公开(公告)号：US11210226B2

公开(公告)日：2021-12-28

申请号：US16851572

申请日：2020-04-17

Applicant: Silicon Motion, Inc.

Inventor： Jui-Lin Yen ,  Sheng-Hsun Lin ,  Jian-Wei Sun

IPC: G06F12/0866

Abstract: A data storage device is provided. The data storage device includes a flash memory, a dynamic random access memory (DRAM), and a memory controller. The flash memory is configured to store a logical-to-physical mapping (L2P) table that is divided into a plurality of group-mapping (G2P) tables. The memory controller includes a first processing core and a second processing core. The first processing core receives a host access command from a host. When a specific G2P table corresponding to a specific logical address in the host access command is not stored in the DRAM, the first processing core determines whether the second processing core has loaded the specific G2P table from the flash memory to the DRAM according to the values in a first column in a first bit map and in a second column of a second bit map.