公开(公告)号：US20240427724A1

公开(公告)日：2024-12-26

申请号：US18829008

申请日：2024-09-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Er NIE ,  Kun WANG ,  Pan LI

IPC: G06F13/42 ,  G06F13/40

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.

公开(公告)号：US20240104046A1

公开(公告)日：2024-03-28

申请号：US17951473

申请日：2022-09-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Er NIE ,  Kun WANG ,  Pan LI

IPC: G06F13/42 ,  G06F13/40

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.

公开(公告)号：US20210075647A1

公开(公告)日：2021-03-11

申请号：US17100033

申请日：2020-11-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yongyao LI ,  Fei LUO ,  Er NIE

IPC: H04L25/03 ,  H04B1/38 ,  G06F13/42

Abstract: A fast equalization method is provided, which includes: storing a receive parameter and a transmit parameter, of each of a primary chip and a secondary chip, that meet a link stability requirement and that are obtained when link equalization is previously performed; and when determining that link equalization needs to be performed, configuring, as first fast equalization timeout duration, a larger value in initial fast equalization timeout duration of the primary chip and initial fast equalization timeout duration of the secondary chip, and invoking the foregoing receive and transmit parameters, so that the primary chip and the secondary chip perform a current time of link equalization based on the first fast equalization timeout duration and the foregoing transmit and receive parameters.

公开(公告)号：US20240388539A1

公开(公告)日：2024-11-21

申请号：US18752382

申请日：2024-06-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Er NIE ,  Chuanning CHENG

IPC: H04L47/25 ,  G06F13/42

Abstract: Embodiments of this application provide a method and apparatus for wired data transmission. The method is applied at a first end, data transmission is performed between the first end and a second end over a first data link, and the first data link is a serial data link or a parallel data link. The method includes: receiving a second rate range sent by the second end, where the second rate range belongs to a transmission rate range supported when the second end receives data over the first data link; sending a second training bitstream to the second end, where a first rate belongs to the second rate range; and sending the data to the second end at the first rate over the first data link. Embodiments are implemented, to change a transmission rate of a data link in a rate range, and reduce a communication resource waste.

公开(公告)号：US20230367728A1

公开(公告)日：2023-11-16

申请号：US18358217

申请日：2023-07-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Er NIE ,  Kun WANG ,  Pan LI

IPC: G06F13/40

CPC classification number: G06F13/4018 ,  G06F13/4022

Abstract: This application relates to a link width adjustment method and apparatus. The method includes: sending, to a second-end apparatus through a first channel, a first packet indicating to perform link width switching; receiving a second packet that is returned by the second-end apparatus and that indicates that the link width switching is agreed on; sending, to the second-end apparatus through a second channel, a first bit stream to test the second channel for data communication; and sending a data stream to the second-end apparatus through the first channel and the second channel.

公开(公告)号：US20230094563A1

公开(公告)日：2023-03-30

申请号：US17959490

申请日：2022-10-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yongyao LI ,  Fei LUO ,  Er NIE

IPC: H04L25/03 ,  G06F13/42 ,  H04B1/38

Abstract: A fast equalization method is provided, which includes: storing a receive parameter and a transmit parameter, of each of a primary chip and a secondary chip, that meet a link stability requirement and that are obtained when link equalization is previously performed; and when determining that link equalization needs to be performed, configuring, as first fast equalization timeout duration, a larger value in initial fast equalization timeout duration of the primary chip and initial fast equalization timeout duration of the secondary chip, and invoking the foregoing receive and transmit parameters, so that the primary chip and the secondary chip perform a current time of link equalization based on the first fast equalization timeout duration and the foregoing transmit and receive parameters.