Cadence PCB Best Practices

Constraint Compiler User Guide

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Allegro Constraint Compiler User Guide Allegro Constraint Compiler October 2019 27 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. ■ A Spacing Net Class with prefix NC_ gets created using the group name defined in Object Table Constraint Compiler Starter Templates To assist in table creation, Microsoft Excel spreadsheet (.xlsx) template files are provided as a part of installation. You can copy, modify, and save these tables with new names in your constraint library. Note: The tables should be saved in .csv format only using File – Save As command to be read constraint compiler. The Starter Table worksheet tab contains the default column headers as well as a description of each at the bottom of the worksheet. This worksheet tab is where the table information should be entered. Each template file has Data Row Examples worksheet tab that contains sample templates with specific examples based on the type of template file. Rule template files have additional worksheet tabs that provides the different constraint header names for each of the domains (Physical, Spacing, and Electrical). The starter templates exist in the installation directory at \share\pcb\examples\acc\Starter_Templa tes. Table 1-1 Data Table Templates Name of Data Table Name of Template File Mapping Name Table mapping_starter.xlsx Object Table object_grouping_starter.xlsx

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