Quartus® Prime Standard Edition User Guide: Design Compilation

ID 683283
Date 10/22/2021
Document Table of Contents Invert Clocks in Destination Partitions

For best results, clock inversion should be performed in the destination logic array block (LAB) because each LAB contains clock inversion circuitry in the device architecture. In a flat compilation, the Quartus® Prime software can optimize a clock inversion to propagate it to the destination LABs regardless of where the inversion takes place in the design hierarchy. However, clock inversion cannot propagate through a partition boundary (except from a parent partition to a child partition) to take advantage of the inversion architecture in the destination LABs.