摘要
USB2.0通信接口电路采用两个电阻作抗阻匹配,其CY7C68013芯片内部集成电路用以模拟USB设备断连,上电运行时须将固件程序读入内部RAM中。USB驱动程序设计采用USB总线和功能驱动程序设计,USB固件程序采用C51语言编写,分别由操作系统与设备开发者提供。
In USB 2.0 interface circuit, 2 resistances is adopted to match impedance, and built-in IC CY7C68013 is used as on/off circuit of USB device. Firmware program is red in RAM when power-up operation. The design of USB bus and functions drivers was adopted in design of USB driver. USB firmware program was compiled with C51 language, the program supplied separately by the developers of operating system and device.
出处
《兵工自动化》
2005年第3期56-57,共2页
Ordnance Industry Automation
