Sun Serial (DB25) pinout

serial interface

25 pin D-SUB female connector
at the computer

Pin	Name	Dir	Description
1	n/c	-
2	TXD		Transmit Data
3	RXD		Receive Data
4	RTS		Request to Send
5	CTS		Clear to Send
6	DSR		Data Set Ready
7	GND	-	System Ground
8	DCD		Data Carrier Detect
9	n/c	-	BUTTON_POR (Power-on reset) for Sun Ultra 80 / Sun Blade 1000 / Sun Blade 2000 / Sun Fire 280R / Enterprise 420R
10	n/c	-	BUTTON_XIR_L (Transmit internal reset) for Sun Ultra 80 / Sun Blade 1000 / Sun Blade 2000 / Sun Fire 280R / Enterprise 420R
11	n/c	-	+5 Vdc for Sun Ultra 80 / Sun Blade 1000 / Sun Blade 2000 / Sun Fire 280R / Enterprise 420R
12	n/c	-
13	n/c	-
14	n/c	-
15	TRxC		Transmit Clock
16	n/c	-
17	RTxC		Receive Clock
18	n/c	-
19	n/c	-
20	DTR		Data Terminal Ready
21	n/c	-
22	n/c	-
23	n/c	-
24	TxC		Transmit Clock
25	n/c	-

Note: Direction is DTE (Computer) relative DCE (Modem)

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Pinouts.ru > RS-232 and other serial ports and interfaces pinouts listing > Pinout of Sun Serial (DB25) and layout of 25 pin D-SUB female connector	Document status:	correct
Source(s) of this and additional information: SUN SPARCengine Ultra 20 OEM Manual, from Hardware Book	1 reports
Last updated at Sat Jun 25 2005. Submit additions or corrections for this document.	Is this document correct or incorrect? What is your opinion?

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