Forum Discussion

TerraX's avatar
TerraX
Icon for New Contributor rankNew Contributor
4 years ago
Solved

Cyclone V - Differential Pair Pin Assignment 1.5V PCML fitter error

When creating a new Quartus project similar to a demo example, I am trying to place XCVR pins in a blank project and getting an error from the 1.5V PMCL differential pins (HSMC_GXB_RX_p0 and HSMC_GXB...
  • Kshitij_Intel's avatar
    Kshitij_Intel
    4 years ago

    Hi Terra,


    I have told you earlier, you cannot directly connect, Please design custom logic to reconstruct the word. First correct your design then try to compile.


    Thank you

    Kshitij Goel


TerraX's avatar
TerraX
Icon for New Contributor rankNew Contributor
4 years ago

One idea I have about this error message is that the Clock pin I'm using for the PLL (CLOCK_50_B7A on Bank 7) is on a separate bank from the Tx & Rx pins (which are on bank GXB_L0). If that is the case, then I only have REFCLK_p0 to work with as the input to the PLL since it is on the same bank as the Rx & Tx pins I am trying to connect together. Does that sound about right?