usb_1.1_2.0_3.0协议完整版.rar

带目录的完整清晰usb协议规范，注意是“英文版”(1分防白嫖党，再来幸苦劳动费: ) 以“USB 1.1 协议”为例，部分目录如下 Chapter 3 Background Chapter 4 Architectural Overview Chapter 5 USB Data Flow Model Chapter 6 Mechanical Chapter 7 Electrical Chapter 8 Protocol Layer Chapter 9 USB Device Framework . . .