Design of Duplex Interface Between FPGA and USB2.0

In order to accomplish the high-speed data transportation between the FPGA and the USB2.0,The system implement a bi-directional interface which works in the Slave FIFO mode of USB2.0 interface chip CY7C68013 and using the time division multiplexing mechanism.After the self-loop testing by writing data continuously from OUT FIFO to IN FIFO of USB under the control of the FPGA,this design has been applied to the ultra-wideband(UWB)wireless systems.The results show that the interface works stably and transfers data accurately,its average rate is 12Mb/s.