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利用USB主机控制器CH375设计基于DSP的USB主机接口,实现在DSP数据处理系统中用U盘进行数据临时存储。文章给出了接口的软硬件设计方案,并具体叙述了软件设计中FAT16文件系统的使用。该方案已成功用于基于DSP的地震电缆测试仪的研发实践中,这对于DSP与USB主机结合的相关应用具有较强的借鉴价值。
The USB host controller CH375 is used to design the USB host interface based on DSP to realize the temporary storage of data in the DSP data processing system using the U disk. The article gives the interface hardware and software design, and specifically describes the use of FAT16 file system in software design. The scheme has been successfully used in the DSP-based seismic cable tester R & D practice, which for DSP and USB host with the relevant application has a strong reference value.