1、一、設置差分線的方法方法一：1、LogicfAssignDifferenttialPair2、在彈出的對話框里選擇需要添加的差分對,點擊Add按鈕,即可添加方法二：1、SetupYonstraintsElectricalFileEcitViewAddpisplay|fetMphapeLogicPlaceFlowPlsn.RouteAnalynBManufacture二01:LjDG:Xa虬鱸建弍旻卽U*i綏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誦SIDesignAudit.DatatipCustomization.UserPreferences.Electrics.Physical.Spacing.SameNetSpacing.PhysicalN

3、etOverrides.SpacirgNetOverrides.豳DFAConstraintSpreadsheet.2、選擇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、在彈出的對話框里選擇需要添加的差分對，點擊Create按鈕，即可添加設置完差分線對后，需要設置其約束規(guī)則，方法如下：1、初始默認的有一個DEFAULT規(guī)則,右擊DEFAUIT,選擇Create-PhysicalCSet2、彈出一下對話框,在PhysicalCSet欄寫上規(guī)則名稱,建議根據(jù)差分線的阻抗描寫,點擊OK,這里已經(jīng)寫

6、好,規(guī)則名稱為：DIFF100,就可以看到多了一行PCSCreatePhysicalCSetObjects-TypeSNameADsn3FC2607PAM2ML1PCS田DEFAULTPCS田3、設立好規(guī)則后就可以在這項規(guī)則里設置線寬間距等參數(shù)了4、在Net欄看到有已經(jīng)設好的差分線,在RefereneedphysicalCSet選項下選擇剛剛設好的規(guī)則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*規(guī)則設置中各個項目的含義*LineWidth（設置基本走線寬度）Min：最小線寬Max：最大線寬，寫0相當于無限大LineWidthMinMaxmmmm*&Q.20DO-O.QDO-QO.OCKW0.1270O.OTWNeck（neck模式，一般在間距很小的時候用到）MinWidth

8、:最小線寬MaxLength：最大線長NeckMinWi-dthMaxLngttimmmm.Q.1270-0.000-00.12700.O.WWDifferentialPair（差分線設置,單端線可不寫）MinLineSpacing：差分對的最小線間距PrimaryGap：差分對理想線間距NeckGap：差分對最小允許線間距（+）Tolerance：差分線允許的誤差+（-）Tolerance：差分線允許的誤差-Vias（過孔選擇）ViasVIASBGA-FULLVIAVIAS-BGA-FULLiVIAVIAS-BGA-FULLBBViaStagger（設置埋/盲孔的過孔間距）Min:最小間距M

9、ax：最大間距BBVia恤習直弓MinMaxmmmm0.1270-ODOM0.12TDO.WMM)0.1270O.WWAllowPad-PadConnect:/Etch:/Ts:/AllowPad-PadConnectLtctiTsALLALLOWEDTRUEANYWHEREALLALLO.TRUEAHWVHEREALLALLO.TRUEANYWHERE示意圖：PtiTTKllANwkgapeckPiimuryIinewidth二、設置等長1、進入規(guī)則設置頁面ElectricalfNetfRoutingRelativePropagationDelay1-FileEditObjectsColum

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

11、tTypeS!NairneDsn3testzoizoaNetVDD1IVflNetVDDPLL2V#NetVDD1O2VSNetVAA2V8NetVAAPIX2VSNetSPCLKLVDSPONetSPCLKLVDSNONetSENSDRRSTNetSENSORCLKNetSDLVDSPJNetSDLVDSP2NetSDLVDSP1NetSDLVDSP0NetSDLVDSNJNetSDLVDSN2NetSDLVDSN1NetSDLVDSN0NetPIR_OITT2、選中需要設置等長的網(wǎng)絡,右擊,選擇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、更改組名稱4、設置好后,會顯示MGrp,如下圖。這樣等長的線組就設好了,接下來是設置等長的約束規(guī)則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欄設置好長度誤差范圍6、默認的是以時間和百分比為單位，我們改成長度單位，如下圖ObjectsRffferen-cedElectrEcafCSecPinPairsPtti阿割R日陽ikPirHPin2tellaToferance

16、TvpeSNflmeniimjTliTinsaX1.Xk1XXEfenjMGrpS5tNWRLVE&(10AllISTjeniAll-Rece.iGlobalbo.i0MMrU.254IMM冋S0LVD5P2AllAllRace.Globaltl0MM：tt.254I.H.1NeiSCLLVDS_N_OAWDriversAlliRece-.rGlbbfl.1flMMI&154IWMNetNetVEPLL2V7、然后設置一個網(wǎng)絡為目標網(wǎng)絡,在網(wǎng)絡Delta:Toleranee欄處右鍵選擇Setastarget,如下圖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最后打開檢查模式,在Analyze菜單選擇AnalysisModes,彈出以下對話框,打開Relativepropagationdelay三、過

20、電阻等長設置如下圖這種等長：caj.Jdlji亠O工H岷恤OCNO寸OH寸CNO寸04e旺、stf麗密CNfflffiopowmUQSgw*H4e旺、n1234567233333333、選中一個電阻，選擇CreateModel4、進入下一步,默認，點擊OK5、進入下一步,默認,點擊OK（注意：Value值不能為0）6、依次把需要建立模型的電阻設好7、這里可以看到我們剛剛設置好的XNet御海廠: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漏口樂3j臺閹Relative-Pro-pagstionDelayObjectsTypesNameANelIIRCTLNeliiRcirrNelLEHNelLED-/XNetLVDSCBOXNetLVDSCPaXNetLVDSWDXNetLVDSW1XNetLVDSW2XHetLVDSW3XHetLVDSP

22、OXHetLVDSP1XHetLVDSP2|KN-etLVDS_P_3NelN1G77&14&NelN1G77&2fifiNelN1G77B412NelN1G77&M4teSt201T08FileEditObjectsColumnViewAn.alyreAuditToolsWindowHelp8選中網(wǎng)絡,右擊,CreatePinPair,創(chuàng)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、依次創(chuàng)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、選擇這些PinPair,右鍵創(chuàng)建MatchGroupNumoreir.0田LVDSFJ0XNetXNetXNetXNetXNetXNetXNetXNetXNet田LVDSCP|田LVDS田LVDS田LVDS田LVD5田LVD5PSLVD.P田LVDQN16r72ft&N16775412N16r?-BSS4N1676705N167653N16TW132N167M1S4N16S03975N16S03976N16804009N16804081N16S45S18N16S52014N16SE4200N1SS94797N1677