The protocol of USB Host Controller is analysed and the application of USB technique to intelligent instruments are introduced.
本文研究了US B主控制器协议,并分析了USB技术应用于智能仪表的技术可行性。
Traditional management system of USB Host on PC are introduced in embedded instruments or devices, which makes convenience of data transport of these devices and instruments.
There are generally two modes of USB technology could be used in embedded systems, one is the USB device mode using as USB Devices and the other is USB host mode using as USB Host Controllers.
This system, which facilitates the utility of PC cameras in embedded application, is composed of MCU, USB Host Controller, high-speed RAM and FLASH memory.