Advanced PCB Layout Automation - Mentor Gmentorg.com.cn/download/2015/07 - PCB layout.pdf · ©...

Advanced PCB Layout Automation

www.mentor.com© 2014 Mentor Graphics Corp. Company Confidentialwww.mentor.com

© Mentor Graphics Corp. Company Confidential2

Layout Complexity Challenges

Biggest board: 14.3x14.7” Smallest board: 0.5x0.5” Most layers: 24 Average trace/space: 4/4th Most vias: 44,500 Most nets: 13,000 Most connections: 24,000 Most components: 10,500 Most FPGAs: 19 Largest % high-speed nets: 97% Longest trace distance: 2.8mi (4.6km) Highest passive/active ratio: 55:1



Layout Complexity Challenges

Use of advanced technologies (% of entries)– HDI: 40%– RF/microwave: 26%– Flex/rigid flex: 9%– Chip on board: 11%

Design for… (% of entries)– Signal integrity: 86%– Manufacturability: 89%– Power integrity: 74%– Reliability: 80%– Cost: 77%



Advanced Layout with Xpedition

Easy-to-use layout tools enable collaborative design of highly complex PCBs – Fast, high-quality placement & routing under user control– Single, intuitive environment – Dynamic (WYSIWYG) plane editing– Multi-user simultaneous layout & designer-

driven automation– Optimized signal & power quality– Correct-by-construction design methodology– Integrated manufacturing optimization

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Xpedition delivers game-changing technology for competitive advantage



Advanced Layout with XpeditionKey Technologies

Hierarchical group planning & placementSketch routing

2D/3D design Concurrent designCommon constraint environment



Differentiated Value

Intuitive, efficient design environment– Easy to use; simplified management of complex designs

Routing automation– User control; hand-routed quality; shorter design time

Hierarchical group planning & placement– Minimize placement time; manage engineering intent

3D design & validation– Minimize MCAD re-spins with optimized layout

Concurrent design– Reduce design cycles by 50%+



Agenda

GUI & toolbox

Placement & planning

Routing automation

Break (15 minutes)

3D design



GUI & Toolbox Features



Tool Adoption/Learning Challenges

Increasing design complexity drives need to touch more tools– Designers can no longer specialize in one tool– Need for greater consistency, integration across flow– Need design environment that is easy to learn and re-learn– Need environment that maximizes individual efficiency

– Fewer mouse clicks; less screen clutter; more customization

Focus on time to productivity



Easy To Use Design Environment

10

Intuitive user interface– Consistent, logical

Personalized productivity– Layout of toolbars, dialogs;

reusable schemes

Easy to learn– Video tooltips; startup guide

Efficient– Maximize work area– Organize & access design data



Most recent PCBs

Help & Tutorials

Create & open PCBs



Window Docking Controls

Users can customize UI for more

efficient workspace depending on

their tasks:

– Move windows to

desired location on screen

– Combine windows into a

single, tabbed window

– Automatically collapse

window when not in use



Extended Tooltips

Tooltips with animated video

demos for ease-of-use

– Help at the designer’s fingertips

– Long descriptions or ‘(VIDEO)’

– Minimize learning curve

– No need to open documentation



Updated Toolbars & Menus

Improved graphics & icons

Toolbars– Grouped by activity

Easily add/remove commands– Can be saved with scheme– New Edit toolbar for six universal

commands

Menus– Reorganized for simplicity– Removed unlicensed commands



Display Control – Customizability

Favorites– Quick access to your

most used commands

Hide Row– Remove less used features to

streamline the window

Search Bar– Find infrequently used controls

Sections– Expand, collapse, and reorganize

for personalized view



Display Control – Enhanced Graphics

Global Transparency

Dim Mode

Individual Trace, Pad, Plane controls per layer

Fixed, Semi-Fixed, Locked patterns

Net Names on Traces

Dynamic Highlight

Color by Net: Add Selected

Screen Cursors



Select Mode

Place, Route and Draw without

entering specialized modes

Driven by “Global View & Interactive

Selection”

Context sensitive RMB, Action Key,

and default commands

Unified Copy, Paste, Move, Rotate,

Fix, Lock on objects



Context Sensitive Menus

Menu actions will update based

on the designer’s current

selection

Grouped by Place, Route and

Drawing commands

Traces: easily switch layers &

width (Minimal, Expansion)



Selection List

Provides a way to view and manage the selected design objects



Keyin Commands

Activates when you start typing

– Provides list of potential

commands

– Displays syntax and recently used

commands

– Type ‘?’ or ‘help’ for

documentation



Planning & Placement



Placement Challenges

Circuitry with complex topologies requires more in depth planning

Efficient communication of engineering intent

Organization for the placement of thousands of parts

Time to market pressures make reuse a priority!

