# Serial (SUN)

Available on SUN computers since the SUN3 series (1988) to the current UltraSparc systems
(RS423/RS232)

(at the computer)

25 PIN D-SUB FEMALE 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 | - |
10 | n/c | - |
11 | n/c | - |
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).

Contributor: Joakim Ögren

Source:
SUN SPARCengine Ultra 20 OEM Manual

Copyright © The Hardware Book Team 1996-2001.
May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2001-06-07