The UltraScale portfolio offers many devices that share the same package footprint. This migration path allows you to switch between devices to accommodate changes in design size or the need for specific additional functionality, such as moving from Virtex™ to Kintex™ devices when additional DSP blocks are needed.
While most PCI Express configurations can easily migrate in a package, there are some designs and settings where migration of a specific PCI Express implementation might not be possible. This section walks you through how to create PCI Express designs that can be migrated across the desired parts, and identifies migration pin outs that cannot be migrated.
For details on pin migration as a whole for the UltraScale family, see UltraScale Architecture PCB Design: User Guide (UG583) [Ref 10] .