Connector - SUN LX/Classic/SS4/5/10/20 Serial Port

This port is located in modern SUN Sparcs such as SUN LX/Classic/SS4/5/10/20and has both serial ports (A/B) in the same connector. Simply plugging in aregular serial cable in results in accessing port A.

25 PIN D-SUB FEMALE at the computer.

(at the computer)

Pin	Name	Direction	Description
2	TXD	Output	Transmit Data (Port A)
3	RXD	Input	Receive Data (Port A)
4	RTS	Output	Request to Send (Port A)
5	CTS	Input	Clear to Send (Port A)
6	DSR	Input	Data Set Ready (Port A)
7	GND	---	System Ground (Port -)
8	CD	Input	Carrier Detect (Port A)
11	DTR	Output	Data Terminal Ready (Port B)
12	CD	Input	Carrier Detect (Port B)
13	CTS	Input	Clear to Send (Port B)
14	TXD	Output	Transmit Data (Port B)
15	TC	Input	Transmit Clock from DCE, usually not used (Port A)
16	RXD	Input	Receive Data (Port B)
17	RC	Input	Receive Clock from DCE, usually not used (Port A)
18	TC	Input	Transmit Clock from DCE, usually not used (Port B)
19	RTS	Output	Request to Send (Port B)
20	DTR	Output	Data Terminal Ready (Port A)
21	TCO	Output	Transmit Clock from DTE, usually not used. (Port A)
25	TCO	Output	Transmit Clock from DTE, usually not used. (Port B)

Note: Direction is DTE (Computer) relative DCE (Modem).
Note: Do not connect SHIELD(1) to GND(7).

Source: HW-Book 2001-06-08
Last modified: 2007-06-27 16:22:58.0
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