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In order to improve the stability and reliability of high-speed data transmission conditions, the paper proposes the use of DSP and FPGA compatible manner, control CAN bus for data transfer. System uses a CAN bus controller SJA1000; using PCA82C250 as CAN bus transceiver; using the unique parallel processing FPGA implementation of the CAN bus controller to read and write, so that control energy and other signals; using a data processing unit DSP and CAN bus controller direct data transmission, eliminating the need for data transfer between the DSP and the FPGA time; 74LVC4245 complete the conversion using two standard signal level signal and 5 V COMS between 3.3 V TTL. Experimental results show that the system is stable and reliable data transmission, processing and transmission can basically meet the requirements of high-speed signals.