Apparatus for transmitting map information in memory system
AssigneeSK hynix Inc.
InventorEu-Joon Byun
Life of this patent
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Abstract
A memory system may include: a nonvolatile memory device; and a controller suitable for generating first map information which maps physical addresses of the nonvolatile memory device to logical addresses received from a host, selecting some segments of the first map information as second map information, and outputting the second map information to the host, the controller may determine whether the second map information is updated, and may determine updated map segments as third map information, and the controller may output information to the host indicating the third map information corresponding to a command received from the host.
Claims10
A memory system comprising:
- a nonvolatile memory device;
- and
- a controller suitable for generating L2P mapping table
- wherein the controller:
- selects some regions of the L2P mapping table as L2P mapping entries,
- outputs the L2P mapping entries to the host in response for a first host command,
- selects some regions of the L2P mapping entries as L2P discard mapping entries, and
- outputs the L2P discard mapping entries to the host in response for a second host command after performing an operation corresponding to the second host command.
A controller controlling a nonvolatile memory device, the controller comprising:
- an operation management unit;
- and
- a map management unit,
- wherein the map management unit:
- generates L2P mapping table,
- selects some regions of the L2P mapping table as L2P mapping entries,
- selects some regions of the L2P mapping entries as L2P discard mapping entries,
- wherein the operation management unit:
- outputs the L2P mapping entries to an external in response for a first external command, and
- outputs the L2P discard mapping entries to the external in response for a second external command after performing an operation corresponding to the second external command.
A data processing system comprising:
- a host suitable for generating, changing or updating a logical block address corresponding to data;
- and
- a memory system including a nonvolatile memory device for storing the data,
- wherein the memory system:
- generates L2P mapping table,
- selects some regions of the L2P mapping table as L2P mapping entries,
- outputs the L2P mapping entries to the host in response for a first host command,
- selects some regions of the L2P mapping entries as L2P discard mapping entries, and
- outputs the L2P discard mapping entries to the host in response for a second host command after performing an operation corresponding to the second host command,
- wherein the host:
- stores the L2P mapping entries received from the memory system in a host memory after outputting the first host command to the memory system, and
- discards the L2P discard mapping entries received from the memory system among the L2P mapping entries stored in the host memory after outputting the second host command to the memory system.
Dependencies are inferred from the claim text.