Assign net to local clock

• Families supported

• Purpose

• Tools / How to enter

Families Supported

The following table shows which families support this constraint and which file formats and tools you can use to enter or modify it:

Purpose

Use this constraint to assign regular nets to local clock routing or to LocalClock regions. This results in the creation of a LocalClock region that spans the area of the local clock net.

If there are enough local clock resources but not enough global clock routing resources available in a device, you can assign regular nets that have high fan-out to the dedicated local clock routing resources which can lead to better performance for your design.

Tools /How to Enter

You can use one or more of the following commands or GUI tools to assign a net to a local clock:

• PDC - assign_local_clock

• GCF - use_global

• ChipPlanner - Creating LocalClock regions

See Also

Constraint entry

assign_local_clock (PDC)

use_global (GCF)

Creating LocalClock regions