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comccmoc's avatar
comccmoc
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3 years ago

Cyclone V dedicated flash pins with generic serial flash interface

I am getting "Illegal constraint of I/O pad" errors when attempting to connect a GSFI IP to top level I/O corresponding to the NCSO, DCLK, and DATA[3..0] pins, even though I have it set in the GSFI I...
FvM's avatar
FvM
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3 years ago

Have you set these pins to "use as regular IO" in the device and pin options, tab dual purpose pins?

  • comccmoc's avatar
    comccmoc
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    3 years ago

    Unfortunately, the only things I have listed in that window are Data[15..8] and Data[7..5]. Both are already listed to be used as regular I/O.