Motorola MVME712-12 Prack, Prpe, Prbsy, Inprime, Prsel, GND Ground Prfault, GND Ground TXD3, CTS3

Interconnect Signals

Table 3-4. Connector J2 Interconnect Signals (LCP2 Adapter) (Continued)

Pin	Signal	Signal Name and Description
Number	Mnemonic
20	PRACK*	DATA ACKNOWLEDGE (Printer) - a low level
		input pulse indicating that the next character
		may be sent.
21	PRPE	PAPER EMPTY (Printer) - out of paper.
22	PRBSY	BUSY (Printer) - an input signal indicating that
		the printer cannot receive data.
23	INPRIME*	INPUT PRIME (Printer) - an output signal that
		clears the printer buffer and initializes the logic.
24	PRSEL	SELECTED (Printer) - an input signal indicating
		that the printer is selected.
25	GND	GROUND
26	PRFAULT*	FAULT (Printer) - an input signal that indicates
		a printer fault condition.
27	GND	GROUND
28	TXD3	TRANSMIT DATA (serial port 3) - data to be
		transmitted is furnished on this line to the
		modem from the terminal.
29	GND	GROUND
30	RXD3	RECEIVE DATA (serial port 3) - data that is
		demodulated from the receive line is presented
		to the terminal by the modem.
31	CTS3	CLEAR TO SEND (serial port 3) - CTS is a
		function supplied to the terminal by the modem,
		and indicates that it is permissible to begin
		transmission of a message. When using a
		modem, CTS follows the off-to-on transition of
		RTS after a time delay.
32	RTS3	REQUEST TO SEND (serial port 3) - RTS is
		supplied by the terminal to the modem when it
		is required to transmit a message. With RTS off,
		the modem carrier remains off. When RTS is
		turned on, the modem immediately turns on the
		carrier.
33	DCD3	DATA CARRIER DETECT (serial port 3) - sent
		by the modem to the terminal to indicate that a
		valid carrier is being received.

3

MVME712A/D3 3-5