Patent ID: 9043528
Filing Date: 2015-05-26
Classification: G06F

Abstract:
1. A bridge between a Peripheral Component Interconnect Express interface and a Universal Serial Bus 3.0 compatible device, the bridge comprising: a Peripheral Component Interconnect Express (PCI-E) interface supporting at least two lanes for coupling to a host, wherein each lane of the at least two lanes provides a first highest data transmission speed; an Extensible Host Controller Interface (xHCI) coupled to the Peripheral Component Interconnect Express interface for storing data transmitted by the Peripheral Component Interconnect Express interface; and a Universal Serial Bus (USB) 3.0 compatible root hub comprising a first controller and a second controller, wherein the first controller and the second controller are used for controlling data transmission of four ports; wherein when a sum of at least one second highest data transmission speed provided by at least one USB 3.0 compatible device coupled to the bridge is not greater than a sum of first highest data transmission speeds provided by the at least two lanes, one port of the four ports coupled to one of the at least one USB 3.0 compatible device provides the first highest data transmission speed thereof; and when the sum of the at least one second highest data transmission speed provided by the at least one USB 3.0 compatible device coupled to the bridge is greater than the sum of the first highest data transmission speeds provided by the at least two lanes, a data transmission speed provided by the each port of the four ports is determined by a number of the at least one USB 3.0 compatible device coupled to one of the first controller and the second controller controlling the each port.