Design Hierarchy Window

Use the Design Hierarchy window to navigate your design hierarchy, create custom I/O groups, and quickly navigate between various sections of your design.The Design Hierarchy window displays your design's overall hierarchy and grouping structures.

The Design Hierarchy window contains the following three root hierarchy elements (which cannot be collapsed):

I/O Pins

• Expanding the I/O Pins Root displays I/O symbols in your design

• Selecting the I/O Pins Root displays the Design Object List (DOL) for I/Os

• Selecting an I/O symbol selects the symbol in all other views

• I/O symbols can be selected and dragged and dropped from the Design Hierarchy to the Package Pin or Device Architecture windows

Global Logic

• The Global Logic root displays global logic elements

• Global logic including BUFGs, BRAMs, MULTs, PPC405s, GTs, DLLs, and DCMs are displayed under this root

• Grouping mechanisms are disabled for Global Logic

Logic

• The Logic Root displays your design's hierarchy as defined in the NGD file.

• Names of the hierarchical elements displayed are not full hierarchical names

• Selecting a hierarchy selects all of its sub-hierarchies recursively

• Design Logic Hierarchy is read-only, and cannot be created, deleted, moved or renamed

• Grouping mechanisms are disabled for Logic