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 Repeater and the Hub Controller. The chapter also describes the hub’s operation for error recovery, reset, and suspend/resume. The second half of the chapter defines hub request behavior and hub descriptors.
本章描述 USB 集线器的架构要求。它包含对两个主要子模块：集线器中继器和集线器控制器的描述。本章还描述了集线器在错误恢复、复位以及挂起/恢复方面的操作。本章后半部分定义了集线器请求行为与集线器描述符。

The hub specification supplies sufficient additional information to permit an implementer to design a hub that conforms to the USB specification.
本集线器规范提供了充分的附加信息，以使实现者能够设计出符合 USB 规范的集线器。