Utilizing the FG(G)676 Package LX75T and have a question pertaining to the MGT power supply. UG386, p.175-176 refer to creating power islands surrounding the MGT region of the FPGA.
If both sides of the FPGA have transceivers what is the recommended architecture for the power island in this case? Two separate power islands, or one power island spanning through the middle of the fpga, tapered towards the middle? If it is two separate power islands, what is the recommended way in achieving this?