本固件程序用于CYPRESS公司的FX2系列高速USB芯片，实现数据的双向透明传输，即不对数据进行处理，只实现传输功能。程序采用GPIF方式，批量传输模式。经过调试，完全可用，已经用于上市的产品。通用性强，根据具体应用，只需做少量更改即可使用，可作为固件设计的样本。-The firmware for the CYPRESS FX2 series of high-speed USB chips, two-way transparent transmission of data, that data is not processed, only to realize transmission. Program uses GPIF mode, bulk transfer mode. After debugging, fully available, has been used for the products listed. Versatility, depending on the application, just make a few changes to use, can be used as a sample firmware design.