Allegro设置差分线和等长的方法

1、一、设置差分线的方法方法一：1、LogicfAssignDifferenttialPair2、在弹出的对话框里选择需要添加的差分对,点击Add按钮,即可添加方法二：1、SetupYonstraintsElectricalFileEcitViewAddpisplay|fetMphapeLogicPlaceFlowPlsn.RouteAnalynBManufacture二01:LjDG:Xa虬鱸建弍旻卽U*i绥HLI；搐Modes.E耳Con&treintManager.IBDesignParameters.AppliceitioHModerGrids.ChangeDrawingOrigin色Cr

2、oss-section.UnuaedPadsSuppression.EmbeddedLayeSetup.Subclasses.,.Materials.B/BViaDefinicions0ErsbleOn-LineDRC0ErableDatatipsConstraintsPropertyDefinitions.DefineLists,.AreasOutlinesSTDesignSetup,.r诵SIDesignAudit.DatatipCustomization.UserPreferences.Electrics.Physical.Spacing.SameNetSpacing.PhysicalN

3、etOverrides.SpacirgNetOverrides.豳DFAConstraintSpreadsheet.2、选择Net,然后在ObjectSfCreateDifferenttialPair田田RolBSHAddtoSPinPair.NetNet彳IJ也蜃RolRefereiElmetricsReport.bjectgName?SAlliDeselectp227-aPIIPCMAIH1V0-PCD1SD(6)SDLVDS(15)DDR-A(24)pDR-DO(11DIFF90blFFPAIRSPIFFPAIFKNetClass.Cla55-Class.Region.Region-Cl

4、ass.Region-Cla5&-CIass.NetGroup.MatchCroup.RafisnestBundle.ElectricalCSet.PhysicalCSet.Spacing匚Set.SameNetSpacingCSet.&EletriSelectandShowElementExpandAllWaiveRestoreDDR-D1(11)DQS1NGrouprnembers.RemoyeonstraintSetReferences.Changealldusignunitattributes.DiffeKentisIPair.ExpandNum+Num-Rename.DeleteCr

5、eate自“0NettSigiPl-CTim1g1吐EditObjectsColumnViewAnalyzeAuditTook石WindowHelpFilter.:WorksheetseleFiltersre-apply：FCF1AIJT1VU-FCB166lelect3、在弹出的对话框里选择需要添加的差分对，点击Create按钮，即可添加设置完差分线对后，需要设置其约束规则，方法如下：1、初始默认的有一个DEFAULT规则,右击DEFAUIT,选择Create-PhysicalCSet2、弹出一下对话框,在PhysicalCSet栏写上规则名称,建议根据差分线的阻抗描写,点击OK,这里已经写

6、好,规则名称为：DIFF100,就可以看到多了一行PCSCreatePhysicalCSetObjects-TypeSNameADsn3FC2607PAM2ML1PCS田DEFAULTPCS田3、设立好规则后就可以在这项规则里设置线宽间距等参数了4、在Net栏看到有已经设好的差分线,在RefereneedphysicalCSet选项下选择刚刚设好的规则DIFF100ObjectsReferencedPhysicalCSetLiinVMinTypeSN-ameirnm左i-Osn3FC2W7PAFW23C1WDEFAULI0.20WOPrLVDSCLKMFF1OT0.1270DPr|4|LVD5

7、0DEFAJLT0.1270EJPrT|LVDS1DIFF1IM)G.1270DPr41LVD52(Clear)|0.1270DPrHLVDSJDimoo0.1270NetDEFAULT0.3OT0NetDEFAULT0.20&0NetADCCH1DEFAULT0.30&0NetAGNDDEFAULT0.20&0*规则设置中各个项目的含义*LineWidth（设置基本走线宽度）Min：最小线宽Max：最大线宽，写0相当于无限大LineWidthMinMaxmmmm*&Q.20DO-O.QDO-QO.OCKW0.1270O.OTWNeck（neck模式，一般在间距很小的时候用到）MinWidth

8、:最小线宽MaxLength：最大线长NeckMinWi-dthMaxLngttimmmm.Q.1270-0.000-00.12700.O.WWDifferentialPair（差分线设置,单端线可不写）MinLineSpacing：差分对的最小线间距PrimaryGap：差分对理想线间距NeckGap：差分对最小允许线间距（+）Tolerance：差分线允许的误差+（-）Tolerance：差分线允许的误差-Vias（过孔选择）ViasVIASBGA-FULLVIAVIAS-BGA-FULLiVIAVIAS-BGA-FULLBBViaStagger（设置埋/盲孔的过孔间距）Min:最小间距M

9、ax：最大间距BBVia恤習直弓MinMaxmmmm0.1270-ODOM0.12TDO.WMM)0.1270O.WWAllowPad-PadConnect:/Etch:/Ts:/AllowPad-PadConnectLtctiTsALLALLOWEDTRUEANYWHEREALLALLO.TRUEAHWVHEREALLALLO.TRUEANYWHERE示意图：PtiTTKllANwkgapeckPiimuryIinewidth二、设置等长1、进入规则设置页面ElectricalfNetfRoutingRelativePropagationDelay1-FileEditObjectsColum

