What is AUI(Attachment Unit Interface)?
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 coonector 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 |
Attention reader! Don’t stop learning now. Get hold of all the important CS Theory concepts for SDE interviews with the CS Theory Course at a student-friendly price and become industry ready.
