Expedition PCB Introduction - bbs.hwrf.com.cnbbs.hwrf.com.cn/downpcbe/Expedition_PCB设计流程-919.pdf · Title: Microsoft PowerPoint - Mod_00_PCB Design process.ppt Author: JianFeng

Expedition PCB Introduction

February 2005

7-2 • Expedition PCB Introduction: Setting Up for Layout Copyright © 2005 Mentor Graphics Corporation

Design Source

CDB

DxDesignerExpedition


DxDesigner and Expedition PCB Integration (Cont.)

B

C

A


Creating Board Geometries

February 2005


Objectives

Upon completion of this module, you will be able to:♦ Create a board geometry that includes:

A board outlineMounting holesPlacement obstructsRouting boarder and obstructs


Board Outline


Board Outline (Cont.)

Edit > Place > Board Outline


Modifying the Board Outline

Endpoint Handle (Vertex)

Midpoint Handle

Selected Endpoint Handle

Start Point Marker(Object Origin)


Route Border

BoardOutline

RouteBorder


Mounting Holes

BoardOutline

RouteBoarder

MountingHole

Edit > Place > Mounting Hole


Mounting Holes (Cont.)

Edit > Place > Mounting Hole


Board Origins

Board OriginDrill Origin

Edit > Place > Origin



Setting Up for Layout

February 2005


Setting Up Parameters－General

Setup > Setup Parameters

A

B


Setting Up Parameters－Plane



Setting Up Parameters－Via Definitions



Editor Control — General

Setup > Editor ControlA

B


Editor Control — Routes

Setup > Editor Control

A


Editor Control — Grids



Net Classes &Clearance Defining


♦ Clearances

♦ Trace width

♦ Exceptional Area Rule

♦ Via define

♦ Diff-Pairs define

♦ TOP structure

♦ Length restrain

Group Match

Single Trace length


Invoking CES from Expedition PCB

Before CES Enabled

Replaced

After CES Enabled


What is CES?

♦ CES is a Constraint Editor System.

♦ CES is a common environment that can be accessed from most of Mentor Graphics front-end and back-end systems to define and refine the design constraints.

♦ Can be accessed stand-alone or from within:

Expedition PCB

DxDesigner


CES in the Design Flow

Constraint Editor System (CES)

Data

Front-End CES Database

Back-End CES Database

Data

Launch

Forward/Back Annotation

Expedition PCB

Updates Updates

DxDesigner

Design Capture


Activating CES in Expedition PCB

1

2

5

3

4

6


CES Browser


CES Spreadsheets

Constraint Subset

Tabs for Selecting Sheets


Updating Design with Actual Values

Data > Actuals > Update All/ Update Selected


Creating a Scheme

RMB

RMB


Creating a Net Class

1

2


Creating a Net Class (Cont.)

2 Enter a new name

New net class is added to every scheme

1 RMB


Assigning Nets to a Net Class

3 Select the desired nets

Click the button4

Select the Source and Target Net Class2

11


Setting up Trace Properties


Setting up Via Assignments


Creating a Clearance Rule

RMB

RMBFrom Default Rule values


Setting up Class to Class Clearances

1

2

Final Results

35

4



Placing Parts

February 2005


Objectives

Upon completion of this module, you will be able to:♦ Place parts and cells♦ Move, rotate, and push parts♦ Swap pins and gates♦ Back Annotate


Editor Control Placement Settings

Grids Tab

Parts Tab



Placing Parts and Cells

CriterionFilter

ActiveList

Properties

Place > Place Parts and Cells


Placing With Keyin Commands


Moving Parts

MovingPart

CrosshairCursor

NetlinesCoordinate

Readout

Place > Move


Rotating Parts

Place > Rotate 90

Place > Rotate 180


Pushing Parts

Place > Push


Aligning Parts

Align Right

Place > Align Right

Place > Align Left

Align Top

Place > Align Top

Place > Align Bottom


Part Swapping

U12 U13 U24

Select First

Select Second

U12 U24 U13

Place > Swap Parts


Color By Net

View > Display Control


Placing Mechanical Cells



Routing Traces

February 2005


Objectives

Upon completion of this module, you will be able to:♦ Perform manual routing tasks♦ Route using Auto-active routing tools


Routing Overview

ManualPlow RoutingMulti Plow

Semi-automaticFanout, Route,Reroute, Gloss


Fanouts

1. Select Pins

2. Route > Interactive > Fanout

before

after


Manual Routing — Plowing

Route > Interactive > Plow


Changing Layers

View > Display Control

Layer Pairs


Moving Traces and Vias


Fixing Traces and Vias

Fixed

Semi-fixed

UnFix


Plow Modes

♦ Forced Plow♦ Route Plow♦ Angle Plow♦ Dyna-Plow

♦ Multi-Plow


Gloss Mode

Gloss On Gloss Partial

FirstClick

SecondClick

FirstClick

SecondClick

Route > Interactive > Gloss


Semi-automatic Routing

Semi-automatic Routing Consists of:♦ Fanout♦ Tune♦ Route♦ Reroute♦ Auto Finish (during plowing)♦ Copy Trace♦ Push Trace♦ Gloss


Copying Traces

GhostedImage

SelectedTraces

Route > Interactive > Copy Trace


Rounding Traces

Rounded CornersAngled Corners


Teardrops


Changing Trace Widths

Route > Change Width

14


Generating Planes

February 2005


Objectives

Upon completion of this module, you will be able to:♦ Provide the definition of a plane♦ Create and delete plane shapes♦ Verify plane data


What Are Planes?


Negative and Positive Planes


Plane Shapes

EndpointHandle

Midpointhandle

Polygon, Circle,Rectangle


Plane Shape Properties

Edit > Place >Plane Shape


Modifying Plane Shapes

Vertex


Processing Planes


Setup > Net Classes and Clearances


Plans ProcessorRoute > Planes > Planes Processor


Plane OptionsRoute > Planes > Planes Processor


Deleting Plane Data

Route > Planes > Delete Plane Data


Verifying Plane Data



Creating Silkscreens

February 2005


Objectives

Upon completion of this module, you will be able to:♦ Explain the function of a silkscreen♦ Modify reference designators♦ Add silkscreen text♦ Generate silkscreen graphics


What Is a Silkscreen?

U17

74ALS000_SOP

ReferenceDesignator

Part Number

Outline


Renumbering Reference Designators

1

2

3

ECO > Renumber Ref Des


Renumbering Reference Designators (Cont.)



Moving Reference Designators



Adding Nomenclature and Graphics

BoardPart Number


Generating Silkscreen Graphics

Output > Silkscreen Generator



Generating Gerber and Drill Data

February 2005


Objectives

Upon completion of this module, you will be able to:♦ Create a Gerber photo-plot


Photo-plotting Overview

Artwork Layers


Gerber Machine Format

Setup > Gerber Machine Format


Photo-plotting OutputOutput > Gerber


Output File Contents

1

2

3

4

5

Output > Gerber


Padstack Holes Review


NC Drill

Output > NC Drill


Drill Chart Graphics

Expedition PCB Introduction - bbs.hwrf.com.cnbbs.hwrf.com.cn/downpcbe/Expedition_PCB设计流程-919.pdf · Title: Microsoft PowerPoint - Mod_00_PCB Design process.ppt Author: JianFeng

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