主板基础知识 课件.ppt

《主板基础知识 课件.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、M/BDesignBasicsDWHD-PCA-EE:Tune2019.01.08RoadmapM/BBlockDiagramsM/Bbasiccomponents–R/L/CM/Bbasiccomponents–ChipsetM/Bbasiccomponents–SuperI/OM/Bbasiccomponents–CPUPCIEIntroduction8B/10BCodingM/BBlockDiagramsFSBDMIDDR2channelAVGA/DVI/HDMIPCIEX16USB2.0(12Ports)SATAIIinterfa

2、ceDDR2channelBPCIinterfaceComPortPrinterPortPS/2PortFloppyPortHDAudioNetworkPHYI/FPCIEX1interfaceM/BBlockDiagrams–ActualM/BM/Bbasiccomponents–RResistorspecificationPowerRating:(ratedpower70degree)RC04021/16WRC06031/10WRC08051/8WRC12061/4WRatedVoltage:theDCorAC(rms)continu

3、ousworkingvoltagecorrespondingtotheratedpowerisdeterminedbythefollowingformula.ElectricalcharacteristicoperatingtemprangemaximumworkingvoltageMaximumoverloadvoltageDielectricwithstandingvoltageResistancerangeTempcoefficientResistorapplicationonmotherboardJumperforreserved

4、designordebug,often0resistor;PulluporpulldowntosomelogiclevelImpedancematchforclockandhighspeedsignalForpower,usedasdampingresistor,powerbleedoffM/Bbasiccomponents–C[SMD]CapacitorspecificationSize:RC0402RC0603RC0805RC1206RatedVoltage:10V,16V,25V,50VElectricalfeatures:oper

5、atingtemprangeCapacitancetoleranceoperatingtemperatureLoadlifecasesizecapacitorapplicationonmotherboardPowerdecouplingtostabilizeasignalorpowerrailEMIsignalsink,100pF,150pF…RCdelay,suchas100nF,1uF…Highspeedsignalcoupling,suchas100nFTolerance:NPOX5RX7RY5VM5UM/Bbasiccompone

6、nts–C[PTH]CapacitorspecificationParameter:CapacitanceESR,DissipationFactorImpedanceLeakagecurrentElectricalcharacteristicoperatingtemprangemaximumworkingvoltageMaximumoverloadvoltageDielectricwithstandingvoltageResistancerangeTempcoefficientE-Capacitorapplicationonmotherb

7、oardPowerdecoupling,tostabilizepowerrailAudioSignalcouplingLowESRcap,forripplecurrentfilterTolerance:AlECAPOS-CONFPCAPM/Bbasiccomponents–L[SMD]CapacitorspecificationType:Chipinductor–SignalThinFilmChipInductorMultilayerChipInductorWireWoundChipInductorFerritebead-EMIDiffe

8、rentialmodeCommonmodePowerInductorElectricalcharacteristicoperatingtemprangemaximumworkingvoltag