IEEE 802.3 Clause 28
E80873
IEEE 802.3 Clause 28 is the section of the Ethernet standard that defines the Auto-Negotiation mechanism used by twisted-pair Ethernet PHYs to automatically select link parameters such as speed and duplex.
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Ethernet standard clause
→
|
| appliesTo |
twisted-pair Ethernet PHYs
→
|
| associatedWith |
MDI-based twisted-pair media
→
|
| defines |
Auto-Negotiation advertisement register
→
Auto-Negotiation control register → Auto-Negotiation expansion register → Auto-Negotiation link control functions → Auto-Negotiation link partner ability register → Auto-Negotiation mechanism → Auto-Negotiation next page registers → Auto-Negotiation state machine → Auto-Negotiation status register → duplex mode negotiation → exchange of capabilities between link partners → fault indication via Auto-Negotiation messages → jabber and link integrity checks related to Auto-Negotiation → link failure detection conditions for Auto-Negotiation → link partner ability resolution rules → link speed negotiation → parallel detection function → procedures for automatic link parameter selection → restarting Auto-Negotiation procedures → timing requirements for Auto-Negotiation exchanges → |
| notCovers |
Auto-Negotiation for optical fiber PHYs
→
MAC layer protocols → |
| objective |
to allow automatic configuration without manual setting of speed and duplex
→
to enable multi-vendor interoperability for link setup → |
| partOf |
IEEE 802.3
→
|
| referenceInPractice |
“Clause 28 Auto-Negotiation” in Ethernet specifications
→
|
| relatedTo |
Ethernet link segment initialization
→
Ethernet physical layer (PHY) → |
| scope |
Auto-Negotiation on twisted-pair physical media only
→
|
| specifies |
base link code word format
→
management registers for Auto-Negotiation → next page message format → priority resolution function for advertised abilities → |
| standardizedBy |
IEEE
→
|
| supports |
negotiation of 100BASE-TX capabilities
→
negotiation of 10BASE-T capabilities → negotiation of full-duplex operation → negotiation of half-duplex operation → |
| usedBy |
Ethernet network interface controllers
→
Ethernet repeaters that support Auto-Negotiation → Ethernet switches → |
| uses |
Fast Link Pulses
→
link code words → parallel detection when link partner does not support Auto-Negotiation → |
Referenced by (1)
| Subject (surface form when different) | Predicate |
|---|---|
|
10GBASE-T
→
|
autoNegotiationStandard |