Basic Manager Mode
The manager is always the device that drives the SCL clock signal. The attached devices respond to the I2C controller. There can be multiple attached responders on the I2C bus; however, there is normally only one manager. To select manager mode, set LPD_I2C.CTRL [MS] bit = 1.
It is possible to have multiple managers attached to the bus.
Bus Monitoring Mode
In manager mode, the controller provides the SCL clock. Multi-manager mode arbitrates bus speed and detect clashes. To select manager mode, set LPD_I2C.CTRL [MS] bit = 1.