Placement of Virtual FigGroups

Virtuoso Placer supports placement of virtual hierarchies in the Custom Digital and Like Schematic modes.

By default, virtual figGroups are placed as is. The contents of the virtual hierarchy are placed within the rectangular or rectilinear area boundary of the virtual hierarchy. The instances inside the figGroups are not modified.

If a virtual figGroup is frozen, the instances inside it are not modified. The entire figGroup is placed as a unit. The placer does not break any synchronous clones that exist in a design.

When Adjust PR Boundary is selected in the Automatic Placer form, the boundaries of virtual hierarchies are padded based on the value of the areaBoundaryEnclosure environment variable.

After placement, whenever a stretch or chop operation is done on the area boundary of a virtual hierarchy, the Like Schematic placer is automatically called to ensure all the contents of the virtual hierarchy are placed within the new areaBoundary, which can be either rectangular or rectilinear.

Related Topics

Automatic Placement Form

Setting the Assisted Placement Options in the Placement Options Form

Setting Automatic Placement Options in the Placement Options Form

Setting Common Options in the Placement Options Form