With ever increasing design complexity you need to achieve increased productivity during the design planning and placement phase



Planning & Placement

Improve collaboration with engineering– Visualize engineering intent

Increase designer efficiency– Persistent, hierarchical planning groups– Easily manage and adjust individual parts or groups– User managed netline visualization

Organize, protect and reuse circuit groups



Hierarchical Planning Overview

Planning Groups are the heart of the new placement & planning

– Persistent organization of parts that can be used in all phases of layout

Groups can be defined from schematic or within xPCB

Groups can be used early to optimize connectivity

Group Outlines are available to manipulate all parts in a group

Groups are hierarchical

– Parent-child relationships can be defined through drag & drop

– Top-down management of the circuitry



Planning Groups

New objects that represent groups of related parts

Visualized with symbolic “bubbles” that indicate combined area of parts– Larger circle → more space

needed to place group

Parts and sub-groups can be placed using the RMB

Group name

Component

Sub-Group



Floorplanning

Connectivity between Planning Groups is visualized by netlines

Widths signify the amount of connections between groups

– Thicker line → more connections

Reorganize circuit groups by minimizing connection length

Simple & effective way to drastically improve placement

– Compared to previous methods, this is a ground-breaking process





Placed Groups

Placed circuits have persistent grouping → Group Outline around all objects– Outline dynamically updates as objects are

manipulated

Manipulate the entire group by selecting the Group Outline– Move, Rotate, Copy, Push, Fix Lock actions– Freeze Group: allows circuit to be moved

but not individual objects

Each object now has a Part Ref Des– Always fitted within part outline– Used as a handle to select parts



Component Explorer

New interface that drives all placement and planning– Replaces existing ‘Place Parts & Cells’

dialog– Supports all previous functionality

Navigator View allows creation & editing of Groups– Placement status icons for Groups

List View displays all components within board– Extensive filtering capabilities



Component Explorer

Advanced graphical features

– Cross-probing

– Component Marking

– Component Preview

– Connection Options

– Place by Schematic

Quick access to Spares, Mechanical

Cells & Drawing Cells



Front-end designers can pass design intent onto back-end

– Add ‘Cluster’ property to schematic parts

– User Group will appear in xPCB, including sub-groups

Works for ‘Room’ property too

– Designate areas of the board where parts should be placed

Layout designers can also create their own Groups

Clusters & Rooms



Marking Components

User-managed netline visibility in Display Control

– ‘Between Marked Comps’

– ‘From Marked Comps’

Allows user to focus on one block of circuitry at a time

Mark Groups or specific parts





Routing Automation



Routing Challenges

Tight design density & exploding design constraints require automation to manage

Auto routing can produce low quality results forcing heavy rework

Poor support for advanced mfg. technologies demands workarounds



User-Controlled Automation

Routing environment– User control– Quality (mfg, performance)– Complete

– Digital, analog, flex, rigid-flex– High-speed, HDI, embedded

Intuitive methods– Easy to learn, fast to execute– Apply powerful routines

with little effort



Customer Feedback on Routing Performance

“How much faster do you estimate for the overall routing task?”

– “Depending on the design, with many BGA’s and large groups of nets, somewhere between 50-60%.”

– “I think I personally can get 35-40%.”

– “Focusing on routing DDR that previously took 2.5-3 days just to route. I was able to complete it in about 4 hours!”

37



Fanout Patterns

Works on multiple components

& high-pin count devices

Supports SOIC & BGA

component types

Apply from ‘Fanout Selected’

button or RMB menu



Net Explorer

Provides quick access to grouping to

help organize routing strategies

– Navigator View displays constraint

grouping (read-only) and allows

creation & editing of User Groups

– List View displays nets in the selected

group

Additional control through cross-

probing & marking



Netline Visibility

Netlines are now selectable design objects– Visible within Selection List– Controlled from ‘Global View &

Interactive Selection’

Additional graphical optionsin Display Control– Dynamic Filtering– ‘From Marked Nets’– Transparency



Sketch Router

Unparalleled speed & efficiency

Two Sketch styles– Freeform: draw artistic “doodle”– Line: draw straight-line segments

Two routing styles– Packed: keeps traces together– Unpacked: spreads traces out

Powerful, yet simple to use1. Select target netlines2. Draw Sketch path3. Hit ‘Sketch Route’



SR Via Patterns

Use via patterns to let Sketch

Router switch layers

– Five pattern styles with five

rotations each

– ‘Arbitrary’ pattern lets software

choose

Experiment with multiple styles

until you receive best results



Hug Router

Supplements Sketch Router –

use as a post-processor

Hugs existing routing when

creating a new trace

– Push & shove traces and vias

– Free to use any allowable

layers and vias



Real Trace Plow

Dynamic– Push & shove traces as soon as

the clearance gets too small

Delayed– Waits until cursor hits point

where there is no violation →performs a single push & shove to insert the trace

Both modes available off RMB– Mouse up style– Mouse drag style



Active Clearances

Displays clearance information in

real-time during Plow

– Adjust circle size and color

from Display Control

Toggle on & off with RMB

Works for Delayed & Dynamic

Real Trace Plow



Prohibit Violations

Turns off DRC for Plow Mode temporarily– Toggle on & off with RMB

Creates clearance violations only when necessary– i.e. push & shove cannot

place trace otherwise

Affects only the area around plowed trace– Stipple pattern reminder

Use ‘Repair’ command after



Phase Tuning

Tuning now supports dynamic

length matching

– New CES ‘Phase Tol’ and ‘Phase Tol

Distance Max’ constraints

– New Online Hazard: Phase Matching

– New graphic icon: Diff Pair Phase Match

– Automatic & Manual Tuning controls

Sawtooth Pattern parameters in

Editor Control



3D Design



Why 3D in PCB Design?

