In our Intel Core i main board, there has a DS80PCI102 to re-drive the PCIe gen 1/2/3 signal pairs, see below for schematics.
It passed PCIe gen2/3 SI measurement but failed at PCIe gen3 Pretest, see below for Preset result.
How can we resolve this issue? please kindly share us your comment or thought.
Thanks a lot!