基于CH341S的USB接口设计与实现

Design and Implementation of USB Interface based on CH341S

利用CH341S接口芯片的EPP并行接口功能,可设计USB通用控制接口,以实现计算机控制系统对外设的读写控制。介绍了基于CH341S的USB接口设计的硬件电路原理及软件控制程序,提供了较完整的设计方案。且方案已在多外设的"通信模拟训练系统"中得到应用,控制方法灵活、读写数据快、系统工作稳定可靠。

Making use of EPP parallel interface function of CH341S interface chips, USB current control interface is designed to carry out reading and writing control for the outside equipments. Hardware circuit design and software control programming which are based of CH341S interface chips are introduced in the paper, which provides more completed designing project for the readers. The project has been applied in the ＂communication simulation training system＂ of the multiple outside equipments. The control method is agile, the speed of data reading and writing is fast and the work of the system is steady-going and reliable.