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Method of operating data storage device

  • US 9,933,974 B2
  • Filed: 11/04/2014
  • Issued: 04/03/2018
  • Est. Priority Date: 02/28/2014
  • Status: Active Grant
First Claim
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1. A method of operating a data storage device including a controller and a memory device, the method comprising:

  • generating mapping information in the controller, the mapping information defining relationships between physical addresses for the physical regions of the memory device and logical addresses for the logical partitions used to logically divide the physical memory space;

    by operation of the controller, storing the mapping information in the memory device in the form of mapping table;

    by operation of the controller, loading the mapping information from the memory device to the controller;

    receiving in the controller a single wipe device initialization command from a host; and

    in response to the single wipe device initialization command, executing a wipe device initialization operation that during a single time period initializes the entirety of the mapping table,wherein the wipe device initialization operation further comprises communicating a completion response from the data storage device to the host indicating completion of the wipe device initialization operation, and disabling in the data storage device any additional execution of the wipe device initialization operation, andwherein the disabling in the data storage device of any additional execution of the wipe device initialization operation comprises;

    receiving in the data storage device a setup bit in response to receipt of the completion response by the host;

    storing the setup bit in a write-once memory (WOM); and

    disabling the additional execution of the wipe device initialization operation based on the setup bit stored in the WOM.

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