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DmitryKo's avatar
DmitryKo
Icon for New Contributor rankNew Contributor
2 years ago

1G/10Gb Ethernet FPGA IP uses XGMII instead of GMII in 1Gb mode

Hello, all. I attempt to launch the Ethernet 1Gb link through the 1G/10Gbe and 10GBASE-KR PHY Intel Arria 10 FPGA IP. 1Gb patch-cord connects SFP+ port from board with Arria10 with SFP+ port on ...
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ZiYing_Intel's avatar
ZiYing_Intel
Icon for Frequent Contributor rankFrequent Contributor
2 years ago

Hi Dimistry,


I now transition this thread to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread.


Best regards,

zying


  • DmitryKo's avatar
    DmitryKo
    Icon for New Contributor rankNew Contributor
    2 years ago

    Hi, Zying,

    Q1. My question was: I see ingoing packets (LLDP) on RX on 1G/10Gbe and 10GBASE-KR PHY IP.
    I see them on XGMII_RX_DATA[7:0] although I would have expected them on gmii_rx_data since the speed 1Gb is set.

    Your answer: Received data may be seen on XGMII port, but it should be ignored while in 1GbE mode

    If I will ignore the data on the XGMII port and I will not get any data on GMII port I will be in situation when I can't use 1G/10Gbe and 10GBASE-KR PHY Core IP. I don't understand how I can use your answer, sorry.

    Q3. I am ready to use GMII interface, but I don't understand how to follow your recommendation, if the IP CORE itself uses XGMII in not documented mode. Could you provide more concrete recommendation what I need to change in CORE configuration to use GMII interface, please?

    Best regards, Dmitry.