10、nViewAnalyzeAuditToolsWindowHelp:SB|:%IElectrical勺“jNetHRelafivePropagatiDnDellay:Worksheetselector2LElectricalConstraintSetSignalIntegrity囱囉Timing回囉Routing!亩4AllConstraintsSSignalIntegrity由瞳Timing白囉RoutingImpedanceMin/MasPropagationDelaysTotalEtchLengthDifferentialPairObjectsReferencedElectricalCSe

11、tTypeS!NairneDsn3testzoizoaNetVDD1IVflNetVDDPLL2V#NetVDD1O2VSNetVAA2V8NetVAAPIX2VSNetSPCLKLVDSPONetSPCLKLVDSNONetSENSDRRSTNetSENSORCLKNetSDLVDSPJNetSDLVDSP2NetSDLVDSP1NetSDLVDSP0NetSDLVDSNJNetSDLVDSN2NetSDLVDSN1NetSDLVDSN0NetPIR_OITT2、选中需要设置等长的网络,右击,选择CreateMatchGroupAnalyzeCtrl+FAddtoF2NetSPCLKLVDS

12、P0SENSORRSTSENSORCLKSPCLKLVDSN0SDLVDSP3LVDSPSDLVDSP1LVDS0LVDSLVDSSDLVDSN1SOLVDSN03test2?01703VDD1VSVDDPLL2VSVDDIO2V3VAA2V8ObjectsReferencedElectricallCSetPinPairsN1677S145NameVAAPIX2VSPIIROUTN1677S3271N16B94797N1fiB642W)-N16552014N16845B16N1fiB0401lN16B040-QftN16B03976N1fiB03975N1679O1S4NW7OT1S2N167

13、5705N1677SW4N1677S412N1677&26BCreateSigXpIo巳mmmmSelectSelect已ndShowElementDeselect%Find.Bookmark.ExpandExpandAllCollapseNum+RemoveDeleteConstraintSetReferen匸esR旦name.NetClass.MatchGroup.INetGroup.PinPair.DifferentialPair.ElectricalCSet3、更改组名称4、设置好后,会显示MGrp,如下图。这样等长的线组就设好了,接下来是设置等长的约束规则ObjectsReferen

14、cedElectricalCSetPinPairssADsn3tes120170fiMGrpSEHSORLVD5(10)|Allirivers/AIIRece.NetSPCLKLV0SP0AllDriwers/AIIReceiversNetSPCLKLVOSWOAllDriwers/AIIReceiversNetSDLVD5P3AllDriwers/AIIReceiversNtSDLVDSP2AllDriyers/AIIReeeiverENtSDLVDSP1AllDriyers/AIIReeeiverENtSDLVDSP0AllDriyers/AIIReeeiverENtSDLVDSN3All

15、Driyers/AIIReeeiverENtSDLVDSN2AllDriyers/AIIReeeiverENtSDLVDSN1AllDriyers/AIIReeeiverENtSDLVDSN0AllDriyers/AIIReeeiverENtVDD1VSNtVDDPLL2V8NtVDD_IO_2VaDelta:Tolerancens5、在Delta:Tolerancel1栏设置好长度误差范围6、默认的是以时间和百分比为单位，我们改成长度单位，如下图ObjectsRffferen-cedElectrEcafCSecPinPairsPtti阿割R日阳ikPirHPin2tellaToferance

16、TvpeSNflmeniimjTliTinsaX1.Xk1XXEfenjMGrpS5tNWRLVE&(10AllISTjeniAll-Rece.iGlobalbo.i0MMrU.254IMM冋S0LVD5P2AllAllRace.Globaltl0MM：tt.254I.H.1NeiSCLLVDS_N_OAWDriversAlliRece-.rGlbbfl.1flMMI&154IWMNetNetVEPLL2V7、然后设置一个网络为目标网络,在网络Delta:Toleranee栏处右键选择Setastarget,如下图ReTBrertced：EfecirtcalCSetPHiDelavReflfr

17、veDe.PinFairsPin1Fin25coeDelrt3：Ta(eranceAdTypesNametfiflLIiruiL-|&-*DsnRiesi?17DflUGp日SENSORLVDS(1fl)AltDnv?rsAIRece.GtobflDQPulU.254MII.1Nel5PCLK_LVDS_P_0All：DriverisMRee&.itGmaENetSPCLK-LVDS-N-ffAll.DnveraAltRec&.GLOWAnalyzeNet5DLVD5_P_3ahDnveraiAliRecB,.rGmanGoEosoditeNet5D_LVD5_P_2AllDnversAHRe

