基于eoc物理层芯片的时钟树综合设计

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1、北京．[业大学工学硕士学位论文．Ⅱ．ABSTRACTAbstractThispaperisdiscussinghowtoachieveamoreoptimizedimplementationoftheclocktreesynthesissolutioninthephysicaldesignoftheEOC(EthemetOVerCoax)physicallayerchipBES7000．EOCisatechnologyofethemetdatatransmissionovercoax．Itisusedinthehighpermeabil

2、ityandhighbandwidthaccesstointeractivetelevisionservicesinthefuture．Clocktreesynthesisisaveryimportantstepinthehighperformancechipdesign．Therapiddevelopmentofhigh—speed，lowpowerconsumption，high-performanceofVLSIhasputforwardhigherrequirementsforclocktree．Themainobjective

3、sofclocktreesynthesisistominimizetheclockskewandphasedelaytoprovidemaximumservicesfortimingclosure，meanwhile，tominimizepowerconsumption，noiseandcouplingbetweenconnectionsoftheclocknetwork．Agoodclocktreedesigndirectlyplaysacrucialroleinpower,area，routingcongestionandcross

4、talkoftheentiredesign．Thisthesisdidadeepresearchinareasofthemostcriticalissuesofclocktreesynthesis．Firstofa11．aschipdesignscontinuetoraisethehighestworkingfrequencyandthedesignscalehasbeenincreasedcontinually,accompaniedbycrosstalkcouplingeffectsbetweentheconnectionsunde

5、rdeepsub-micronprocess，therequirementoftimingclosureisincreasinglydifficulttobemet．Andtheclocktreesynthesisisthemostcriticalfactorintimingclosure．Secondly,toconsiderthetestofmassproduction，inadditiontothenormalfunctionmodeotherthantestpatternsisthedesignrequirementaswell

6、，twomodelsneedtomeettimingclosureatthesametime．Italsomakesclocktreesynthesispresentmajorchallenges．Moreover,withaccesstodeeperprocessnodes，thecrosstalkeffectsinclockroutinghaveaseriousimpactontheclocktreeandtimingclosureinchipdesign．ThedesigniscompletedontheEDAplatformof

7、AstrofromSynopsys，basedonBES7000chipclocktreedesign．Firstitanalysesthebasicprinciplesofclocktree，andplansforclocktreesynthesisbasedontheflowofphysicaldesign，setclockportandclocktreesynthesisparametersaccordingly．Thenitimplementsthebasicclocktreesynthesisbasedontheclockst

8、ructure，analysestheresultoftimingclosure，sumsupthespecialproblemsBES7000chips．Andtryavarietyofstrategie