Intel845芯片组介绍教学内容.ppt

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1、Intel845芯片组介绍IntegratedLANController----InterfacetodiscreteLANconnectcomponent----10/100Mbit/secEthernetsupport----1Mbit/secHomePNA*supportIntegrateIDEController(一)----Independenttimingofupto4drives----UlrtaATA/100/66/33,BMIDEandPIOmodes----Readtransferupto100MB/s,Writesto

2、89MB/s----SeparateIDEconnectionsforPrimaryandSecondarycablesUSB(UniversalSerialBus)----2UHCIHostControllerwithatotalof4ports----USB1.1compliant----Supportswake-upfromsleeping----SupportslegacyKeyboard/MousesoftwareAC’97LinkforAudio----AC’972.1compliant----Independentbusmas

3、terlogicfor5channels(PCMIn/Out.MicInput.ModemIn/Out)----SeparateindependentPCIfunctionsforAudioandModem----SupportforuptosixchannelsofPCMaudiooutput(fullAC3decode)----Supportswake-upeventsInterruptController----Supportupto8PCIinterruptpins----SupportsPCI2.2Message-BasedInt

4、errupts----Twocascaded82C59----IntegratedI/OAPICcapability----15interruptssupportedin8259mode24supportedinI/OAPICmode----supportsSerialInterruptProtocol----SupportsFront-SideBusinterruptdelivery可編程中斷控制器PowerManagementLogic(一)----ACPI1.0compliant----Supportfor“IntelSpeedSte

5、ptechnology”processorpowercontrol----ACPIPowerManagementTimer----PCIPME#support----SMI#generation----Allregistersreadable/restorableforproperresumefrom0Vsuspendstates----SupportforAPM-basedlegacypowermanagementfornon-ACPIimplementationsPowerManagementLogic(二)EnhancedDMACon

6、troller----Twocascaded8237DMAcontrollers----PCIDMA:SupportsPC/PCI----IncludestwoPC/PCIREQ#/GNT#pairs----SupportsLPCDMA----SupportsDMACollectionBuffertoprovideType-FDMAperformanceforallDMAchannelsSystemManagementBus----HostinterfaceallowsprocessortocommunicateviaSMBUS----Sl

7、aveinterfaceallowsanexternalMicrocontrollertoaccesssystemresources----Compatiblewithmost2-WirecomponentsthatarealsoI2CcompatibleLPC(LowPinCount)I/O----AllowsconnectionoflegacyISAandX-BusdevicessuchasSuperI/O----SupportstwoMaster/DMAdevicesReal-TimeClock----256-bytebattery-

8、backedCMOSRAMFirmwareHub(FWH)I/O----FirmwareHub(FWH)I/OsupportsBIOSMemorysizeupto8MBNew:P