APPARATUS AND METHOD FOR TRANSMITTING MAP INFORMATION IN A MEMORY SYSTEM

A controller for controlling a memory device can include first circuitry configured to perform a read operation in response to a read request, wherein the read operation includes an address translation, which is performed optionally in response to an inputted physical address, for associating a logical address inputted along with the read request with a physical address, and second circuitry configured to determine a usage frequency regarding map data used for the address translation. The first circuitry and the second circuitry can work independently and separately of each other.