What is AUI(Attachment Unit Interface)?
Last Updated :
08 Jul, 2022
AUI stands for Attachment Unit Interface. AUI is a portion of Ethernet standards that specifies how a cable is going to connect to an Ethernet card. AUI is a physical and logical interface. AUI is defined in IEEE 802.3 standard for 10BASE5 Ethernet. AUI connector is a 15 port connector that provides a path between an Ethernet node’s Physical Signaling and the Medium Attachment Unit (MAU).
S.No. |
Signal |
Description |
1 |
CI-S |
Control In Circuit Shield
|
2 |
CI-A |
Control In Circuit A
|
3 |
DO-A |
Data Out Circuit A
|
4 |
DI-S |
Data In Circuit Shield
|
5 |
DI-A |
Data In Circuit A
|
6 |
VC |
Voltage Common (0 V)
|
7 |
CO-A |
Control Out Circuit A (not used)
|
8 |
CO-S |
Control Out Circuit Shield (not used)
|
9 |
CI-B |
Control In Circuit B
|
10 |
DO-B |
Data Out Circuit B
|
11 |
DO-S |
Data Out Circuit Shield (not used)
|
12 |
DI-B |
Data In Circuit B
|
13 |
VP |
Voltage Plus (+12 V)
|
14 |
VS |
Voltage Shield (not used)
|
15 |
CO-B |
Control Out Circuit B (not used)
|
Shell |
PG |
Protective Ground
|
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