公开(公告)号：US11500728B2

公开(公告)日：2022-11-15

申请号：US17374389

申请日：2021-07-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jinho Seo ,  Sanghyun Eom ,  Taecjun Kim ,  Jinwoo Jung ,  Eunsik Choi

IPC: G06F11/00 ,  G06F11/14 ,  G06F9/4401 ,  G06F11/07

Abstract: A storage controller includes a host interface configured to perform communication with a host device, a memory interface configured to perform communication with a nonvolatile memory device, a higher-level controller, and a lower-level controller. The higher-level controller issues operations to be performed by the nonvolatile memory device based on requests transferred through the host interface. The lower-level controller includes an operation memory configured to store an operation code and operation data. The lower-level controller controls the memory interface based on the operation code and the operation data such that the nonvolatile memory device performs issued operations received from the higher-level controller. The higher-level controller performs, when an error occurs in the lower-level controller, an error restoring operation based on state information of the lower-level controller to restore the lower-level controller to a previous state corresponding to a state before the error occurs.