09-02-2020 12:02 PM
I am using a Tandem configuration so PCIe boots in time for PCIe enumeration. I would like to use a Asynchronous PCIe reference clock. When testing with asynchronous clock, I noticed that Tandem was not booting in time for enumeration. In this case the PCIe bus never gets past the polling states. If I then soft reboot system (no FPGA configuration), the PCIe will properly enumerate.
If I switch to a synchronous "slot clock", the PCIe will boot without problem or need to soft boot.
Any Ideas what may be causing problem?
09-02-2020 02:25 PM
Thanks for the response. I assume you are talking about the on-board clock configuration and not an IP setting. If yes, I already checked the clock and it does not have SSC output.