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Altera_Forum
Honored Contributor
11 years agoYou will need those signals to drive the PCIe HIP (module). For example the refclk is the PCIe reference clock that the transceivers need, the perstn is a reset input that is also derived from an input pin. There is quite a reasonable Altera pdf explaining the PCIe Avalon MM core, so it's best to have a read first, or you will not understand how to drive the core.