SMBus
The System Management Bus (abbreviated to SMBus or SMB) is a simple two-wire bus, derived from I?C and used for communication with low-bandwidth devices on a motherboard, especially power related chips such as a laptop's rechargeable battery subsystem (see Smart Battery Data)。 Other devices might include temperature, fan or voltage sensors, lid switches and clock chips。 PCI add-in cards may connect to an SMBus segment。
A device can provide manufacturer information, indicate its model/part number, save its state for a suspend event, report different types of error, accept control parameters and return status。查看更多>>