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Altera_Forum's avatar
Altera_Forum
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16 years ago

Auto-Negotiation FAILED with TSEMAC and PHY Marvell 88E1111

I'm trying to check single socket example in a Cyclone III EP3c40. I've configured in SOPC in both case: as 10/100/1000Mbps Ethernet Only as 1000Mbps Small MAC result was always the sa...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

there are some things you can check:

-the MDIO communication with the PHY is working correctly? I suppose yes, otherwise it wouldnt recognize your Marvell PHY.

-the clock signals you use with both mac and phy are with the correct freq?

-your host PC NIC is able to auto-negotiate? maybe it worked with the 10/100, because these ones normally dont use autonegotiation.

- I wouldnt use the 1000 Small MAC config. in the TSE, because this way your are telling him only to connect if there is a Gigabit available on the other side, and it is probable that your PC dont have it