Technotes


Pinouts



Technote HW 19April 1985



Revised: March 1988
July 1985
Written by: Mark Baumwell April 1985

This note gives pinouts for Macintosh ports, cables, and other products.

Below are pinout descriptions for the Macintosh ports, cables, and various other products. Please refer to the Hardware chapter of Inside Macintosh and the Macintosh Hardware Reference Manual for more information, especially about power limits. Note that unconnected pins are omitted.


Macintosh Port Pinouts

Macintosh Serial Connectors (DB-9)
Pin		Name			Description/Notes
1		Ground
2		+5V			 See Inside Macintosh  for power limits
3		Ground
4		TxD+			Transmit Data line
5		TxD�			Transmit Data line
6		+12V			See Macintosh Hardware chapter for power limits
7		HSK			 HandShaKe: CTS or TRxC, depends on Zilog 8530
					      mode
8		RxD+			Receive Data line; ground this line to emulate RS232
9		RxD�			Receive Data line

Macintosh Mouse Connector (DB-9)

Other Pinouts

Macintosh Cable Pinouts

Note for the cable descriptions below:

The arrows ("Æ") show which side is an input and which is an output. For example, the notation "a Æ b" means that signal "a" is an output and "b" is an input.

When pins are said to be connected on a side in the Notes column, it means the pins are connected on that side of the connector.

Macintosh to Non-Apple Product Cable Pinouts



Further Reference:




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