Design of data unilateral transmission based on USB 2.0
基于USB2.0接口的单向数据传输系统设计

When transferring files between the different security domain, files are required to be only transferred from low security domain to high security domain. An unilateral transferring system was developed based on USB2.0 bus. Its data transmission scheme by combining USB2.0 interface device CY7C68013 and DAUL-PORT RAM was described. Experiment results verify that the system based on USB2.0 interface, DAUL-PORT RAM data buffer and technology of optical couplers insulation realizes high-speed, unilateral and reliable data transmission.