Version 15.5
Training Manual October 21, 2005
Allegro
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PCB SI Foundations - iLS
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Table of Contents Allegro PCB SI Foundations
October 21, 2005 Cadence Design Systems, Inc. iii
NOTE: Lab exercises for this class were developed in cooperation with Altera Corporation to provide real design
examples. Please read the following notice before proceeding with the course.
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Allegro PCB SI Foundations Table of Contents
iv Cadence Design Systems, Inc. October 21, 2005
October 21, 2005 Allegro PCB SI Foundations v
Contents
Lesson 1: Introduction to Allegro PCB SI Design Flow.......................................................................1-1
Cadence PCB Tools Used in This Class........................................................................................1-1
Getting Help ..................................................................................................................................1-2
Allegro PCB SI Design Flow ........................................................................................................1-3
Allegro PCB SI Foundations Lab Flow.........................................................................................1-4
What is Allegro PCB SI 610?........................................................................................................1-5
Allegro PCB SI 610 Window........................................................................................................1-6
Basic Display Functions: Display Ratsnest...................................................................................1-7
Basic Display Functions: Color and Visibility..............................................................................1-8
Getting Information About Objects...............................................................................................1-9
Component Placement.................................................................................................................1-11
Labs .............................................................................................................................................1-12
Lab 1-1: Basic Allegro PCB SI Features...................................................................................1-13
Lesson 2: Allegro PCB SI Design Flow — Pre-placement...................................................................2-1
Allegro PCB SI Design Flow ........................................................................................................2-1
Design Flow—Pre-Placement .......................................................................................................2-2
Board Setup Requirements for Extracting and Applying Topologies...........................................2-3
Database Setup Advisor.................................................................................................................2-4
Database Setup Advisor—Cross Section ......................................................................................2-5
What is the Layout Cross Section?................................................................................................2-6
Defining the Layout Cross Section................................................................................................2-6
Materials Editor.............................................................................................................................2-8
DC Voltages ..................................................................................................................................2-9
Database Setup Advisor—DC Nets.............................................................................................2-10
Device CLASS and PINUSE Properties .....................................................................................2-11
Database Setup Advisor—Device Setup.....................................................................................2-13
Editing the Parts List ...................................................................................................................2-14
Editing Pin Types ........................................................................................................................2-15
Labs .............................................................................................................................................2-16
Lab 2-1: Board Setup Requirements — Invoking the Database Setup Advisor........................2-17
Lab 2-2: Board Setup Requirements — Editing the Board Cross Section................................2-21
Lab 2-3: Board Setup Requirements — Identifying DC Nets...................................................2-24
Lab 2-4: Board Setup Requirements — Device Setup ..............................................................2-27
Lab Summary ..............................................................................................................................2-31
Database Setup Advisor—SI Models..........................................................................................2-32
Signal Model Assignment Form..................................................................................................2-32
Auto Setup Models......................................................................................................................2-34
Signal Analysis Library Browser ................................................................................................2-35
Translating and Adding Libraries................................................................................................2-36
The Model Browser.....................................................................................................................2-38
Model Integrity............................................................................................................................2-40
Model Integrity Features .............................................................................................................2-41
Model Dump/Refresh ..................................................................................................................2-42
Database Setup Advisor—SI Audit.............................................................................................2-43
