Launching Configure Physical Hierarchy
To open the Configure Physical Hierarchy window, do one of the following:
- From the Layout XL (or GXL) window, choose Launch – Configure Physical Hierarchy.
- To launch Layout XL (or GXL) from a schematic, check the Open CPH option in either the Create Physical Configuration View Form or Open Physical Configuration View Form.
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From the CIW, choose File – New or File – Open and create or open a cellview of type
physConfig.
The system checks out a Layout XL license if there is not one currently checked out.
If you have a large hierarchical design that takes a long time or fails to open in Layout XL, it might be that the logical elaboration performed by Configure Physical Hierarchy is causing the problem.
You can use the physical stop view list to limit the logical elaboration by switching on the cphStopLogicalElabAtPhysLeaf environment variable. This stops the elaboration of the logical design hierarchy when a node is reached which maps to one of the view names specified in the Physical stop view list field.
When cphStopLogicalElabAtPhysLeaf is set to t, global nets below the leaf instance in the schematic are not considered during the elaboration. If your design relies on such nets, Cadence recommends that you do not switch on this environment variable.
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