Hi,
On the top page of the datasheet, there is the description of "Additive RMS Phase Jitter for PCIe Gen3 at 100 MHz :30 fs RMS (Typical)". Does it mean that you have history that LMK00338EVM passed PCIe Gen 3 compliance test? If the answer is yes, please let me know which test equipment you used at that time.
Best Regards,
Satoshi