Organizing the Design Constraints for Compilation - 2023.1 English

UltraFast Design Methodology Guide for FPGAs and SoCs (UG949)

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2023.1 English

The constraints are usually organized by category, by design module, or both, in one or many files. Regardless of how you organize them, you must understand their overall dependencies and review their final sequence once loaded in memory. For example, because timing clocks must be defined before they can be used by any other constraints, you must make sure that their definition is located at the beginning of your constraint file, in the first set of constraint files loaded in memory, or both.