Asynchronous Serial Cable Pinouts

 

Table B-2 Straight-through Cable

Pins (port)	Name	Definition	Direction	Pins (modem)
2	TXD	Transmit Data	Output	2
3	RXD	Receive Data	Input	3
4	RTS	Request to Send	Output	4
5	CTS	Clear to Send	Input	5
6	DSR	Data Set Ready	Input	6
7	SGND	Signal Ground		7
8	DCD	Data Carrier Detect	Input	8
20	DTR	Data Terminal Ready	Output	20

Note ¯ A 6' male-to-male straight-through cable can be purchased from Lucent InterNetworking Systems, using product code MC-6.

Synchronous Serial with RS-232 Cable Pinouts

Note ¯ RS-232 only supports signalling at speeds up to 56Kbps. If the device at the other end of the cable supports RS-423 signalling, speeds up to 128Kbps can be obtained.

 

Table B-3 Synchronous Serial Port Pinout with RS-232

Pin	Name	Definition	Direction
2	TXD	Transmit Data	Output
3	RXD	Receive Data	Input
4	RTS	Request to Send	Output
5	CTS	Clear to Send	Input
6	DSR	Data Set Ready	Input
7	SGND	Signal Ground
8	DCD	Data Carrier Detect	Input
15	ST	Send Timing	Input
17	RT	Receive Timing	Input
20	DTR	Data Terminal Ready	Output

Synchronous Serial with V.35 Cable Pinouts

Note ¯ To connect with this port, use the V.35 cable included with your IRX. To order additional cables from Lucent InterNetworking Systems, use product code DC-6.

 

Table B-4 Synchronous Serial Port Pinout with V.35

Pin	V.35 Pin	Name	Definition	Direction
2	P	TXD	Transmit Data	Output
14	S	TXD-
3	R	RXD	Receive Data	Input
16	T	RXD-
4	C	RTS	Request to Send	Output
5	D	CTS	Clear to Send	Input
6	E	DSR	Data Set Ready	Input
7	B	SGND	Signal Ground
8	F	DCD	Data Carrier Detect	Input
15	Y	ST	Send Timing	Input
13	AA	ST-
17	V	RT	Receive Timing	Input
19	X	RT-
20	H	DTR	Data Terminal Ready	Output

RJ-45 Connector Numbering

Figure B-1 Pin Numbering for RJ-45 Female Connector

Ethernet Cabling