Cadence PCB Best Practices

Constraint Compiler User Guide

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Allegro Constraint Compiler User Guide Allegro Constraint Compiler October 2019 8 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. The Constraint Compiler has two main sections: Library Browser The left section represents constraint libraries. Each library consists of constraints and mapping data in form of tables, which are saved in.csv format. The data tables captures constraint information in form of key/value pairs and is used when searching a library to find data for compiling. The data tables are generic in structure and can be leveraged with any design. For information on how to create and use data tables, see Data Tables By default, library browser shows all the.csv files of the current working directory and its sub- directories, which is specified by the Library Path. To access other libraries, click the button before Library Path. The path of the constraint libraries is displayed. Selecting the path opens a file browser to select library folder for viewing in the Select Files section of the compiler. You can set the library path to the value of accpath environment variable in Config folder in the Paths category in the User Preferences Editor.

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