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Altera_Forum
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16 years ago

Auto-Negociation fails between two Ethernet Marvell PHYs (88E1111)

Hello, I need to connect two PCIe development board via the Ethernet Marvell PHYs (88E1111) in order to validate an UDP solution (I'm using the TSE core). The thing is, Auto-Negociation between th...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

The only way to connect two links directly together is with a crossover. You can either use a crossover cable, or for the Marvell PHY, you can manually enable the crossover within the PHY. I can't remember which register this is inside the PHY. I'll have to look for it tomorrow. If you go back in time (say Quartus 7.1) you may find the old MAC driver which I think would enable the crossover in the PHY automatically if it couldn't negotiate.

Jake