Allegro Front to Back User Guide

Allegro Front-to-Back User Guide Getting Logical Design Ready for Physical Layout October 2019 45 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. Packaging Your Design (Advanced) This section contains the following information which you can use to package your design in System Capture, Design Entry HDL as well as OrCAD Capture: ■ Generating a Bill of Materials on page 45 ■ Updating the Schematic With the Changes in the Board on page 45 ■ Passing Properties from the Layout to Schematic on page 46 Generating a Bill of Materials You can use the BOM-HDL tool to generate bill of materials reports. A bill of materials report consists of three basic sections: ■ Report parameters Contains parameters, such as the report title, date, and template file used to generate the report. ■ Physical parts Contains properties for each physical part in the schematic. Any property attached to an instance or package can be included in the bill of materials report. ■ Callouts Contains callouts that describe any parts, such as ejectors, stiffeners, or mounting hardware that are required on the manufactured product, but are not graphically represented on the logical schematic. Updating the Schematic With the Changes in the Board You can use the Import Physical dialog box to update the schematic with the changes in the board. Import Physical by default runs in Constraint Manager enabled flow. If Constraint Manager has not been used to edit electrical constraints in Design Entry HDL. You can overwrite all existing electrical constraint information in the schematic with the electrical constraint information currently available in the PCB Editor Board File. You can also import only the electrical constraint information that has changed in the PCB Editor Board File since the last import and overwrite such constraints in the schematic.

• Cover
• c contents - Contents
• Preface
• About the Front-to-Back Flow
• How This Book is Organized
• Creating and Managing Libraries
• Allegro Front-end Tools Libraries
• Library Structure
• Creating and Managing Libraries
• OrCAD Libraries
• Capturing Logical Design
• Creating Project Using Allegro Tools
• System Capture
• You can also perform other page manipulation operations, such as creating a new page or deleting an existing page from the Project viewer. You can drag and move the pages up and down to change their order in the Project viewer.
• Allegro Design Entry HDL
• Creating Project Using OrCAD Capture
• Creating a Schematic
• Designing Schematic Using System Capture
• Creating Schematic Using OrCAD Capture
• Capturing Logical Designs using DE-HDL
• Capturing Logical Design Constraints
• Why Constraint Manager?
• Using Constraint Manager with Design Capture Tools
• All the constraints are stored in the Constraint Manager Database (CMDB) and saved in the dictionary and constraints file designname.dcf.
• Constraints in System Capture
• Capturing Constraints in Design Entry HDL
• Capturing Constraints in OrCAD Capture
• Creating Variants of Your Design
• Managing Variants in System Capture
• Creating Variants using Variant Editor
• Getting Logical Design Ready for Physical Layout
• Preparing a System Capture Design for Physical Layout
• Preparing a DE-HDL Design for Physical Layout
• Exporting a DE-HDL Design
• Forward Mode
• Preparing an OrCAD Capture Design for Physical Layout
• Exporting an OrCAD Capture
• Annotating the Design
• Packaging Your Design (Advanced)
• Generating a Bill of Materials
• Updating the Schematic With the Changes in the Board
• Passing Properties from the Layout to Schematic
• Designing Layout
• Physical Layout using OrCAD PCB Editor
• Creating a Board Outline
• Creating Symbols and Padstacks
• Importing Logic
• Defining Layers
• Defining Constraints
• Placement
• Routing
• Design Synchronization
• Physical Layout using OrCAD Capture
• Preparing the Schematic for Layout
• Property Flow from Capture to PCB Editor
• Generating Initial Board File
• Backannotation from PCB Editor
• Running Design Rules Check - Physical Rules
• Capturing Physical Constraints
• Using Constraint Manager with PCB Editor
• Synchronizing Schematics and Boards
• Need for Synchronization
• Design Synchronization Tasks
• Feedback Mode