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Abstract Step in Standalone Abstract Generation
The Abstract step describes the third stage of the abstract generation process. Abstract Generator adjusts pin shapes, performs blockage modeling, creates sites, and calculates overlap layers during the Abstract step.
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Select one or more cells in the main window and click the Abstract button. Alternatively, select Flow – Abstract.
This opens the Running step Abstract form.
There are six tabs on the Running step Abstract form- Adjust, Blockage, Density, Fracture, Site, and Overlap. -
You can select the options you need on this form and click the Run button.
The Percent Complete message box reports the progress of the step.
If there are no valid Pins or Extract views for a cell, Abstract Generator automatically runs the Pins and Extract steps prior to running the Abstract step.
The QuickAbstract option enables you to improve the performance of Abstract Generator by 30 percent for small and medium sized designs. If this option is set to true, Abstract Generator does not generate intermediate cellviews namely Pin and Extract cellviews; it generates only Abstract cellviews. By default, the QuickAbstract option is set to false.
When the Abstract step is complete, Abstract Generator places a symbol against the cell in the Cell pane to indicate the status of the Abstract view that was created. Abstract Generator automatically detects shapes placed in WSP regions and ignores these shapes while creating blockages.
In the Running step Abstract form, use the radio buttons on the left to navigate the options pages for the different steps and bins you are using.
Multi-Patterning Technology
To support Multi-Patterning Technology (MPT), the options on the various tabs of the Running step Abstract form now recognize the colors of the original shapes in the layout editor. Therefore, the shapes created in the abstract inherit the colors from the original shapes. For example, two pin shapes created by fracturing a single rectilinear shape will inherit the color of the original rectilinear shape. Abstract Generator respects color shifts and layers that are present on instances or shapes.
Related Topics
Pins Step in Standalone Abstract Generation
Extract Step in Standalone Abstract Generation
Multi-Patterning Technology Support in Abstract Generator
Retain Layout Information in the Abstract View
Creation of Fill Blockages on Specific Layers
Bus Annotation in Abstract Generator
Support for Copying Mixed Signal Routing Constraints from Layout to Abstract View
Suppress Messages Issued by Abstract Generator
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