Problem with (ATX)PLL and fPLL on Cyclone 10GX DevKit
Posted:
Hello,
we want to use a Cyclone 10GX Development Kit Board to transfer data from a PC to a custom optical link. Xillybus does a great job connecting the boart to the PC via PCIe.
But when I add an (ATX)PLL or fPLL to the project (completely independent from the Xillybus-stuff) I can't get it to lock to the externally applied clock. An IOPLL works without problems (but cannot be used for the transceivers).
Removing xillybus_ins immediately fixes the misfunction of the PLLs. Already tested with different clock-pads and frequencies.
Any idea what I am doing wrong or could try?
Best, Chris
we want to use a Cyclone 10GX Development Kit Board to transfer data from a PC to a custom optical link. Xillybus does a great job connecting the boart to the PC via PCIe.
But when I add an (ATX)PLL or fPLL to the project (completely independent from the Xillybus-stuff) I can't get it to lock to the externally applied clock. An IOPLL works without problems (but cannot be used for the transceivers).
Removing xillybus_ins immediately fixes the misfunction of the PLLs. Already tested with different clock-pads and frequencies.
Any idea what I am doing wrong or could try?
Best, Chris