37.2.3.4.1 Bus Free Condition

The Bus Free condition is defined as a period occurring after a Stop and before a Start condition. The minimum duration of a Bus Free condition is specified in Table 37-4 below. For the sake of simplicity and ease of use, this I3C module sets BFREE bit when a Stop is detected and clears it when a Start is detected to represent a Bus Free condition.

As per the MIPI I3C® Specification, after a Stop condition the Controller must wait for a Bus Free condition to become active before transmitting a Start condition on the bus.