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USB(通用串行总线 )已经越来越被广泛的应用 ,因为它的高速传输性能和即插即用特性已逐渐取代了传统的串行总线。而如果使用USB实现并行数据的高速传输 ,同时为MCU、DSP等处理器开发USB接口以实现与PC机的通信将会大大提高MCU、DSP等控制和处理系统的功能性、灵活性和系统性。文中介绍了FTDI公司的FT8U245AMUSBFIFO高速并行数据传输芯片的内部结构、引脚分布、功能特性和工作原理 ,给出了一种用FT8U245AM芯片为DSP并行数据开发的USB接口设计实例
USB (Universal Serial Bus) has been more and more widely used, because of its high-speed transmission performance and plug and play features have gradually replaced the traditional serial bus. If you use USB to achieve high-speed parallel data transmission, while the MCU, DSP and other processors to develop USB interface to communicate with the PC will greatly enhance the MCU, DSP and other control and processing system functionality, flexibility and system . This paper introduces FTDI’s FT8U245AMUSBFIFO high-speed parallel data transmission chip’s internal structure, pinout, functional characteristics and working principle, gives a FT8U245AM chip for DSP parallel data development USB interface design examples