I3C Targets are only allowed to drive the Bus under certain situations. Besides during a read, and when ACKing their own address, I3C Targets may also drive after a START (but not Repeated START). After a START, the I3C Bus reverts back to Open-Drain Pull-Up resistor mode; thus, the Target that drives a low value (i.e., logic 0) would win.

FAQ Type: 
I3C