P1 bringup: GTH channel to SFP port inconsisent mapping
Mapping of GTH channels for quads 224, 226 and 228 is reversed compared to other quads. The channel nets don't match harness entries (0:3 to 3:0).
Therefore for a 2x4 SFP the mapping is:
top- 3:0
bottom- 0:3
If this is deliberate should add note to schematic and could rationalise net names across sheets for clarity. If not should update schematic/layout for next revision so mapping is consistent across all quads.
For now I have mapped in FPGA so all SFP rows are 0:3. Also worth discussing how we plan to label ports on the back panel.