公开(公告)号：US20210065757A1

公开(公告)日：2021-03-04

申请号：US17097680

申请日：2020-11-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yongyao Li ,  Jun Yu ,  Guoyu Wang ,  Jiankang Li ,  You Li ,  Ruihui Hong

IPC: G11C7/22 ,  G11C7/10 ,  G11C11/4076

Abstract: A controller for data strobe signal (DQS) position adjustment includes, when the controller obtains margin effective widths of all data signals in a transmission bus, it determines a left boundary and a right boundary based on the margin effective widths, where the left boundary is a largest value in minimum values of the margin effective widths of all the DQs, and the right boundary is a smallest value in maximum values of the corresponding margin effective widths when all the DQs are aligned with the left boundary. The controller calculates a first central position based on the left boundary and the right boundary, where the first central position is a center of a smallest margin effective width obtained after all the DQs are aligned during read data training, and adjusts a delay line (DL) of the DQS to the first central position.

公开(公告)号：US11430494B2

公开(公告)日：2022-08-30

申请号：US17097680

申请日：2020-11-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yongyao Li ,  Jun Yu ,  Guoyu Wang ,  Jiankang Li ,  You Li ,  Ruihui Hong

IPC: G11C7/22 ,  G11C7/10 ,  G11C11/4076

Abstract: A controller for data strobe signal (DQS) position adjustment includes, when the controller obtains margin effective widths of all data signals in a transmission bus, it determines a left boundary and a right boundary based on the margin effective widths, where the left boundary is a largest value in minimum values of the margin effective widths of all the DQs, and the right boundary is a smallest value in maximum values of the corresponding margin effective widths when all the DQs are aligned with the left boundary. The controller calculates a first central position based on the left boundary and the right boundary, where the first central position is a center of a smallest margin effective width obtained after all the DQs are aligned during read data training, and adjusts a delay line (DL) of the DQS to the first central position.