Nonvolatile memory device, data storage device including the same and operating method thereof

A data storage device comprising:

• a nonvolatile memory device comprising a plurality of dies, wherein each of the plurality of dies stores mapping information of logical block addresses which are previously assigned;
• a memory configured to cache mapping information of a logical block address received from a host device;
• and
• a controller configured to transfer a composite read command and location information to a target die among the plurality of dies, when a logical block address which is not cached in the memory is received from the host device, wherein the location information indicates where mapping information of the logical block address is stored, and the target die corresponds to the logical block address.

An operating method of a data storage device which includes a nonvolatile memory device including a plurality of dies configured to store mapping information of a previously assigned logical block address group and a controller configured to control the nonvolatile memory device, the operating method comprising:

• determining, by the controller, whether a map cache hit for a logical block address received from a host device occurs;
• transferring, by the controller, a composite read command and location information to a target die corresponding to the logical block address, the location information indicating where mapping information of the logical block address is stored, when it is determined that a map cache miss occurs;
• and
• performing, by the target die, a first operation of translating the logical block address into a physical block address based on the location information and a second operation of reading user data stored in a region of the physical block address and outputting the read user data to the controller.