摘要：的I²C总线和SMBus™是流行的2线bus，基本上都是互相兼容。通常情况下，设备，主人和slave，是自由bus双方互换。既bus设有寻址slave（虽然可以改变两者之间的具体地址分配）。bus运行在相同的速度，高达100kHz，但在I²C总线为400kHz至2MHz的版本。两bus完全兼容，确保仅低于100kHz。本应用笔记的重点，I²C和中小企业之间的显着性差异。
Maxim>AppNotes>BATTERYMANAGEMENTPOWER-SUPPLYCIRCUITSKeywords:I2C,SMB,serialinterface,i2cbus,2-wirebuses,smbusDec01,2000APPLICATIONNOTE476ComparingtheICBustotheSMBusAbstract:TheICbusandtheSMBusarepopular2-wirebusesthatareessentiallycompatiblewitheachother.Normallydevices,bothmastersandslaves,arefreelyinterchangeablebetweenbothbuses.Bothbusesfeatureaddressableslaves(althoughspecificaddressallocationscanvarybetweenthetwo).Thebusesoperateatthesamespeed,upto100kHz,buttheICbushasboth400kHzand2MHzversions.Completecompatibilitybetweenbothbusesisensuredonlybelow100kHz.ThisapplicationnotefocusesonthesignificantdifferencesbetweenICandSMB.The
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