Systems and methods for DMA controller for checking the status of metadata prior to or simultaneously when transferring data to host

摘要

A memory controller is provided which includes a host interface configured to provide an interface for communication with a host; a buffer memory configured to store user data and metadata of the user data; and a DMA controller configured to access the buffer memory to check the metadata and to provide user data corresponding to a logical block address requested from a host to the host interface according to the checking result. The metadata includes status information of the user data stored at the buffer memory. Before providing the host interface with user data corresponding to a first logical block address requested from the host, the DMA controller checks metadata of user data corresponding to a second logical block address requested from the host.

主权项

1. A method of operating a memory controller, the method comprising:
receiving a read request for first user data corresponding to a first logical block address from a host; receiving a read request for second user data corresponding to a second logical block address from the host; checking metadata associated with the first user data; checking metadata associated with the second user data; transferring the first user data to the host before or after simultaneously checking the metadata associated with the second user data; and transferring the second user data to the host.