Stretching an Object in Level-1 Editing Mode

Use the Stretch command in Level-1 Editing mode to stretch place and route boundaries, snap boundaries, and other pins without entering Edit In Place mode. You can stretch multiple pins, including the place and route boundary and snap boundary both at level 1 and at the top level, in a single operation.

Stretched objects are snapped to a grid depending on the block type.

Block Type	Snap Behavior
Analog	The place and route boundary and pin edges are snapped to the manufacturing grid.
Digital	The place and route boundary is snapped to the placement grid and pin centers are snapped to the routing grid defined for the metal layer on which the pins are defined. If the pins are not on a metal layer, they are snapped to the manufacturing grid.

Block Type

Snap Behavior

Analog

The place and route boundary and pin edges are snapped to the manufacturing grid.

Digital

The place and route boundary is snapped to the placement grid and pin centers are snapped to the routing grid defined for the metal layer on which the pins are defined.

If the pins are not on a metal layer, they are snapped to the manufacturing grid.

A pin that is assigned a status of firm or locked is not moved. If a grid is not initialized, moved pins are not snapped.

If you have Measurement Display mode switched on, the measurements (dx, dy and dist) of the object are shown to be changing dynamically as it is being stretched.

You need to be in partial selection mode in order to select an edge or corner to stretch. Press F4 to toggle between partial selection and full selection modes.

The picture below illustrates the effect of using the Stretch command on a level-1 place and route boundary or snap boundary. You can select the boundary to be stretched either before or after you have started the command.

Virtuoso Layout Suite XL: Connectivity Driven Editing User Guide
Product Version IC23.1, November 2023