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StarterWare AM1808 MDIO Ethernet

Nicholas Angelos Angelou
Prodigy 265 points

Hi all,

I have a few questions related to driver modifications on the Ethernet interface.

Is there a way to remove reliance on the MDIO pins or fake it out in some way?  We have a test fixture board with the ports and PHYs, and everything routes through an FPGA, which does not have enough I/O for the MDIO.

Thanks in advance,

-Nick

  • 0
    Intellectual 485 points

    Hi Nick,

    Intriguing application... just my thoughts/questions

    Nicholas Angelos Angelou said:
    Is there a way to remove reliance on the MDIO pins or fake it out in some way?

    From what I see, MDIO  and EMAC are implemented as different Device Abstraction Layers. So, if you have a separate arrangement for PHY interface, then you could have your own abstraction and replace references with MDIO with the references to your interface.

    Nicholas Angelos Angelou said:
    We have a test fixture board with the ports and PHYs, and everything routes through an FPGA, which does not have enough I/O for the MDIO.

    If you do not have an interface for PHY interaction (which in this case is MDIO) how do you get link related details? If you have a way seems you have no problem?

    Not very sure of what you need, perhaps more details would help?

    Thanks and regards,

    Madhvapathi Sriram