Macintosh RS-422
From HwB
(Difference between revisions)
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== Contributions == | == Contributions == | ||
| − | |||
* [[User:Joakim|Joakim Ögren]] | * [[User:Joakim|Joakim Ögren]] | ||
* [mailto:[email protected] Pierre Olivier] | * [mailto:[email protected] Pierre Olivier] | ||
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== Sources == | == Sources == | ||
| − | |||
* [http://www.faqs.org/faqs/macintosh/comm-faq/part1/ comp.sys.mac.comm FAQ Part 1] | * [http://www.faqs.org/faqs/macintosh/comm-faq/part1/ comp.sys.mac.comm FAQ Part 1] | ||
* Apple Tech Info Library, Article ID: TECHINFO-0001699 | * Apple Tech Info Library, Article ID: TECHINFO-0001699 | ||
[[Category:Connector]] | [[Category:Connector]] | ||
| + | [[Category:Serial]] | ||
Latest revision as of 16:55, 29 March 2007
It's possible to connect RS-232 peripheral to the RS-422 port available on Macintosh computers. Use RXD- as RXD, TXD- as TXD, Ground RXD+, Leave TXD+ unconnected, GPi as CD.
Pinout
8 PIN MINI-DIN FEMALE at the computer.
| Pin | Name | Dir | Description |
|---|---|---|---|
| 1 | HSKo |  |
Output Handshake |
| 2 | HSKi/CLK |  |
Input Handshake or External Clock |
| 3 | TXD- | |
Transmit Data (-) |
| 4 | GND |  |
Ground |
| 5 | RXD- | |
Receive Data (-) |
| 6 | TXD+ | |
Transmit Data (+) |
| 7 | GPi | |
General Purpose Input |
| 8 | RXD+ | |
Receive Data (+) |
Note: Direction is DTE (Computer) relative DCE (Modem).
Note: GPi is connected to SCC Data Carrier Detect (or to Receive/Transmit Clock if the VIA1 SYNC signal is high). Not connected on the Macintosh Plus, Classic, Classic II, LC, LC II or IIsi.
Contributions
Sources
- comp.sys.mac.comm FAQ Part 1
- Apple Tech Info Library, Article ID: TECHINFO-0001699