HyperLink_Programming_and_Performance_consideration(Eng)

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1、ApplicationReportLit.Number–July,2012HyperLinkProgrammingandPerformanceconsiderationBrightonFengCommunicationInfrastructureABSTRACTHyperLinkprovidesahighest-speed,low-latency,andlow-pin-countcommunicationinterfacebetweentwoKeystoneDSPs.TheHyperLinkuser’sguidedescribesalotaboutthese.Thisa

2、pplicationnoteprovidessomecomplementaryinformationabouttheprogrammingoftheHyperLink.ThisapplicationreportalsodiscussestheperformanceofHyperLink,providesmeasuredperformancedataachievedundervariousoperatingconditions.SomefactorsaffectingHyperLinkperformancearediscussed.Examplecodeisprovide

3、dalongwiththisapplicationnote.1OverwritethistextwiththeLit.NumberContents1Introduction..................................................................................................................................32HyperLinkconfiguration................................................

4、..............................................................32.1Serdesconfiguration...............................................................................................................32.2HyperLinkmemorymapconfiguration.........................................................

5、...........................43HyperLinkperformanceconsideration.......................................................................................83.1PerformanceformemorycopyoverHyperLink.......................................................................83.2LatencyforDSPcoreaccess

6、remotememorythroughHyperLink..........................................93.3OverheadofDMATransferoverHyperLink..........................................................................123.4DelayforHyperLinkinterrupt...........................................................................

7、.....................134ExampleProjects.......................................................................................................................13References......................................................................................................