标签: ports

SystemVerilogPorts&DataTypesForSimple,EfficientandEnhancedHDLModeling(CliffordE.Cummings)

h8/520……

应用时钟串口IIEB+HM>AN200SPIUsingtheRabbitClockedSerialPortsSerialPeripheralInterface(SPI)TheSPIisafour-wirefull-duplexsynchronousserialdatalinkthatisimplementedinmanymicrocontrollersandperipheraldevices.TheSPIwasoriginallydevelopedbyMotorola1toenableagluelessmicrocontrollerinterfacewithindustry-standardserialdevicessuchasserialEEPROMs,dataconverters,liquidcrystaldisplays,aswellasotherperipheralsandmicrocontrollers.TheSPIconsistsofshiftregistersthatseriallytransmitandreceivedataatthesametime.ForserialcommunicationtotakeplacewithinaSPI-basedsystem,onedevicehastoactasamasterandatleastoneotherdevicehastoactasaslave.Inthis……

Abstract:ThisarticleexplainshowtointerfaceaGPIOporttoanSPIperipheral.ItdefinesthebasicsoftheSPIprotocol,thesignalsandthefourtransfervariationsfortheSCKsignal.AsoftwareroutineisincludedtoimplementtheSPIinterfaceusingtheMAX7651,aflashprogrammable12-bitintegrateddata-acquisitionsystem.Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSINTERFACECIRCUITSKeywords:SPI,SPIinterface,SCK,MOSI,MISO,CS,I/Oports,bitbanging,SPIperipheral.Sep17,2001APPLICATIONNOTE802InterfacingSPIPeripheralstotheMAX7651ProcessorAbstract:ThisarticleexplainshowtointerfaceaGPIOporttoanSPIperipheral.ItdefinesthebasicsoftheSPIprotocol,thesignalsandthefourtransfervariationsfortheSCKsignal.AsoftwareroutineisincludedtoimplementtheSPIinterfaceusingtheMAX7651,aflashprogrammable12-bitintegrateddata-acquisitionsystem.IntroductionTheSPIbusisa4-wireserialcommunicationsinterfaceusedbymanymicroprocessorperipheralchips.TheMAX7651microprocessordoesnotincludededicatedhardware……

Abstract:Engineersoftenwishthatradiosusceptibility(RS)orradioimmunitycouldbecuredwithanantibiotic,avaccine,orsomeformofcure-all.Unfortunately,solvingtheRSproblemisnotthateasy.Indeed,thelawsofphysicsapply.InthisarticlewediscusssourcesofRS.Wealsooffertipsandhintstoprotectsystems,powersupplies,printedcircuitboards(PCBs),andelectroniccomponentsfromradiofrequencyinterference.Maxim>DesignSupport>TechnicalDocuments>Tutorials>A/DandD/AConversion/SamplingCircuits>APP5065Maxim>DesignSupport>TechnicalDocuments>Tutorials>AmplifierandComparatorCircuits>APP5065Maxim>DesignSupport>TechnicalDocuments>Tutorials>CommunicationsCircuits>APP5065Keywords:radiosusceptibility,powersupplies,grounding,printedcircuitboard,electroniccomponents,radiofrequencyinterference,radioimmunity,electromagneticfield,EMI,RFI,jittertransitions,IntegratedfilterIC,inputoutputports,powerline,RSJan03,2012TUTORIAL5065RadioSusceptibility―CurewithAntibiotic,Vaccine,ortheLawsofPhysics……

Abstract:ThiscircuitexploitsallthepoweravailablefromaUSBportbydynamicallyadjustingtheamountofcurrentdeliveredtotheload,therebysiphoningarelativelyconstant(andmaximum)currentfromtheUSBport.Includedareacurrent-senseamplifier(MAX4173),voltagereference(MAX6129),andprecisionopamp(MAX4238).Maxim>AppNotes>AmplifierandComparatorCircuitsInterfaceCircuitsVoltageReferencesKeywords:USBports,USB-portpower,current-senseamplifiers,voltagereferences,opamps,n-channelMOSFETsJan05,2011APPLICATIONNOTE4563DynamicSiphonStealsCurrentfromUSBPortAbstract:ThiscircuitexploitsallthepoweravailablefromaUSBportbydynamicallyadjustingtheamountofcurrentdeliveredtotheload,therebysiphoningarelativelyconstant(andmaximum)currentfromtheUSBport.Includedareacurrent-senseamplifier(MAX4173),voltagereference(MAX6129),andprecisionopamp(MAX4238).AsimilarversionofthisarticleappearedintheDecmeber15,2006issueofEDNmagazine.USBportscanbeahandysourceof5Vpower.NotonlycanaUSBportpowera……

摘要：工程师常常想，无线电易感性（RS）或无线电干扰，可以用抗生素，疫苗，或某种形式包治百病治愈。不幸的是，解决了RS问题并不那么容易。事实上，物理定律的适用。在这篇文章中，我们讨论了RS的来源。我们还提供技巧和提示，以保护系统，电源供应器，印刷电路板（PCB），电子元器件，无线电频率干扰。Maxim>DesignSupport>TechnicalDocuments>Tutorials>A/DandD/AConversion/SamplingCircuits>APP5065Maxim>DesignSupport>TechnicalDocuments>Tutorials>AmplifierandComparatorCircuits>APP5065Maxim>DesignSupport>TechnicalDocuments>Tutorials>CommunicationsCircuits>APP5065Keywords:radiosusceptibility,powersupplies,grounding,printedcircuitboard,electroniccomponents,radiofrequencyinterference,radioimmunity,electromagneticfield,EMI,RFI,jittertransitions,IntegratedfilterIC,inputoutputports,powerline,RSJan03,2012TUTORIAL5065RadioSusceptibility―CurewithAntibiotic,Vaccine,ortheLawsofPhysics……

MT6140RXportsS-parameterPRELIMINARY,SUBJECTTOCHANGEWITHOUTNOTICEFOMERDIheATd@EKleaCtekON.coFIm.DEcnNTUSIAEOLNL1MT6140RXInputPortsS-parameterMTKCONFIDENTIAL,NODISCLOSUREYMediaTekInc.MT6140RXInputPortsS-parameter16July,2007V0.1IntroductionThisapplicationnotedescribesthemeasuredSparametersfromtheMT6140receiverinputportsandtransmitteroutputports.Ithelpstodeterminetheinitialmatchingnetworksofthereceiverinputportsandtransmitteroutputports.TheoptimumperformanceoftheMT6140thusachievedafterfinetuningtheinitialmatchingnetworks.ThereferenceplansofthemeasuredSparametersarecalibratedtotherelatedinputpinofMT6140chip.Thedataareshownintheformatoftherealandimaginarypartsoftheinputrefle……

HFSS资料,ports_bounds2……