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YYang79's avatar
YYang79
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

Cyclone10GX Temperature Issue

Hi, I use a cyclone 10 gx fpga (10CX150YF780C5G) on my pcie card. One transceiver is used as a 10Gbps fiber link and other 4 transceivers are used as Gen1 Pcie X4 lanes. No external memory interfa...
SengKok_L_Intel's avatar
SengKok_L_Intel
Icon for Regular Contributor rankRegular Contributor
5 years ago

Yes, it sounds good to use the LL MAC 10G MAC IP example design. If the PMA value is not optimal, you may see the high bit error rate when you vary the temperatures.


  • YYang79's avatar
    YYang79
    Icon for Occasional Contributor rankOccasional Contributor
    5 years ago

    In LL MAC 10G MAC IP example design rev19.1 an IOPLL is used to generate 156.MHz and 312.5MHz, while in my design I use an fpll instead following the transceiver design guide line. That is the only difference. The example design works well on my board. So I changed my design to use IOPLL . The result is that it can work at high temperature now without error! It is 73C now but it used to fail at 57C.

    It looks it is a big improvement at least.

    My question is why is like that?