Xpedition xpcb Layout Advanced. Student Workbook

Transcription

1 Xpedition Student Workbook 2015 Mentor Graphics Corporation All rights reserved. This document contains information that is trade secret and proprietary to Mentor Graphics Corporation or its licensors and is subject to license terms. No part of this document may be photocopied, reproduced, translated, distributed, disclosed or provided to third parties without the prior written consent of Mentor Graphics.

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3 Module 1 Advanced Placement Table of Contents Placing Components on a Radial Grid...3 Moving Components on a Radial Grid...8 Placing Copied Groups from Another Design...10 Paste Map Dialog...12 XY Place From a File...13 Additional Key Modifiers...14 Running Scripts Example...15 Lab: Advanced Placement...17 Module 2 Advanced Routing Concepts Gloss Modes...21 Multi-Plow...22 Real Trace Dynamic Routing Use Cases...24 Real Trace Delayed Routing Use Cases...25 Sketch Routing...26 Workflow 1: Fully Interactive Sketch Routing...27 Workflow 2: Directed Sketch Routing...28 Workflow 3: Automatic Implied Sketch Routing...29 Sketch Routing with Via Patterns...30 Packed vs Unpacked Sketch Routing...31 Schemes...32 Rule Areas...33 Conductive Shapes...34 Changing Width of Routed Traces...35 Changing Width During Routing...36 Toggle Curve...37 Modify Corners...38 Hug Trace...39 Auto Route Fences...41 Auto Route Spread Pass...43 Teardrops...44 Tracedrops...47 Lab: Advanced Routing Concepts...48

4 Module 3 Advanced Routing Topology Table of Contents Defining Pin Pairs...51 Topology...52 Custom Routing Order...53 Constraint Manager Netline Order...54 xpcb Layout Netline Manipulation...58 Netline Manipulation Virtual Pins...59 Other Topology Types...60 Pin Types...63 Net Order Behavior...65 Hazards...66 Lab: Advanced Routing Topology...67 Module 4 Differential Pairs Defining Differential Pairs Manually...71 Defining Differential Pairs Automatically...72 Differential Pairs in Spreadsheet...73 Differential Pairs Spacing...74 Differential Pair Rules...75 Phase Matching Constraints...76 Differential Spacing Constraint...77 Differential Pair Convergence Constraints...78 Separation Distance Constraint...79 Impedance Constraints...80 Differential Pairs Layer Usage...81 Routing Differential Pairs...82 Differential Pair Topologies...83 Hazards...84 Phase Tuning Differential Pairs...85 Target Lengths Dialog...86 Automatically Tuning a Set of Nets with Target Lengths...87 Manually Tuning a Differential Pair...88 Moving Differential Pairs...89 Calculating Differential Impedance...90 Lab: Differential Pairs...94

5 Module 5 Lengths and Delays Table of Contents Minimum Length...97 Tune...98 Manual Tune...99 Tuning Controls Maximum Length Maximum Length Behavior Tuning Meter Hazards Matched Length Matched Length Behavior Matched Length Hazards Stub Length Stub Length Behavior Maximum Vias Maximum Vias Behavior Restricted Layers Delay Formulas Default Tolerances Constants and Variables Relational Delay Formulas Delay Formulas Behavior Lab: Lengths and Delays Module 6 Parallelism and Crosstalk Crosstalk Max Defining Crosstalk Rules Victims and Aggressors Level Maximum Crosstalk Calculations Parallelism Rules Assigning Rules Parallelism Hazards Crosstalk Hazards Cumulative Crosstalk Example...135

6 Table of Contents Parallelism Hazards Parallelism Hazards Spacers Lab: Crosstalk and Parallelism Module 7 Micro Vias and Padstack Editor Functions Multiple Via Objects MVO Placing Multiple Via Objects Manipulating Multiple Via Objects More on Multiple Via Objects Micro Vias Blind and Buried Via Definitions Micro Via Definitions Micro Via Clearances Micro Vias in Net Classes Via in Pad Considerations Interactive Micro Vias Auto Routing Micro Vias Auto Routing Example Setup Micro Via Strategies Via Span Display Via Spans and NC Drill Padstack Processor Pads Padstack Processor Inner-Layer Pad Removal Padstack Processor Padstacks Lab: Micro Vias Appendix A Topology Planning and Routing The Problem and a Solution Concepts Bus Planning and Target Setup Process Setup in CM Net Explorer Bus Paths Target Areas Overview and Guidelines Displaying and Placing Target Areas...178

7 Table of Contents Bus Routing Bus Shielding Shielding Properties Auto Router Bus Shielding Controlling Bus Tuning Lab: Topology Planning and Routing Appendix B Report Writer Invoking the Report Writer Report Writer Database Creating a Database File Commands Invoke From xpcb Layout Data Extraction From Report Writer Tools Configuring Tools Launching Tools xpcb Layout Tools Other xpcb Layout Tools Defined Reports Queries Basic Interactive Query Query Snap Shot Features Query Snap Shot Features Saving Queries Queries Joining Tables Cross Tab Queries Lab: Report Writer Appendix C Constraints Accessibility Management User-Level Constraint Management Constraint Management Capabilities Constraint Manager Control Mechanism Editing the Environment Opening Constraint Manager Standalone Defining Constraint Visibility/Edit-ability...221

8 Table of Contents Closing and Re-opening Constraint Manager Standalone Updating Constraint Manager Users Environment No Lab: Constraints Accessibility Management Appendix D Mentor Graphics Support Mentor Support Plan Expert Product Support Comprehensive Online Solutions Flexible Training Mentor Productivity Services Productivity Services Categories...233