1、內(nèi)蒙古工業(yè)大學(xué)碩士學(xué)位論文基于PCI總線的高級在軌系統(tǒng)幀同步信號發(fā)送器的設(shè)計姓名：蘇鵬沖申請學(xué)位級別：碩士專業(yè)：計算機應(yīng)用技術(shù)指導(dǎo)教師：李維忠20060601IIAbstractThispaperparticularlydescribesthedesignimplementationofAOSSynchronousTransmitterbasedonthePCIBus.Thebackgroundofthesubjectisthatthe
2、CCSDS(ConsultativeCommitteefSpaceDataSystems)hasdesignedAOS(AdvancedbitingSystem)fmannedspaceflight.ByusingAOSwhichcantransmitdatabidirectionallysymmetrilybetweenthespacesystemthegroundsystemtoservefcustomers.Nowadayseac
3、hspaceflightcourtryisgraduallyadoptingtheAOSdatastard.TherefetheresearchoftheAOSkeyequipmentsSynchronousTransmitterisverysignificant.SynchronousTransmitterwksontheAOSphysicslayerwhichistakingVCA(VirtualChannelAccessingla
4、yer)sVCPDU(VirtualChannelProtocolDataUnit)withtheCCSDSprovisionof4bytessynchronouscode1ACFFC1Dthensendthedataoutserially.BecausethesatellitewirelesschanneladopttheQPSKasthemodulateddemodulatedwaytheexptofSynchronousTrans
5、mittershouLD#bethreelinesplug(includedatasynchronouspulsethesignalground)whichleadtodemodulationequipment.SynchronousTransmittertriestomakeitsvelocitycapabilityto300Mbps.AmongalloftherecentmainboardbusonlyPCIbuscansupptt
6、hekeepingofa300MbpsthruputsoSynchronousTransmittersresearchisbasedonPCIbus.BecausePCIbusprotocoliscomplicatedweusedofthePCItargetinterfacechipAMCCS5920tocarryoutthecontrolofthePCIbus.Atthesametimefthesakeofthemaintenance
7、ofthedurativeevenspeedcodeflowweshouLD#applytheFIFO(First_InFirst_Outmemy).ThesubjectachievestheconnectionofS5920FIFOassuesthehighspeedtransptofthesignal.ThroughefftSynchronousTransmitterhasachievedprincipiumlybasicprinc
