Ethernet Bus

AUI Pin Out


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Ethernet Bus AUI Pin-Out

The Attachment Unit Interface [AUI] is a 15 pin D connector used with Ethernet. The pinout for the 15 pin D is shown below.
The AUI is used to transition between a network card and Ethernet back bone [cable]. The interface between the Ethernet/IEEE 802.3 controller and the baseband transceiver or broadband modem..
A 15-pin 'D' connector is really called a D-Sub 15 or DA15, and not a DB15.
The pinout for the AUI connector as found on an Apple Computer; Apple Computer AUI Pinout


15-Pin D

Ethernet AUI Pin Out
Pin Number Pin Name Signal Function
1 GND Control In Circuit Shield
2 CI+ Control In Circuit A
3 TX+ Data Out Circuit A
4 GND Data In Circuit Shield
5 RX+ Data In Circuit A
6 GND Voltage Common
7 NC Not Used
8 GND Ground, or Not Used
9 CI- Control In Circuit B
10 TX- Data Out Circuit B
11 GND Data Out Circuit Shield
12 RX- Data In Circuit B
13 +12v Voltage Plus
14 GND Voltage Shield
15 NC Not Used

D-Sub Connector Manufacturers are listed on the D-Sub-miniature Connector page.

Back to the 10/100 Base Ethernet page, or 1000 base Ethernet page for additional pinout tables and interface descriptions.

Electrical Engineering Design Key words: Ethernet Bus, AUI, Interface, Ethernet define the Physical and Electrical layers, Physical, Mechanical, Connector, Pinout, Pin-out, Pin out, Pinouts, Pins, Signal Name, Type, Description, Brief, specification, Personal Computer, NICK card, CSMA, LAN, IEEE802.3

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Last Modified 5/3/08
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