Product Documentation
Virtuoso Concurrent Layout User Guide
Product Version IC23.1, November 2023

Automatic Routing in a Layer-Based Design Partition

In a layer-based design partition, the scope of edit is defined in terms of a range of layers. When you perform routing inside a layer-based design partition, you can route fully between the pins that are between the layers in the design partition.

Different designers are expected to work in their respective set or range of layers. By default, Concurrent Layout offers to keep the edit mode to Only Select Inside Partition, which is a moderate level of restriction. The level of restriction varies with different edit modes in the following way:

Edit mode

Level of editing allowed

Description

Off

No restrictions

You can create and edit objects on any layer.

Only Select Inside Partition

Moderate

You can only create and edit objects on layers that are included in the current design partition. However, you can use vias that are outside the range of layers in the current design partition.

Only Edit Inside Partition

Restrictive

You can only create and edit objects on layers including the vias that are inside the current design partition.

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