本文针对嵌入式系统中USB 接口进行了研究,提出了MCU+USB 的嵌入式USB Host 的 实现方案。用SL811HS 作为USB 主控芯片,用W77E58 作为系统MCU,通过硬件和软件的设计,实现了嵌入式USB Host。 关键词:SL811HS;W77E58;嵌入式系统;USB 接口 Abstract:This paper aims at USB interface in the embedded system and puts forward a MCU+USB project for realizing USB Host .To use SL811HS as USB main controller and W77E58 as system MCU,It is given a way to realize the embedded USB Host through the design of hardwares and softwares. KeyWords:SL811HS;W77E58;the embedded system;USB interface