Apple Attachment Unit Interface from FOLDOC

AAUI ⇝

Apple Attachment Unit Interface

(AAUI) A 14-position, 0.050-inch-spaced ribbon contact connector. Early Power Macs and Quadras had an AAUI (Apple Attachment Unit Interface) port (rectangular shaped) for Ethernet, which requires a transceiver. To use twisted pair cabling, you would need to get a twisted pair transceiver for the computer with an AAUI port. Some Power Mac computers had both an AAUI and RJ-45 port; you can use one or the other, but not both. The pin-out is:

 Pin Signal Name Signal Description
 ---- -------------- ---------------------------------
 1 FN Pwr Power (+12V @ 2.1W or +5V @ 1.9W)
 2 DI-A Data In circuit A
 3 DI-B Data In circuit B
 4 VCC Voltage Common
 5 CI-A Control In circuit A
 6 CI-B Control In circuit B
 7 +5V +5 volts (from host)
 8 +5V Secondary +5 volts (from host)
 9 DO-A Data Out circuit A
 10 DO-B Data Out circuit B
 11 VCC Secondary Voltage Common
 12 NC Reserved
 13 NC Reserved
 14 FN Pwr Secondary +12V @ 2.1W or +5V @ 1.9W
 Shell Protective Gnd Protective Ground

AAUI signals have the same description, function, and electrical requirements as the AUI signals of the same name, as detailed in IEEE 802.3-1990 CSMA/CD Standard, section 7.

Last updated: 2000年02月10日

Nearby terms:

Apple Address Resolution Protocol ♦ Apple Attachment Unit Interface ♦ Apple Computer, Inc.

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