Vivado Design Suite User Guide: Synthesis (UG901) - Xilinx
Sep 30, 2015 ... industry-standard Synopsys design constraints (SDC). IMPORTANT: Vivado
synthesis does not support UCF constraints. Migrate UCF constraints to XDC
constraints. For more information, see the ?UCF to XDC Constraints Conversion?
in the ISE to Vivado. Design Suite Migration Guide (UG911) [Ref 7].
Un extrait du document