Allegro Front to Back User Guide

Allegro Front-to-Back User Guide Creating Variants of Your Design October 2019 38 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. Creating Variants using Variant Editor Using the design variance solution is simple. All you have to do is to create the base design in Design Entry HDL and then define the variant component in Variant Editor. Variant Editor supports an intuitive user interface (UI). Without resorting to complex editing of text files, you can define variant components, generate Bill of Materials (BOM) reports, annotate special designators to any components, annotate variant data, and merge variant databases using Variant Editor. Variant Editor allows you to: ■ Use the Physical Part table (PPT) driven data for defining variant component values. ■ Generate the Bill of Material (BOM) that reflects the electrical stuff list for a variant. ■ Generate a delta list of components from the base design for a variant. ■ Generate a comparative BOM of different variants. ■ Generate BOM reports in multiple formats, such as spreadsheet format and HTML format. ■ Annotate variant data from the variant database into the schematic. ■ Generate the interface file that is read by PCB Editor to create variant assembly drawings. ■ Cross-probe with the Design Entry HDL. ■ Support associated mechanical parts, callouts, and global find for specific components. ■ Synchronize the changes made in the variant database with the changes made in the original schematic. ■ Replace an existing component with another component that has a different name or a non-compatible footprint.

• 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