摘要：的I² C总线和SMBus ™是流行的I2C总线，基本上都是互相兼容。通常情况下，设备，master和slave，是自由总线双方互换。既总线设有寻址slave（虽然可以改变两者之间的具体地址分配） 。总线运行在相同的速度，高达100kHz ，但在I² C总线为400kHz至2MHz的版本。两巴士完全兼容，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 > App Notes > BATTERY MANAGEMENT POWER-SUPPLY CIRCUITS Keywords: I2C, SMB, serial interface, i2c bus, 2-wire buses, smbus Dec 01, 2000 APPLICATION NOTE 476 Comparing the IC Bus to the SMBus Abstract:The IC bus and the SMBus are popular 2-wire buses that are essentially compatible with each other. Normally devices, both masters and slaves, are freely interchangeable between both buses. Both buses feature addressable slaves (although specific address allocations can vary between the two). The buses operate at the same speed, up to 100kHz, but the IC bus has both 400kHz and 2MHz versions. Complete compatibility between both buses is ensured only below 100kHz. This application note focuses on the significant differences between IC and SMB. The……