Ampro Corporation PCI-104 Interface Board Connectors, Signal Pin # On Description Board

Appendix B I/O Interface Board

I/O Interface Board Connectors

Table B-2 lists the interface between Utility 1a (J4) and the other connectors/devices on the I/O Board.

Table B-2. Utility 1a Interface Pin/Signal Descriptions (J4)

J4	Signal	Pin # On-	Description
Pin #		board
1	DCD0*	J7-1	Data Carrier Detect 0 – Indicates external serial device is detecting a
	(Serial 1/		carrier signal (i.e., a communication channel is currently open). In
			direct connect environments, this is be driven by DTR0 as part of the
	COM1)
			DTR0/DSR0 handshake.
2	DSR0*	J7-6	Data Set Ready 0 – Indicates external serial device is powered,
			initialized, and ready. Used as hardware handshake with DTR0 for
			overall readiness to communicate.
3	RXD0	J7-2	Receive Data 0 Input – This receive data line is typically held at a logic
			1 (mark) when no data is being transmitted, and is held “Off” for a brief
			interval after an “On” to “Off” transition on the RTS0 line to allow the
			transmission to complete.
	RX0-		Receive Data 0 Negative – If in RS-485 mode, this pin is RX0-.
4	RTS0*	J7-7	Request To Send 0 – Indicates serial port is ready to transmit data. Used
			as hardware handshake with CTS0 for low level flow control.
	TX0+		Transmit Data 1 Positive – If in RS-485 mode, this pin is TX0+.
5	TXD0	J7-3	Transmit Data 0 Output – This line is typically held to a logic 1 when
			no data is being sent. A logic 0 (On) must be present on RTS0, CTS0,
			DSR0, and DTR0 before data can be transmitted on this line.
	TX0-		Transmit Data 0 Negative – If in RS-485 mode, this pin is TX0-.
6	CTS0*	J7-8	Clear To Send 0 – Indicates external serial device is ready to receive data.
			Used as hardware handshake with RTS0 for low level flow control.
	RX0+		Receive Data 0 Positive – If in RS-485 mode, this pin is RX0+.
7	DTR0*	J7-4	Data Terminal Ready 0 – Indicates port is powered, initialized, and
			ready. Used as hardware handshake with DSR0 for overall readiness.
8	RI0*	J7-9	Ring Indicator 0 – Indicates external serial device is detecting a ring
			condition. Used by software to initiate operations to answer and open
			the communications channel.
9	GND	J7-5	Digital Ground
10	PS_ON	SW1-3/	Power Supply On –
		-4
11	DCD1*	J7-10	Data Carrier Detect 1 – Indicates external serial device is detecting a
	(Serial 2/		carrier signal (i.e., a communication channel is currently open). In
			direct connect environments, this input is driven by DTR1 as part of the
	COM2)
			DTR1/DSR1 handshake.
12	DSR1*	J7-15	Data Set Ready 1 – Indicates external serial device is powered,
			initialized, and ready. Used as hardware handshake with DTR1 for
			overall readiness.
13	RXD1	J7-11	Receive Data 1 Input – This line is typically held at a logic 1 (mark)
			when no data is being transmitted, and is held “Off” for a brief interval
			after an “On” to “Off” transition on the RTS1 line to allow the
			transmission to complete.

24 QuickStart Guide CoreModule 800