嵌入式USB主/从机应用模块

Embedded USB Host/Slave Application Module

基于 Cypress公司的 USB主/从控制芯片 SL811HS,参考最新技术 USB OTG,开发了一种遵循USB1.1协议、多功能的嵌入式USB主/从机系统模块。该模块作为主机时,支持精简的FAT文件系统,可以对普通U盘进行自动识别,并把设备配置为标准的磁盘驱动器进行数据采集及存储;作为从机时,又可以当作一般的USB接口,在进行数据采集的同时与上位机进行通信和数据传输。测试运行结果表明:该模块可广泛应用于各种便携式、嵌入式数据系统中,可靠地实现了USB OTG功能。

Using USB embedded host/slave controller chip SL811HS, on the basis of the latest technology USB OTG, a multifunction embedded host/slave system module conforming to USB 1.1 was developed. The module can support FAT simplified file system, automatically identify ordinary flash memory disk, and configure a device as a standard disk drive in order to realize data collection and store when it is on host mode. If the module is on slave mode, it can be regarded as a general USB interface to conduct data collection, data communication and transmission with PC. The testing results show that the module can be widely used in various portable and embedded data systems, and implement USB OTG functions safely.