Multifunction vehicle bus controller and multifunction vehicle bus network card

The utility model relates to a multifunction vehicle bus controller and a multifunction vehicle bus network card, wherein, the multifunction vehicle bus controller comprises a bus, a message analysis unit for controlling data frame receiving/sending sequence, an arbitration logic unit for controlling access to a communication memory, a communication memory controller unit for controlling the sync transmission of data, addresses and control signals, and a CPU port unit connected with a CPU unit, a main control unit is connected with the bus, the message analysis unit is connected with the bust and the main control unit, the arbitration logic unit is connected with the bus, the communication memory controller unit is connected with the bus, and the CPU port unit is connected with the bus. The multifunction vehicle bus controller provided by the embodiment of the utility model ensures that all data stored in the communication memory is input to the CPU unit, the main control unit and a reception time monitoring unit in real-time without interruption, solves the conflict caused by the access of a plurality of functional units to the communication memory at the same time, and enables the multifunction vehicle bus controller to transmit data with more efficiency and accuracy and less content losses.