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Altera_Forum's avatar
Altera_Forum
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9 years ago

Is it possible to connect two ethernet DE2-115 PHY chips back to back?

I have a DE2-115 board, and I want to connect two ethernet PHY chip back to back by using Media-Independent Interface (MII) (to work as a simple forwarder). I've been trying to connect MII pinouts wi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

Thanks all for replying,

At first, I thought that would be possible because I read a similar question in another forum (with different PHY chip) [link here] (https://e2e.ti.com/support/interface/ethernet/f/903/t/294643#pi239031350filter=all&pi239031350scroll=false). I also used the document showing PHY-to-PHY MII connection.

I don't know if my code didn't work because different PHY chip behaves differently, or I misunderstood MII interface. After reading the replies now I think I should learn how to write some codes to configure these two PHY chips correctly.

Actually my goal is to tap MII interface and encode it with manchester coding (as per IEEE ethernet standard) for learning purpose.