Real-time multi-path multiplexing synchronous high-speed transmission serial bus protocol

The invention relates to a real time multiplexed synchronous high speed transmission serial bus protocol, wherein transmission signals of a series bus in the protocol comprise three groups of signals of control signals, clock signals and data signals, any node can be appointed in advance as an only main node on the bus, the control signals are sent by the main node to control each node to send data in turn, the sending order and the data length of each node are preset, all data on the bus can be received through the clock signals and the data signals, the control signals of the main node comprise three states: (a) idle states, a synchronous series bus under the states is controlled by the main node, (b) node switching states, the states represent that data transmission of a preceding nodeis finished, the transmission of a next node is about to start, the node which obtains the bus control right discards the bus control right under the states, a next bus owner obtains the bus control rights and starts outputting the bus signals, (c) data transmission states, the states represent that the node which obtains the bus control right is outputting signals to the bus.