Using a Pblock to Restrict Clock Buffer Placement - 2024.1 English

UltraFast Design Methodology Guide for FPGAs and SoCs (UG949)

Document ID
UG949
Release Date
2024-06-26
Version
2024.1 English

When a clock buffer does not need to be placed in a specific clock region, you can use a Pblock to specify a range of clock regions. For example, use a Pblock when a BUFGCTRL is needed to multiplex two clocks that are located in different areas. You can assign the BUFGTRL to a Pblock that includes the clock regions between the two clock drivers and let the placer identify a valid placement.

Note: AMD does not recommend using a Pblock for a single clock region.