公开(公告)号：US20200265881A1

公开(公告)日：2020-08-20

申请号：US16277804

申请日：2019-02-15

Applicant: Apple Inc.

Inventor： Robert E. Jeter ,  Rakesh L. Notani ,  Venkata R. Malladi

IPC: G11C7/22

Abstract: A method and apparatus for performing memory calibration with endpoint replay is disclosed. A first calibration of a data strobe signal in a memory subsystem is performed. The first calibration includes determining initial values of first and second endpoints indicative of first and second delay values, respectively, applied to the data strobe signal. A second calibration of the data strobe signal is performed around these endpoints, within a range thereof that is less than a full range there between. Based on the second calibration, the endpoints are adjusted.

公开(公告)号：US10991403B2

公开(公告)日：2021-04-27

申请号：US16277804

申请日：2019-02-15

Applicant: Apple Inc.

Inventor： Robert E. Jeter ,  Rakesh L. Notani ,  Venkata R. Malladi

IPC: G11C7/22

Abstract: A method and apparatus for performing memory calibration with endpoint replay is disclosed. A first calibration of a data strobe signal in a memory subsystem is performed. The first calibration includes determining initial values of first and second endpoints indicative of first and second delay values, respectively, applied to the data strobe signal. A second calibration of the data strobe signal is performed around these endpoints, within a range thereof that is less than a full range there between. Based on the second calibration, the endpoints are adjusted.