Hi there,
I'm designing a PCB that incorporates a Virtex4 FX60 with 16 RocketIOs. All RocketIOs function only as a receiver and I wonder if you should care for length compensation on my FR4 board, anyway. The reason I am not sure is that in my opinion each RocketIO synrchonizes itself independently on the incoming data stream since I am using 8B/10B coding. If this is true I could save myself a lot of useless work... :-)
Regards Joe