Design & Implementation of Military Bus Communication Module based on USB Interface

The structure of bus communication module is discussed.Structure configuration of chip EX-USB FX2 working in the FIFO mode and bus protocol module based on FPGA are introduced in detail.The communication structure design between FIFOs in the bus protocol module and USB is also presented.The sulution of problem such as the level translator and power management is provided.The module has such characteristic as four channels,speediness and portable.Results simulation and actual test indicates that the module is not only fulfill the request of communication among devices on board,but also compliance to avionic application condition and reliability.