Quartus® Prime Standard Edition User Guide: Design Compilation

ID 683283
Date 10/22/2021
Document Table of Contents

3.4.5. SDC Constraint Protection

The SDC Constraint Protection option specifies whether Analysis & Synthesis should protect registers from merging when they have incompatible timing constraints. For example, when you turn on this option, the software does not merge two registers that are duplicates of each other but have different multicycle constraints on them. When you turn on the Timing-Driven Synthesis option, the software detects registers with incompatible constraints, and you do not need to turn on SDC Constraint Protection. Click Assignments > Settings > Compiler Settings > Advanced Settings (Synthesis) to enable the SDC constraint protection option.