I/O Pins and PR Boundary Updates

You specify the pins to be generated on the I/O Pins of the Update Components and Nets form. The options and use model are the same as for the I/O Pins tab on the generate Layout form.

Layout XL generates any missing pins, places them below the design boundary, and updates their connectivity appropriately. If a layout instance includes a terminal but no pin for a global layout net (because, for example, you have deleted the pin), the pin is regenerated. All pins are automatically snapped to the placement grid.

Pin permutation is not preserved during the update. If any component in the design needs to be updated, the command resets the permutation status of all the cells to that originally stored in the schematic.

Physical-only terminals (those with the physOnly property set to t) created to support an implicit inherited connection defined using a net expression in the schematic are not updated. Physical-only terminals are deleted only if they have no connections.

You specify how the place and route boundary is updated on the PR Boundary of the Update Components and Nets form. The controls and use model are the same as for the I/O Pins tab on the Generate Layout form.

If you uncheck the PR Boundary option on the form, the existing place and route boundary is retained and is not automatically resized to take into account the updated design.

Related Topics

Update Components and Nets Form

Specifying the Place and Route Boundary During Layout Generation