Calibre PERC_AppNote_10655软件笔记.pdf

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1、AppNote10655ProgrammableElectricalRuleChecking(PERC)By:DinaMedhatLastModified:28-Oct-2008©CopyrightMentorGraphicsCorporation1995-2008.Allrightsreserved.ThisdocumentcontainsinformationthatisproprietarytoMentorGraphicsCorporation.Theoriginalrecipientofthisdo

2、cumentmayduplicatethisdocumentinwholeorinpartforinternalbusinesspurposesonly,providedthatthisentirenoticeappearsinallcopies.Induplicatinganypartofthisdocument,therecipientagreestomakeeveryreasonableefforttopreventtheunauthorizeduseanddistributionofthepropr

3、ietaryinformation.TrademarksthatappearinMentorGraphicsproductpublicationsthatarenotownedbyMentorGraphicsaretrademarksoftheirrespectiveowners.IntroductionReliabilityisagrowingconcernforintegratedcircuitdesigners.CalibrePERC(ProgrammableElectricalRuleCheckin

4、g)canaddressreliabilitychallengesthatariseduringthecircuitandelectricalverificationprocess.PERCisspecificallydesignedtoperformelectrostaticdischarge(ESD)andmultiplepowerdomainchecks.CalibrePERCallowsyoutocustomizeERCchecksattheschematiclevelaswellasgeometr

5、icalandelectricalchecksatlayout,whichgivesyoumorepowerandflexibilitytohandleemergingcircuitverificationdemandsfordesignimplementation.ESD,advancedERC,andmultiplepowerdomainsaretopissuesonalonglistofcomplexnewgeometricalandelectricalverificationrequirements

6、.Alloftheseadvancedrequirementscanonlybedescribedbyatopologicalviewratherthansingledevice/pintonetrelation.Atopologicalviewincorporatesmanylayout-relatedparametersaswellascircuitry-dependantchecks.PERCintheDesignFlowPERCallowsyoutoverifyboththesourceandthe

7、layoutsidesofadesign.Itcanworkinhierarchicalmodetoprovidefastspeedandmaximumcapacity.Moreoveritcanperformnetlisttransformation:devicereduction,logicinjection,andgaterecognition.InputsforPERCare:1.Rulefileincluding:a.TVFFunctionstatementcontainingthePERCrul

8、echeckproceduresb.SVRFStatementsi.PERCcommands:PERCREPORT,PERCNETLIST,PERCPROPERTY&PERCLOADii.SomeLVScommands2.SPICEnetlist(orGDSIIlayoutdatabase,fromwhichtheSPICEnetlistextractorgeneratesanetlist)Outputsfrom