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常规的USB接口电路设计涉及较多的知识,需要花费一定的时间和精力,而基于FT245BM的USB接口设计则给出了一种新的USB快速设计方案。在简单介绍FT245BM芯片工作原理和功能的基础上进行了USB接口硬件电路的设计,给出了具体应用电路图。并对微控制器端和计算机端的USB接口控制软件进行了设计。针对芯片厂商提供的不同驱动程序,通过示例介绍了基于两种驱动程序下的软件设计思路。该USB接口电路在实际应用中性能良好,能够满足数据传输要求。
Conventional USB interface circuit design involves more knowledge and takes some time and effort. The USB interface design based on FT245BM gives a new USB fast design scheme. Based on the brief introduction of the working principle and function of FT245BM chip, the hardware design of the USB interface is given and the circuit diagram of the application is given. And the microcontroller side and the computer side of the USB interface control software has been designed. According to the different drivers provided by the chip manufacturers, an example is given to introduce the software design ideas based on the two drivers. The USB interface circuit in good performance in practice, to meet the data transfer requirements.