Abstract: A controller core for controlling communication of Peripheral Component Interconnect (PCI) Express, the controller core comprises: a standard configuration register unit, a capabilities register unit, a logic unit and a bond option signal. The standard configuration register unit is configured for controlling the communication of the PCI-E, and supporting the controller core been embedded internally and accessible from exterior. The logic unit applied to associate with the standard configuration register unit and the capabilities register unit for identifying a hot insertion and removal from exterior of the controller core; and the bond option signal is used to enable and disenable the standard configuration register unit, the capabilities register unit, and the logic unit respectively.

Abstract: An adaptor for adapting one of a first device complying with a first bus, and a second device complying with a second bus to a Peripheral Component Interconnect Express (PCIe) interface. The adaptor comprises a first bridge for interconnecting the first bus with the PCIe bus, a second bridge for interconnecting the second bus with the PCIe bus, and a PCIe core coupled to the two bridges. A bond option signal is coupled to the two bridges and the PCIe core for enabling one of the two bridges, and one of the two bridges is configured by the PCIe core.