SMBus 是一种基于I2C 的协议,可为系统和电源管理相关任务提供控制总线。 SMBus 允许各种系统组件芯片和设备相互传递 .
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The System Management Bus (SMBus) is a two-wire interface through which various system component chips and devices can communicate with each other and with the rest of the system. It is based on the principles of operation of the I 2 C bus. Appendix B provides a description of some of the ways the SMBus characteristics are different from those of the I?C bus. SMBus provides a control bus for system and power management related tasks. A system may use SMBus to pass messages to and from devices instead of using individual control lines. Removing the individual control lines reduces pin count. Accepting messages ensures future expandability. With System Management Bus, a device can provide manufacturer information, tell the system what its model/part number is, save its state for a suspend event, report different types of errors, accept control parameters, and return its status.
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2013年11月STM8和STM32产品选型手册
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