Storage device capable of being accessed through memory bus

Abstract

The embodiment of the invention provides a storage device capable of being accessed through a memory bus. The storage device comprises an interface controller, a storage module, a storage controller, a command register, a status register and a cache. In addition, the interface controller can be in electrical connection with a memory bank interface of a computer system. The interface controller receives an access command, for accessing the storage module, transmitted by a CPU. The interface controller writes the access command in the command register and records the current access status or result through the status register. The storage controller performs status setting on the status register according to the access command in the command register and performs corresponding read-write operations on the storage module. The storage device can be in electrical connection with the memory bank interface of the computer system, the size of the storage device is small, space is saved, and therefore the installation density and the storage capacity of the storage device are increased. As the command register and the status register are additionally arranged, the data access space of the storage device is not limited by addressing space provided by the CPU any longer.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a storage device accessed through a memory bus. Background technique [0002] With the development of information technology, especially the popularization of the Internet, the amount of various types of data is increasing rapidly, of which video data accounts for the main part. There is an urgent need for large-capacity, high-performance storage systems to effectively store and quickly access these data. [0003] Although traditional mechanical hard drives have mature technology, low cost, and large capacity, they have bottlenecks in performance and high power consumption, and have gradually given way to solid-state drives. Solid-state drives use semiconductor non-volatile memory to store data. Currently, non-volatile memory such as flash memory is used, which has advantages in performance, power consumption, and reliability, but the cost is relatively high. It is usually...

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This access method limits the

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