18、ce.PGkKNiliNe1SDLVDSP1AllDrYVErs/AIRece.GbabaENet5DLVDSPOAllDriruvrsfAlRoc巳GtobaEChange.Net5DLVDSH$All：DriurisMReee.itGmaEFormula,.Net5D_LVD5_N_2All.DnverarAltRece.GLOWNet5D_LVD5_H_1AinonversrAliiRece.PkXNSU&ependenci=s.Net$D_LVD5_H_-0AllDnversAHRece.rGkMliNe1VDDJViaCalculateNetVDDIX2V8NetvroK)2v&Be

19、tassrgetNetVAA2VBClearNetvaa_pik_zvb!Net5PCLKLWSPi：l111Ne1S.PCLKLUDSHiI_uiLlrl+XNetSENSORRSTCopVC&l+CNet&ENSOR_CLKNetSD.LVDSJPl削PfiiSfeC&I-fVNet5D_LVD5_F_2Net5DLW5P1PasteSpecial.,rNe1SDLVD&PNetSDLVD&M3Informatinn.Net&D_LVD&_N_28最后打开检查模式,在Analyze菜单选择AnalysisModes,弹出以下对话框,打开Relativepropagationdelay三、过

20、电阻等长设置如下图这种等长：caj.Jdlji亠O工H岷恤OCNO寸OH寸CNO寸04e旺、stf丽密CNfflffiopowmUQSgw*H4e旺、n1234567233333333、选中一个电阻，选择CreateModel4、进入下一步,默认，点击OK5、进入下一步,默认,点击OK（注意：Value值不能为0）6、依次把需要建立模型的电阻设好7、这里可以看到我们刚刚设置好的XNet御海厂:Worksheetselector耳x爭ElectiuaJ|El-feElectricalConstraintetrh-OSignalIntegrity由雇TimingF+l-GR.outing由雇All

21、Consirsints“心Net田雇SignalIntegrityF+l-CTiming白薩R.cruting”BWiring”SVias“SImpedance”SlYlin/MaxPropagationDelayi“STotalEtchLengthi”SDi-ff&rentialPair3漏口乐3j臺阉Relative-Pro-pagstionDelayObjectsTypesNameANelIIRCTLNeliiRcirrNelLEHNelLED-/XNetLVDSCBOXNetLVDSCPaXNetLVDSWDXNetLVDSW1XNetLVDSW2XHetLVDSW3XHetLVDSP

22、OXHetLVDSP1XHetLVDSP2|KN-etLVDS_P_3NelN1G77&14&NelN1G77&2fifiNelN1G77B412NelN1G77&M4teSt201T08FileEditObjectsColumnViewAn.alyreAuditToolsWindowHelp8选中网络,右击,CreatePinPair,创建PinPairXHetLVDSCN01XHetLVDSCPOAnalyzeXNetLVDSNOXHetLVDSN1SelectXHetLVDSN2XHetLVDSN3SelectandShowElementXHetLVDSPOXHetLHDS.P.qDes

23、electXNetLVDSPm2rV.XHetLVDSP3tnFind.Ctrl+FNetN1677E145Bookmark.卜NetN1677S26fiNetN1677S412NetN1677S&64ExpandNuirmi+-NetN167SS705ExpandAllNetN116735963NetN1679O1Si2Collapsel*Jum-NetN167W1S4NetN16&03975CreateNetCls.NetN163039T6NetN1l680400-ftAddto.kMatchGrouc.NetN1l68040ft1NetN16B45B16RemoveNetGroup.Ne

24、tN16852014INetN16B&42?04Rename.F2FinPair.NetN1689479-7DifferentialPair.NetN1677S3271Delete-NetPIIKOUTFlecirriralCSet.NetSEhlSORCLKConstraintSetReferences.NetSEhlSORHSTNetVAA.PIX2V&SigXplorer,.NetVAA.2VS10、依次创建其他XNet的PinPairXHet曰LV&SIJOPPrU5.B4J15.&XFJet日LVUSPfrPPr115.A4;J15日LVDSB0PPrU5.B2;J15.15XNet

25、曰LVDSB1PPrU5.B3:J15.12met曰LVDSW2PPrU5.B5J15.&XNet曰LVDSK3PPrU5.B6J15Jimet曰LVDSP0PPrU5.A2J15.14XHet日LV&SP1PPrU5.A3J15.11XNut日LVDSP2PPrU5.A5J15.&met日LVDSP3PPrU5,A6;J15.211、选择这些PinPair,右键创建MatchGroupNumoreir.0田LVDSFJ0XNetXNetXNetXNetXNetXNetXNetXNetXNet田LVDSCP|田LVDS田LVDS田LVDS田LVD5田LVD5PSLVD.P田LVDQN16r72ft&N16775412N16r?-BSS4N1676705N167653N16TW132N167M1S4N16S03975N16S03976N16804009N16804081N16S45S18N16S52014N16SE4200N1SS94797N1677