Constraining Clock Domain Crossings - 2022.1 English

UltraFast Design Methodology Guide for Xilinx FPGAs and SoCs (UG949)

Document ID
UG949
Release Date
2022-06-08
Version
2022.1 English

Upon verification of the clocking constraints, you must identify asynchronous and over-constrained clock domain crossing paths.

Note: This section does not explain how to properly cross clock region boundaries. Instead, it explains how to identify which crossings exist and how to constrain them.