公开(公告)号：US20210263879A1

公开(公告)日：2021-08-26

申请号：US17315715

申请日：2021-05-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yongyao LI ,  Fei LUO ,  Jiankang LI ,  Jie WAN ,  Gongxian JIA

IPC: G06F13/42 ,  H04L25/03 ,  G06F13/40

Abstract: A retimer application system is provided, which includes a primary chip, a retimer, and a secondary chip. After first link training is completed, the retimer is configured to store, in a first storage area, an equalization parameter corresponding to each rate during the first link training, and data stored in the first storage area is not lost when the retimer performs a reset operation. The retimer is further configured to: receive a reset indication, and perform the reset operation according to the reset indication. The primary chip and the secondary chip are configured to perform second link training triggered by the reset indication. During the second link training, the retimer is further configured to: invoke the equalization parameter, and transparently transmit a training sequence in the second link training to the primary chip or the secondary chip based on the equalization parameter.

公开(公告)号：US20210297228A1

公开(公告)日：2021-09-23

申请号：US17321707

申请日：2021-05-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yongyao LI ,  Fei LUO ,  Jiankang LI ,  Jiang ZHU ,  Jieping ZENG

IPC: H04L7/00 ,  G06F13/42

Abstract: This application provides a drive and a data transmission method, to implement low-latency transmission. The drive includes a CDR circuit, an elastic buffer, a receiver circuit, and a transmitter circuit. The CDR circuit is configured to recover a receive clock from a received signal. The receiver circuit is configured to recover sent data from the received signal by using the receive clock. The elastic buffer is configured to move the sent data in by using the receive clock and move the data out by using the receive clock. The transmitter circuit is configured to send the sent data from the elastic buffer by using the receive clock.