标签: megacore

SerialliteMegaCoreFunctionUserGuide……

ViterbiCompilerMegaCoreFunctionUserGuide……

UpdatingSimulationModelsforthePOS-PHYLevel4MegaCoreFunction……

【应用手册】AN541:SerialLiteIIHardwareDebuggingGuideTheSerialLiteIIMegaCore®functionisalightweight,chip-to-chipprotocolsuitableforbothpacketandstreamingdatainchip-to-chip,board-to-board,andbackplaneapplications.Itofferslowprotocoloverhead,lowgatecount,andminimaldatatransferlatency.Itprovidesreliable,high-speedtransfersofpacketsbetweendevicesoverseriallinks.TheSerialLiteIIprotocoldefinespacketencapsulationatthelinklayer,anddataencodingatthephysicallayer.Theprotocalintegratestransparentlywithexistingnetworks,withoutsoftwaresupport.TheSerialLiteIIMegaCorefunctionprovidesasimpleandlightweightwaytomovedatafromonepointtoanotherreliablyathighspeeds.Itcomprisesaseriallinkofupto16bondedlaneswithlogictoprovideanumberofbasicandoptionallinksupportfunctions.TheAtlanticinterfaceistheprimaryaccessfordeliveringandreceivingdata.AN541:SerialLiteIIHardwareDebuggingGuideAugust2008AN-541-1.0IntroductionTheSerialLiteIIMegaCorefunctionisalightweight,chip-to-chipprotocolsuitableforbothpacketandstreamingdatainchip-to-chip,board-to-board,andbackplaneapplications.Itofferslowprotocoloverhead,lowgatecount,andminimaldatatransferlatency.Itprovidesreliable,high-speedtransfersofpacketsbetweendevicesoverserial……

【应用笔记】PCIExpress宏功能函数的外部PHY支持(ExternalPHYSupportinPCIExpressMegaCoreFunctions)PCIExpress编译器产生用户自定义的PCIExpressMegaCore函数，使得你能够使用它来设计PCIExpress终点。ThePCIExpressCompilergeneratescustomizedPCIExpressMegaCore®functionsthatyoucanusetodesignPCIExpressendpoints.ThePCIExpressMegaCorefunctionsarecompliantwithPCIExpressBaseSpecificationRevision1.1orPCIExpressBaseSpecificationRevision1.0a.Thefunctionsimplementallrequiredandmostoptionalfeaturesofthespecificationforthetransaction,datalink,andphysicallayers.ExternalPHYSupportinPCIExpressMegaCoreFunctionsMay2007,ver.1.0ApplicationNote443IntroductionThePCIExpressCompilergeneratescustomizedPCIExpressMegaCorefunctionsthatyoucanusetodesignPCIExpressendpoints.ThePCIExpressMegaCorefunctionsarecompliantwithPCIExpressBaseSpecificationRevision1.1orPCIExpressBaseSpecificationRevision1.0a.Thefunctionsimplementallrequiredandmostoptionalfeaturesofthespe……

【应用笔记】DDR和DDR2SDRAM纠错码参考设计(DDRandDDR2SDRAMECCReferenceDesign)本应用笔记描述了一种使用AlteraDDR和DDR2SDRAM控制器MegaCore功能函数实现的纠错码(error-correctingcode,ECC)模块。Thisapplicationnotedescribesanerror-correctingcode(ECC)blockforusewiththeAlteraDDRandDDR2SDRAMcontrollerMegaCorefunctions.AlteraalsosuppliesanECCreferencedesign,whichusestheECCblockwiththeDDR2SDRAMcontrollerMegaCorefunctionandaMicronMT9HTF3272AY-53EB3DIMMat200MHz.ThereferencedesignrunsonaStratix®IIHigh-SpeedDevelopmentBoard.DDRandDDR2SDRAMECCReferenceDesignVersion1.0,June2006ApplicationNote415IntroductionThisapplicationnotedescribesanerror-correctingcode(ECC)blockforusewiththeAlteraDDRandDDR2SDRAMcontrollerMegaCorefunctions.AlteraalsosuppliesanECCreferencedesign,whichusestheECCblockwiththeDDR2SDRAMcontrollerMegaCorefunctionandaMicronMT9HTF3272AY-53EB3DIMMat200MHz.ThereferencedesignrunsonaStratixIIHigh-SpeedDevelopmentBoard.……

【应用笔记】AN328:StratixII、StratixIIGX、andArriaGX器件和DDR2SDRAM的接口(AN328:InterfacingDDR2SDRAMwithStratixII,StratixIIGX,andArriaGXDevices)本应用笔记提供关于DDR2和Stratix®II、StratixIIGX和Arria®GX接口的信息ThisapplicationnoteprovidesinformationaboutinterfacingDDR2SDRAMwithStratix®II,StratixIIGX,andArria®GXdevices.ItincludesdetailsaboutsupportedmodesandguidelinesfordesigningwiththesedevicesanddescribesAltera’srecommendeddesignflowforimplementingaDDR2SDRAMmemoryinterfaceonaStratixII,StratixIIGX,orArriaGXFPGA.AN328:InterfacingDDR2SDRAMwithStratixII,StratixIIGX,andArriaGXDevicesOctober2009AN-328-6.0IntroductionThisapplicationnoteprovidesinformationaboutinterfacingDDR2SDRAMwithStratixII,StratixIIGX,andArriaGXdevices.ItincludesdetailsaboutsupportedmodesandguidelinesfordesigningwiththesedevicesanddescribesAltera’srecommendeddesignflowforimplementinga……

基于AlteraMegaCore实现FFT的方法基于AlteraMegaCore实现FFT的方法0引言FFT（快速傅里叶变换）是计算离散傅里叶变换（DFT）的高效算法，它把计算N点DFT的乘法运算量从N2次下降到N/2log2N次。FFT的出现对数字信号处理的发展起着至关重要的作用，它可应用于傅里叶变换所能涉及的任何领域，为广泛应用数学方法处理数字信号开辟了新局面[1]。传统的FFT实现方法是通过软件（软件编程）和硬件（专用芯片ASIC）这两种方法来实现，而近年来，FPGA发展十分迅速，这给FFT设计提供了一个新思路[2]。为了更好地满足设计人员的需要，各大公司相继推出了IP模块，本文提出了一种采用Altera公司的IPCoreFFTMegaCore来实现FFT的简单方法。1FFTMegaCore核的性能Altera公司的FFTMegaCore是一个高性能、高参数化的快速傅里叶变换处理器，可以高效的完成FFT和IFFT运算，支持的器件系列包括StratixⅡ、StratixGX、StratixⅡGX、Stratix、Cyclone、CycloneⅡ以及CycloneⅢ等，采用基2/4频域抽取（DIF）FFT算法，运算长度从64到16384，使用嵌入式内存，系统最大时钟频率大于300MHz。FFT处理器可以设置两种不同的引擎结构：四输出和单输出，结构图如图1和图2所示[3]。为了增加FFT兆核函数的总吞吐量，也可以在一个FFT兆核函数变量中使用多个并行引擎。复取样数据X[k，m]从内部存储器并行读出并由变换开关(SW)重新排序，排序后的取样数据由基4处理器处理并得到复数输出G[k，m]，由于基4按频率抽选(DIF)分解方法固有的数字特点，在蝶形处理器[4]输出上仅需……