A method is provided for managing the operation of a circuit operating in a slave mode. The circuit is connected to a bus having at least two of wires and a priority logic level. The slave circuit imposes the priority logic level on a first wire of the bus. While imposing, the slave circuit detects a possible conflict on the first wire resulting from a forcing, external to the slave circuit, of the first wire to another logic level. Upon detecting a conflict, the slave circuit is placed in a state stopping the sending by the circuit of any data over the bus while leaving the circuit listening to the bus.