EN16603-50-12-2020isaEuropeanstandardtitled"SpaceEngineering—SpaceWire—Links,Nodes,Routers,andNetworks."ItprovidesanintroductionandtechnicalspecificationsforSpaceWire,ahigh-speed,point-to-pointserialdatabusandnetworktechnologywidelyusedinspacemissionsforonboarddatahandlingandcommunication.Keycomponentscoveredinthestandardinclude:-Links:Definesthephysicalanddatalinklayers,includingelectricalcharacteristics,connectors,cables,andencodingschemes(e.g.,DS-DEencoding).-Nodes:Referstodevices(e.g.,instruments,processors,memoryunits)thatinterfacewiththeSpaceWirenetwork,detailingrequirementsfordatatransmission,packetstructure,anderrorhandling.-Routers:DescribesthefunctionalityofSpaceWirerouters,whichdirectdatapacketsbetweennodesandlinks,supportingnetworktopologieslikestars,meshes,orhybrids.Itincludesroutingmethods,addressresolution,andflowcontrol.-Networks:Explainshowlinks,nodes,androutersformacompletenetwork,coveringnetworkdesign,configuration,andmanagement,includingtime-codedistributionandfaulttolerance.Thestandardensuresinteroperability,reliability,andperformanceforspaceapplications,aligningwithinternationalSpaceWireprotocols(e.g.,ECSS-E-ST-50-12C).Itsupportsmissionsbyenablingefficientdatatransferinharshspaceenvironments.