You must consider many issues when designing a state-of-the-art PCB. Use our detailed PCB Checklist to make sure you take care of everything.
We also provide a system level summary of PCB design flow emphasizing signal and power integrity in our white paper entitled, "Methodologies for Efficient FPGA Integration into PCBs."
Virtex-4® PCB Design Guide describes the PCB guidelines for the Virtex-4 family. It covers SelectIO signaling, RocketIO signaling, power distribution systems, PCB breakout, and parts placement.
Virtex-II® User Guide (Chapter 4) provides detailed information on PCB considerations for Virtex-II FPGAs.