Research And Implementation Of GJB289A Bus USB Conversion Technology Based On ZYNQ7020 Processing Platform

Most GJB289A bus products exist in the form of boards,most of the interfaces of these boards are PC104,PCI,PCIE and CPCI,such interfaces basically have the problems of developing difficulty,low portability and high cost.In order to solve this problem,this paper proposes to apply USB interface to GJB289A bus technology and design a USB interface GJB289A board.In this paper,the GJB289A bus protocol is realized by using the domestic HKS1553 BCRT chip,and the USB interface GJB289A board is designed around this chip.Since the host interface of HKS1553 BCRT chip does not support USB interface,this paper uses ZYNQ processing platform to convert the interface.In this paper,the hardware design of the USB interface GJB289A board includes GJB289A core board design and backplane design,the GJB289A core board design includes power circuit,clock circuit,transceiver circuit,flash circuit,serial port circuit and reset circuit,the backplane design includes power circuit,transformer circuit,USB interface circuit,Ethernet interface circuit,JTAG circuit,encryption circuit and memory circuit.In this paper,the software design of the USB interface GJB289A board includes transmission software design and driver software design.Through the test,the communication function of the USB interface and GJB289A interface is verified.To sum up,this paper has completed the design and implementation of the USB interface GJB289A board,which has the advantages of convenient carrying,flexible use and strong universality.