IN-VEHICLE ETHERNET COMMUNICATION SYSTEM AND COMMUNICATION METHOD THEREOF

摘要

A first device, which is any one of a plurality of devices communicating with each other using an Ethernet scheme in the in-vehicle Ethernet communication system can include: a central processor, and a physical layer processor configured to connect the central processor to a second device which is another one of the plurality of devices. The physical layer processor can include a counter configured to output a first counting end signal after performing a counting operation during a first predetermined duration in response to receiving a driving power source, a signal transmitter configured to transmit a first master demanding signal for demanding that the first device continuously operate in a master mode in relation to the second device in response to receiving at least one of a mode signal and the first counting end signal, a signal receiver configured to output a master sensing signal which is transmitted by the second device and indicates whether a second master demanding signal for demanding that the second device continuously operate in the master mode is received, and an operation mode controller configured to determine an operation mode of the first device in response to receiving at least one of the first counting end signal and the master sensing signal and to generate the mode signal indicating the determined operation mode.