Reduce PCB / MCAD iterations – Eliminate problems typically found late in

design cycle – Avoiding collisions with board(s), components,

enclosures, etc…– Ensuring connectivity is correct across all connectors– Ensuring the mounting holes and apertures are aligned

– Improve collaboration via 3D visualization

Photorealistic look at the board before it gets manufactured– Visualize complicated structures

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True 3D Layout

True parametric 3D mechanical kernel in PCB layout– Not just an interface, one environment for 2D & 3D

3D library content included– Models for over 4 million part numbers

Photo-realistic visualization Component planning, placement & manipulation Documentation & collaboration via 3D PDF 3D constraints & design rule checks 3D spatial measurement Integrated ECAD/MCAD collaboration

50



3D Mechanical Collaboration

Visualize and immediately identify issues within a 3D environment

Evaluate and propose incremental changes Review and validate proposals before

implementing

Real-time collaboration between electrical PCB layout and mechanical CAD systems

Accept/reject proposed changes Synchronize the final results between MCAD

and ECAD Trace the decision process



Integrated 3D Environment

Parametric 3D mechanical kernel

Integrated with the 2D Editor to

improve productivity

3D Constraints to ensure improved

design quality – detects collisions in

the X, Y, Z directions

Import custom models and export

models & 3D PDF





Display Control – 3D View Options



Mentor 3D Library (M3DL)

Over 4.4+ million parts

Over 3,000 unique packages

Electrical information added

to the 3D Model

– Pin Numbers

– Underside height parameter

– Physical and material properties

– TH pin size parameters



Importing 3D Models

Unmodeled parts will have 2.5D composite model based on height

Import custom models into Xpedition to validate board:– Enclosures– Heatsinks– Mechanical screws– Secondary PCBs

Supports industry-standard file formats: .SAT, .STEP, .IGS

Align model & reuse mapping for other parts on board



Multi-board 3D Modeling

Import other Xpedition PCBs into your current design– Auto-saved as .XTDA– Can export as .SAT or .STEP

Import as ‘PCB’ model type for unique constraints

Imported boards are view-only

Ability to export multi-board assembly as a single model



3D Clearances

3D Constraints– Supports ranges

(minimal & optimal values)– Independent XY & Z rules– 3D instance rule override

3D includes three types of DRC:– Dynamic: detects & reports

collisions instantly– Online: violations appear in ‘View

Hazards’ dialog– Batch: must run full analysis to

view violations



MCAD Collaborator

Visualize and immediately identify issues within a 3D environment

Evaluate and Propose incremental changes

Review and Validate proposals before implementing

Accept/Reject proposed changes

Synchronize the final results between MCAD and ECAD

Trace the decision process



MCAD Collaborator



VX Feature Summary Updated Start Page

Window Docking Controls

Extended Tooltips

Updated Toolbars & Menus

Display Control

Select Mode

Context Sensitive Menus

Selection List

Keyin Commands

3D Designer

Import 3D Models

3D Clearances

Multi-board Modeling

Planning Groups

Placed Groups

Component Explorer

Clusters & Rooms

Marking Components

Net Explorer

Netline Visibility

Sketch Router

SR Via Patterns

Hug Router

Real Trace Plow

Active Clearances

Prohibit Violations

… and many, many more!



Find More Information on Xpedition

Xpedition Web Pagehttp://www.mentor.com/pcb/xpedition/pcb-layout/

Mentor Ideas for Xpeditionhttps://mentor.brightidea.com/expedition

Mentor Xpedition Enterprise Communityhttps://communities.mentor.com/community/pcb/xpedition

Mentor PCB on YouTubehttps://www.youtube.com/user/mentorxpedition

Mentor Graphics Xpedition Enterprise Bloghttp://blogs.mentor.com/xpedition/



Presentation Sources TechNote 586150: VX releases: Switching releases now that

the Configurator has been discontinued

TechNote MG586218: Understanding the Release Switcher message: 'The following releases will be unregistered/registered'

Jerry Suiter – Xpedition xPCB Layout VX.1

Jerry Suiter – VX Xpedition Layout Differences

Jerry Suiter – Xpedition 3D Designer

Jerry Suiter – Xpedition 3D Multi-board

Jerry Suiter – Searching Mentor 3D Library

Jerry Suiter – Component Model Import

Pat Carrier - Making Analysis More Accessible

Steve Herbstman – Innovative Component Planning and Placement

Charles Pfeil – Routing Automation (A Breakthrough in Productivity)

SupportNet Video Featurettes for xPCB

Minoru Ishikawa – Concurrent Design Verification with HyperLynx DRC

Minoru Ishikawa – How to Efficiently Use HyperLynx DRC in Your Design Flow

Julian Coates – Lean NPI Integrated into Xpedition Flow

VX Xpedition Enterprise 64-bit Flow

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