Apple AUI (AAUI) Connector

#Computer#Network connectors#connectors

Available on Macintosh Quadra computers, Apple Ethernet NB Card, and LaserWriter IIg printers?

14 pin Apple AAUI MALE connector pin-out & layout

14 pin Apple AAUI MALE connector  at the card

The interface between the MAC-layer and Layer 1 is AAUI (Apple Attachment Unit Interface). This connector can be used to connect different physical interface tranceivers, like 10Base-T, 10Base-2 or 10Base-5. The electrical characteristics and functions are identical to the AUI connector defined in the IEEE 802.3. The signalling used is EIA modified RS422. With a speed of 230k bps. The signal encoding used FMO (bi-phase space). AAUI signals have the same description, function, and electrical requirements as the AUI signals of the same name, as detailed in the IEEE Standard 802.3-1990 CSMA/CD, section 7.

PinNameDescription
1FN PwrPower (+12V @ 2.1W or +5V @ 1.9W)
2DI-AData In circuit A
3DI-BData In circuit B
4VCCVoltage Common
5CI-AControl In circuit A
6CI-BControl In circuit B
7+5V+5 volts (from host)
8+5VSecondary +5 volts (from host)
9DO-AData Out circuit A
10DO-BData Out circuit B
11VCCSecondary Voltage Common
12NCReserved
13NCReserved
14FN PwrSecondary +12V @ 2.1W or +5V @ 1.9W
ShellProtective GndProtective Ground

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