Clock Regions Tables - 2023.2 English

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

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2023.2 English

The Clock Regions section is only available for the UltraScale™ device families and includes several tables to cover primitive and routing resource utilization per clock region. In the Clock Utilization window, the Show Metrics In Device Window button can be used to select the resource types to be displayed over each clock region in the Device window, as shown in the following figure.

Figure 1. Report Clock Utilization - Clock Region Resource Utilization Metrics in the Device Window

The Clock Regions tables are:

  • Clock Primitives: Utilization of each clock primitive type in each clock region.
  • Load Primitives: Utilization of non-clock sequential primitives in each clock region.

For both Clock Primitives and Load Primitives table, the Global Clock column shows the number of global clock nets routed on the horizontal distribution layer with or without loads in the reported clock region. Clock nets routed on the vertical distribution layer with no branching to the horizontal layer in the reported clock region are not counted. Clock nets routed on the routing layer are not counted.

  • Global Clock Summary: Shows the utilization of Global Clocks per clock region in a table which corresponds to the device clock region floorplan, as shown in the following figure. This table is only available in the text report.
    Figure 2. Report Clock Utilization – Global Clock Summary Example

  • Routing Resource Utilization: Shows the global clock routing resource utilization per type and per clock region.