www.tinhgiac.com Allegro Constraint Manager User Guide Generating and Viewing Constraints Differences

Allegro® Constraint Manager User Guide Generating and Viewing Constraints Differences Topics in this chapter include Generating Constraint Difference Report Viewing Constraint Difference Report Representing Constraint Difference Generating Constraint Difference Report Managing design difference is critical to deliver a quality product with today's complex PCB/SIP designs Design differences include connectivity (logical), implementation (physical), and constraint changes Comparing Constraints using Differencing Utility A utility is provided to compare two databases for constraint differences You can select any of the listed databases and compare them for constraint differences: Schematic database (.cpm) Layout database (.brd, sip, mcm) Constraints Manager Database (.dcf, tcf) This utility also compares two different versions of the schematic databases two different versions of the layout databases the schematic database with the layout database To compare the constraints, complete the following steps: Run command cmDiffUtility The Cadence Constraints Differencing Utility dialog box is displayed Click the browser button to select the databases The file selection dialog box is displayed The files are displayed based on the file type filter By default the filter is set to Constraints Files (.dcf,.tcf) Click Compare Files The comparison starts and a report is generated Comparing Constraints using Allegro PCB Designer You can compare constraint values from technology files in Allegro PCB Designer To generate the Constraint Differences, complete the following steps: Choose File - Import - Constraints or File - Import - Technology file The Import Constraints dialog box is displayed Select Report Only check-box for generating the constraint difference report Choose and open the dcf file to compare The Constraint Report is displayed Viewing Constraint Difference Report You can open the report in a built-in report viewer The report viewer supports a simple, intuitive graphical user interface for displaying constraint differences between the two databases.This viewer consists of a toolbar, and view window Report Viewer Toolbar The figure below displays the report viewer toolbar The table below describes the function of each tool button Table 8-1 Constraint Difference Report: Toolbar Description Tools Function Previous Selection shows previous view of the report Next Selection shows next view of the report Export report to HTML export report as HTML page Print Preview shows printer-friendly view of the report Close Window closes the report viewer Exporting Report as HTML You can export to share the constraint difference report as an HTML page Choose Export report to HTML from toolbar The Export Report dialog box is displayed Browse the directory to save the exported Specify the report folder name and choose OK The HTML page of the report is generated Note: You can open the HTML report page in any browser Printing Report To print the report complete following steps: Choose Print Preview from the toolbar The printer view is displayed for review Choose Send to printer for printing the report Representing Constraint Difference The Constraint Difference Report viewer is a two-frame, tree-view based representation You can navigate in the report by using following modes: Navigation Mode Function By Tree-view shows summary of the selected node in the tree-view By following Links shows summary of an object when selected the object name link By previous and next selections show selections made forward and backward in the report viewer Viewing per-layer and array Changes The Constraint Difference Report for per -layer changes is displayed View Modes There are three viewing modes: Status/Summary only (S) Shows description only with the number of changes Differences only(D) Shows Destination and Source constraints for each attribute Unchanged layers are not shown All values(A) Shows constraint at Destination and Source for all layers 10 Return to top of page For support, see Cadence Online Support service Copyright © 2012, Cadence Design Systems, Inc All rights reserved 11 12 ... filter is set to Constraints Files (.dcf,.tcf) Click Compare Files The comparison starts and a report is generated Comparing Constraints using Allegro PCB Designer You can compare constraint values... files in Allegro PCB Designer To generate the Constraint Differences, complete the following steps: Choose File - Import - Constraints or File - Import - Technology file The Import Constraints. .. Select Report Only check-box for generating the constraint difference report Choose and open the dcf file to compare The Constraint Report is displayed Viewing Constraint Difference Report You