CS8900A

CopyrightCirrusLogic,Inc.2001(AllRightsReserved)CS8900AProductDataSheet
 ™ISAEthernetControllerFEATURES
Single-ChipIEEE802.3EthernetControllerwithDirectISA-BusInterface
MaximumCurrentConsumption=55mA(5VSupply)
3VOperation
IndustrialTemperatureRange
ComprehensiveSuiteofSoftwareDriversAvailable
EfficientPacketPage™ArchitectureOperatesinI/OandMemorySpace,andasDMASlave
FullDuplexOperation
On-ChipRAMBuffersTransmitandReceiveFrames
10BASE-TPortwithAnalogFilters,Provides:—AutomaticPolarityDetectionandCorrection
AUIPortfor10BASE2,10BASE5and10BASE-F
ProgrammableTransmitFeatures:—AutomaticRe-transmissiononCollision—AutomaticPaddingandCRCGeneration
ProgrammableReceiveFeatures:—StreamTransfer™forReducedCPUOverhead—Auto-SwitchBetweenDMAandOn-ChipMemory—EarlyInterruptsforFramePre-Processing—AutomaticRejectionofErroneousPackets
EEPROMSupportforJumperlessConfiguration
BootPROMSupportforDisklessSystems
BoundaryScanandLoopbackTest
LEDDriversforLinkStatusandLANActivity
StandbyandSuspendSleepModesDESCRIPTIONTheCS8900Aisalow-costEthernetLANControllerop-timizedforIndustryStandardArchitecture(ISA)PersonalComputers.Itshighly-integrateddesignelimi-natestheneedforcostlyexternalcomponentsrequiredbyotherEthernetcontrollers.TheCS8900Aincludeson-chipRAM,10BASE-Ttransmitandreceivefilters,andadirectISA-Businterfacewith24mADrivers.Inadditiontohighintegration,theCS8900Aoffersabroadrangeofperformancefeaturesandconfiguration-options.ItsuniquePacketPagearchitectureautomaticallyadaptstochangingnetworktrafficpat-ternsandavailablesystemresources.Theresultisincreasedsystemefficiency.TheCS8900Aisavailableina100-pinTQFPpackageideallysuitedforsmallform-factor,cost-sensitiveEther-netapplications.WiththeCS8900A,systemengineerscandesignacompleteEthernetcircuitthatoccupieslessthan1.5squareinches(10sq.cm)ofboardspace.ORDERINGINFORMATIONCS8900A-CQ0°to70°C5VTQFP-100CS8900A-IQ-40°to85°C5VTQFP-100CS8900A-CQ30°to70°C3.3VTQFP-100CS8900A-IQ3-40°to85°C3.3VTQFP-100CRD8900A-1EvaluationKitEEPROMRJ-4510BASE-TAttachmentUnitInterface(AUI)20MHzXTALRAMISABusLogicMemoryManager802.3MACEngineEEPROMControlEncoder/Decoder&PLL10BASE-TRXFilters&Receiver10BASE-TTXFilters&TransmitterAUITransmitterAUICollisionAUIReceiverClockPowerManagerBoundaryScanTestLogicLEDControlCS8900AISAEthernetControllerISADS271PP4APR‘01CIRRUSLOGICPRODUCTDATASHEET2DS271PP4CS8900ACrystalLAN™ISAEthernetControllerCIRRUSLOGICPRODUCTDATASHEETTABLEOFCONTENTS1.0INTRODUCTION......................................................................................................................71.1GeneralDescription............................................................................................................71.1.1TDirectISA-BusInterface......................................................................................71.1.2TIntegratedMemory..............................................................................................71.1.3T802.3EthernetMACEngine................................................................................71.1.4TEEPROMInterface..............................................................................................71.1.5TCompleteAnalogFrontEnd................................................................................71.2SystemApplications...........................................................................................................71.2.1TMotherboardLANs..............................................................................................71.2.2TEthernetAdapterCards.......................................................................................81.3KeyFeaturesandBenefits.................................................................................................91.3.1TVeryLowCost.....................................................................................................91.3.2THighPerformance................................................................................................91.3.3TLowPowerandLowNoise..................................................................................91.3.4TCompleteSupport...............................................................................................92.0PINDESCRIPTION.............................................................................................................113.0FUNCTIONALDESCRIPTION...............................................................................................163.1Overview..........................................................................................................................163.1.1TConfiguration.....................................................................................................163.1.2TPacketTransmission.........................................................................................163.1.3TPacketReception..............................................................................................163.2ISABusInterface..................................................................