Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Ethernet autonegotiation

I am just wondering what kind of procedures are running during the link establishment in 100Base-T ethernet in case auto negotiation is disabled (i.e. forced mode) at both ends of the ethernet con...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Yes, parallel detection is used if one end has aneg enabled and the other doesn't. If both ends have aneg disabled, they both send idle, and the mac operates in whatever mode you specify (half/full). When either end sees idle, it establishes a link.

Cheers,