摘要:
A mode switching notification in a first mode is transmitted from a transmission device 10 to a reception device 20 according to a first protocol. In a second mode, training data is transmitted from the transmission device 10 to the reception device 20, clock training is performed in the reception device 20, and a mode switching notification for the first mode is transmitted from the transmission device 10 to the reception device 20 according to a second protocol simpler and faster than the first protocol.