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1、,第3节PCB设计的整体流程,QQ群：17027510 北方科技,课件密码：25446358,PCB design process,Transferring design information to the PCB,Resolving synchronization errors,Missing component footprints.Footprint pin numbers not matched to schematic pin numbers.Components not matching(Figure 4).To resolve errors,perform a Show Dif
2、ferences,then in the Differences dialog click theExplore Differences button.,PCB Panel:PCB PCBBrowse mode selection listComponents(and then Component Classes)Nets(and then Net Classes)From-To EditorSplit planesDesign rules&design rule violations.Differential pairsPolygonsHole sizes,Using the PCB Pan
3、el,Project Navigation and Cross Probing,Navigation这里要是看不到的时候可以右键 compile all,Cross probing,Cross probing from the schematic to the PCBSplit verticle/merge all,Design Rules,Adding design rulesDesign Rules.,Design rules concepts,Object setRule Query,Setting the rule priority,How rules are checked(1),O
4、nline DRC,How rules are checked(2),DRCRules to Checkpage of the Design Rule Checker dialog,as shown in Figure 8(select Tools Design RuleCheck from the menus).Running a DRC,Classes and Rooms,Object classesDesign Classes.Using classes in design rules,Rooms,模块化设计布局方便,Classes and Rooms,Defining RoomsDes
5、ign Rooms Moving components into a roomInteractive Placement Arrange Within Room Moving rooms,Component unionsComponent Placement gridBoard Option快捷键“o”,Placement（布局）,Interactive Placement commands,Alignment commandsComponent Placement commandsTools Component PlacementArrange Within RoomArrange With
6、in RectangleArrange Outside BoardReposition SelectedComponents,Routing and Polygons,RoutingInteractive routingInteractive RoutingDifferential Pair Routing必须需要定义差分对,Interactive Routing,Pressing the TAB key will open the Interactive Routing for Net dialog,Automatic loop removalDragging tracksDragging
7、Arcs练习布线,Pin and part Swapping,Differential Pair Interactive Routing,Multi trace routing,There is two ways of using the multi trace routing,by dragging multiple track ends,or by placing multiple traces.Place Multiple Traces.Tab键Press the Shift+F1 keys for a list of interactive shortcuts.,Interactive
8、 Length Tuning,Tools Interactive Length Tuning,Adding and removing teardrops,泪滴Tools Teardrops,18.1.8 Adding and removing teardrops,泪滴Tools Teardrops,Automatic routing,Running the AutorouterAuto Route AllAuto Route Stop,BGA Escape routing,BGA逃逸布线Component Actions Fanout ComponentNote how the escape
9、route feature presents each connected pad as an accessible route outsidethe edge of the BGA.Note:The most common reason escape routing fails is because the vias will not fit between the BGA pads.Ensure that there is a suitable Routing Via Style design rule configured to allow suitably small vias to
10、be used for escape routing.,Polygons and the Polygon Manager,敷铜Place Polygon Pour一定是封闭的形状改变敷铜的属性可以双击选中后也可改变敷铜的形状注意用Shift+Space敷铜的时间很长，完成后有时需要刷新“End”,Assembly Variants,变量集合Project Assembly Variants,Bill of Materials,材料单Reports Generating a Bill of Materials,Smart PDF,File Smart PDF,Viewing a Board in 3D,To view the board in 3D,press the 3 shortcut key.Press the 2 shortcut to change back to the traditional 2D display mode.Note:Viewing the board in 3D requires a graphics card that supports DirectX 9 or better,and Shader Model 3 or better.,Thank You!,QQ群：17027510 北方科技,程序密码：47538754,
