Where I can see the Power Bank locations/topology/mapping in the Spartan-7 and UltraScale+ devices?
What User Manual does describe a mapping of the pins to the Power Banks?
Look for the ASCII pinout file for the part in question. For instance, I googled "Spartan 7 ascii pinout file" and got this link. https://www.xilinx.com/support/package-pinout-files/spartan-7-pkgs.html It has all of the Spartan 7 packages.