Forum Discussion

PYtte's avatar
PYtte
Icon for Occasional Contributor rankOccasional Contributor
7 years ago

Can I inteface the Ethernet PHY on DE10 Nano directly from the FPGA?

I want to test some Ethercat IP:s on a DE10 Nano board and need two Ethernet interfaces. I would like to use the one already on the board but it seems it only interfaces through the HDS.

I will add an extra PHY board for the other port but if I can't use the KSZ9031RN PHY directly I think I will need to add two extra ports.

2 Replies

  • Deshi_Intel's avatar
    Deshi_Intel
    Icon for Regular Contributor rankRegular Contributor
    7 years ago

    Hi PYtte,

    Unfortunately the answer is no. I checked Terasic DE10 nano board user guide doc page 37 and it mentioned on board Micrel PHY chip is connected to Cyclone V FPGA HPS Ethernet MAC block.

    So, you need to use HPS Ethernet MAC to interact with this on board PHY chip and not regular FPGA soft TSE IP to talk to the PHY chip.

    Thanks.

    Regards,

    dlim

  • PYtte's avatar
    PYtte
    Icon for Occasional Contributor rankOccasional Contributor
    7 years ago

    Ok thank you for your response. I was hoping it was using some of the pins that could be loaned to the FPGA.

    I will have to add a PHY externally then to connect to GPIO for the FPGA.

    Br

    PYtte.