There is currently no sequence requirement between the digital power supplies, Vccint/Vccaus/Vccio, and the GTH analog power supplies, MGTHAVCC, MGTHAVCCRX, MGTHAVCCPLL, and MGTHAVTT. There are requirements for sequencing of the GTH analog power supplies with respect to each other.These sequencing requirements are documented in the
Virtex-6 FPGA Data Sheet, DS152.