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PMIC: CP240x LCD Driver Family Slide 31
The SMBus and I2C bus are widely used interfaces for many peripheral devices. An example of an I2C device is a temperature sensor. The configuration and reading of the data is determined by a protocol that sends an address and a read or write control. The interface is based on an open drain two wire network where there can be multiple masters and slaves. Each device on the bus must be able to release the bus when not in use. The master device always initiates the communications to the addressed slave device.
PTM Published on: 2011-05-13