Ampro Corporation 700 manual Serial a Interface J5A/B

Chapter 3 Hardware

Serial A Interface (J5A/B)

Table 3-12.		Serial A (Serial 1) Interface Pin/Signal Descriptions (J5A)
	Pin #		Signal	Description
	1		DCD1*	Data Carrier Detect 1 – Indicates external serial communications device is
				detecting a carrier signal (i.e., a communication channel is currently open). In
				direct connect environments, this input will be driven by DTR1 as part of the
				DTR/DSR handshake.
	2		RXD1	Receive Data 1 – Serial port 1 receive data in
	3		TXD1	Transmit Data 1 – Serial port 1 transmit data out
	4		DTR1*	Data Terminal Ready 1 – Indicates Serial port 1 is powered, initialized, and ready.
				Used as hardware handshake with DSR1 for overall readiness to communicate.
	5		GND	Digital Ground
	6		DSR1*	Data Set Ready 1 – Indicates external serial communications device is powered,
				initialized, and ready. Used as hardware handshake with DTR1 for overall
				readiness to communicate.
	7		RTS1*	Request To Send 1 – Indicates Serial port 1 is ready to transmit data. Used as
				hardware handshake with CTS1 for low level flow control.
	8		CTS1*	Clear To Send 1 – Indicates external serial communications device is ready to
				receive data. Used as hardware handshake with RTS1 for low level flow control.
	9		RI1*	Ring Indicator 1 – Indicates external serial communications device is detecting a
				ring condition. Used by software to initiate operations to answer and open the
				communications channel.
Notes: The shaded area denotes power or ground. The signals marked with * = Negative true logic.
Table 3-13.		Serial A (Serial 2) Interface Pin/Signal Descriptions (J5B)
	Pin #		Signal	Description
	1		DCD2*	Data Carrier Detect 2 – Indicates external serial communications device is
				detecting a carrier signal (i.e., a communication channel is currently open). In
				direct connect environments, this input will be driven by DTR2 as part of the
				DTR/DSR handshake.
	2		RXD2	Receive Data 2 – Serial port 2 receive data in
	3		TXD2	Transmit Data 2 – Serial port 2 transmit data out
	4		DTR2*	Data Terminal Ready 2 – Indicates Serial port 2 is powered, initialized, and ready.
				Used as hardware handshake with DSR2 for overall readiness to communicate.
	5		GND	Digital Ground
	6		DSR2*	Data Set Ready 2 – Indicates external serial communications device is powered,
				initialized, and ready. Used as hardware handshake with DTR2 for overall
				readiness to communicate.
	7		RTS2*	Request To Send 2 – Indicates Serial port 2 is ready to transmit data. Used as
				hardware handshake with CTS2 for low level flow control.
	8		CTS2*	Clear To Send 2 – Indicates external serial communications device is ready to
				receive data. Used as hardware handshake with RTS2 for low level flow control.
	9		RI2*	Ring Indicator 2 – Indicates external serial communications device is detecting a
				ring condition. Used by software to initiate operations to answer and open the
				communications channel.

Notes: The shaded area denotes power or ground. The signals marked with * = Negative true logic.

40 Reference Manual ReadyBoard 700