公开(公告)号：US12117955B2

公开(公告)日：2024-10-15

申请号：US17951473

申请日：2022-09-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Er Nie ,  Kun Wang ,  Pan Li

IPC: G06F13/14 ,  G06F13/40 ,  G06F13/42

CPC classification number: G06F13/423 ,  G06F13/405

Abstract: This application provides a spread spectrum clock negotiation method, and a peripheral component interconnect express device and system, to implement dynamic negotiation between a transmit end and a receive end on an SSC capability in the peripheral component interconnect express system. The method includes: A second PCIe device generates first indication information, where the first indication information is used to indicate whether the second PCIe device has a spread spectrum clock capability. The second PCIe device sends the first indication information to a first PCIe device. The first PCIe device determines, based on the first indication information, whether to perform spread spectrum clock on a reference clock of the first PCIe device.