Row Regions in Modgens
(Layout EXL and Higher Tiers) All Modgen creation, modification, and regeneration commands, including the Modgen on-canvas commands, recognize row regions. Therefore, a Modgen, when created or regenerated, automatically fits into an existing row region that is valid for the members in the Modgen configuration. If invalid, the row region is ignored during Modgen generation.
When a Modgen is created interactively from the layout design, the orientations of the Modgen members may be altered to ensure compact placement of the Modgen members within the placement rows.
(Virtuoso Advanced Node for Layout Only) To support FinFETs, the layout editor automatically snaps the Pcells in Modgens to the snap pattern. The entire Modgen block is snapped to the top-level snap pattern shape.
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