6.2. Guidelines: Control Channel-to-Channel Skew
At the package level, you must control the LVDS I/O skew for each I/O bank and each side of the device. If you plan to vertically migrate from one device to another using the same board design, you must control the package migration skew for each migratable LVDS I/O pin.
For information about controlling the LVDS I/O and package skew, refer to the related information.