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9.6.3 Interface
An interface descriptor never includes endpoint zero in the number of endpoints. Table 9-9 shows the standard interface descriptor. 9.6.3 InterfaceThis descriptor describes a spe... -
4.4.1 Host Controller Communications Area Format
4.4.1 主机控制器通信区（HCCA）格式 偏移地址 大小（字节） 名称 读写权限 描述 0x00 128 HccaInterruptTable R 这32个双字是指向中断 端点描述符（ED） 的指针。 0x80 2 HccaFrameNumber W 包含当前帧号。此值由主机控制器（HC）在开始处理该帧... -
9.6 Standard USB Descriptor Definitions
9.6 Standard USB Descriptor Definitions The standard descriptors defined in this specification may only be modified or extended by revision of the Universal Serial Bus Specifica... -
11 USB HUB 集线器规范
Chapter 11 Hub Specification第 11 章 集线器规范 This chapter describes the architectural requirements for the USB hub. It contains a description of the two principal sub-blocks: the Hub...