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A kind of access method and controller of flash memory medium

An access method and controller technology, applied in the storage field, can solve problems such as waste of waiting time and low efficiency of operation instruction execution

Active Publication Date: 2020-04-14
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difference in the execution time of different basic instructions, the controller will waste a lot of waiting time to wait for the current instruction to be executed by the flash medium before sending a new instruction, resulting in low efficiency of operation instruction execution

Method used

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  • A kind of access method and controller of flash memory medium
  • A kind of access method and controller of flash memory medium
  • A kind of access method and controller of flash memory medium

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Embodiment Construction

[0061] It should be noted that the terms used in the embodiments of the present invention are for the purpose of describing specific embodiments, not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items. In addition, the terms "first", "second", "third" and "fourth" in the description and claims of the present invention and the above drawings are used to distinguish different objects, rather than to describe specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comp...

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Abstract

The present application discloses a flash memory medium access method, including: a controller selects a target function queue from N function queues according to predefined rules; wherein, the target function queue is a non-empty queue, and the Die associated with the target function queue The flash memory medium is in an idle state, N is an integer greater than 1; a basic instruction is taken out from the target function queue; a Die associated with the target function queue is determined according to the preset queue mapping information; wherein, the controller is connected to at least one flash memory medium , at least one flash memory medium includes N Dies, and the queue mapping information indicates that the N functional queues and N Dies are in a one-to-one mapping relationship; according to the preset signal generation rules, the timing signals corresponding to the basic instructions are generated, and the associated Dies are located flash media to send timing signals. By adopting the invention, the execution efficiency of flash medium instructions and the compatibility of the controller to different flash mediums can be improved.

Description

technical field [0001] The invention relates to the storage field, in particular to a method for accessing a flash memory medium and a controller. Background technique [0002] Solid State Drive (SSD) is more and more widely used because of its advantages of fast access speed and good shock resistance. The main storage medium of solid-state hard disk is flash memory medium, such as NAND Flash, a NAND Flash is a device (device), a device can be composed of one or more chips (Die), a chip can be divided into multiple flash memory chips (Plane), A flash memory slice can be divided into several blocks (Block), and a block is divided into many pages (Page). The basic unit of data read and write operations of NAND Flash is a page, and data is erased in units of blocks. [0003] The NAND Flash produced by different NAND Flash manufacturers has different modes, speeds, commands and protocols, and even the corresponding modes, speeds, commands and protocols of different processes a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
CPCG06F3/0604G06F3/0659G06F3/0679G06F13/1689G06F13/1694G06F12/0246G06F12/063G06F13/16G06F13/1668G06F13/4234G06F2212/2022
Inventor 李涛周冠锋李生
Owner HUAWEI TECH CO LTD
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