In order to improve the transmission speed of a domestic wired unit test-bed,FMQL series chips are proposed as the main control chip to transmit and upload command data.Ethernet data transmission based on FPGA is widely used,but there are very few controller chips supporting Gigabit Ethernet in domestic chips,which makes it very difficult to realize the transmission of Gigabit Ethernet produced in China.To solve this problem,FMQL series chips integrating ARM and FPGA are proposed as the main control chip.Through the protocol conversion between AXI-Stream bus and backplane bus,the data transmission between backplane bus and host computer is completed,and the speed reaches 20 Mbps,meeting the functional requirements.