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Altera_Forum's avatar
Altera_Forum
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18 years ago

Ethernet Link

Hi All, I have come across a very strange problem with ethernet board which has National's 83848M (Fast Ethernet) phy. When I connect this board with PC having Gigabit ethernet NIC or 10/100 Sw...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

I have come across some compatibility issues with certain Phys and auto-negotiation.

It might be worth testing the setup with your fast (100M) ethernet PC but set both ends to the sme speed AND duplex. i.e. try with them both forced to 100M and Full Duplex.

This could narrow the problem down to whether it is a signal integrity issue or an auto-negotiation compatibility issue

Rgds

Vern