Report Clock Utilization Tables - 2025.2 English - UG906

Vivado Design Suite User Guide: Design Analysis and Closure Techniques (UG906)

Document ID
UG906
Release Date
2025-12-10
Version
2025.2 English

The report presents the clocking topology and placement details grouped into the following categories:

  • Clock primitives used in the design
  • Global clock resources
  • Global clock source details
  • Local clock resources
  • Clock region-specific clock and load information
  • Placement details for global clocks

Because netlist object names are often long and designs can include many clock nets and clocking elements, the report assigns short IDs for easier navigation.

  • A unique global ID (g<n>) for each net driven by a clock buffer
  • A unique source ID (src<n>) for each clock generator, such as an MMCM or input buffer
  • A unique local ID (<n>) for clock nets that do not use global clock routing

These IDs help you quickly locate specific clock nets throughout the report. When available, the original netlist object names appear in the final columns of each table.