1 results about "Root complex" patented technology

The invention discloses a PCIe link width dynamic configuration method, which comprises the following steps: acquiring link channel width information of an interface, and storing the link channel width information in a CPLD register; reading link channel width information in the CPLD register in response to the initial configuration of the link channel width of the root complex, and configuring the link channel width for the root complex according to the link channel width information; in response to the initial configuration of the link channel width of the PCIe switch, reading the link channel width information in the CPLD register, and judging whether the interface channel width of the down link of the PCIe switch is consistent with the link channel width information or not; and if the interface channel width of the PCIe switch downlink is inconsistent with the link channel width information, modifying the configuration of the channel width of the PCIe switch downlink according to the link channel width information. The invention further discloses a corresponding device and apparatus and a readable storage medium. Dynamic configuration of interface cards with different link widths is supported, PCIe channel resources are fully utilized, and product competitiveness is improved.