data must be
				accompanied by the modem transmit
				clock (pin 15) or by an external data
				rate clock (pin 24). Data transitions
				should occur on positive-going clock
				transitions; asynchronous data does not
				require a transmit clock.
3	BB	104	Received	Serial digital data output to the DTE
			Data	interface: Sync data is accompanied by
				an internal data rate (receive) clock
				(pin 17) that has positive-going
				transitions on the data transition. Async
				data does not require a receive clock.
4	CA	105	Request to	A positive level to the modem when
			Send	data transmission is desired
5	CB	106	Clear to	A positive level from the modem in
			Send	response to Request to Send and when
				the modem is ready to transmit. *
6	CC	107	Data Set	A positive level from the modem when
			Ready	power is on and ready to operate: In
				dial-up operation, the modem must be
				off hook to give a high DSR signal.*
7	AB	102	Signal	Signal or common signal and dc power
			Ground	ground. **
8	CF	109	Received	A positive level from the modem
			Line	indicating the presence of a received
			Signal	signal (carrier detect). *
			Detector
9	--		+12 Volts	+12 voltage reference
10	--		-12 Volts	-12 voltage reference

* Modem options may force these signals on or cause them to be ignored. ** Refer to Appendix C, Hardware Options.

† This function can be disabled or its logic sense reversed by hardware straps.

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