Flash memory controller, solid state disk, controller of solid state disk and flash memory command control method

Abstract

The embodiment of the invention relates to the field of solid state disk application. The invention discloses a flash memory controller, a solid state disk, a controller of the solid state disk and aflash memory command control method. The flash memory controller comprises at least one flash memory channel, each flash memory channel comprises an automatic command management module, an IO management module and a flash memory IO module, the automatic command management module is used for storing and managing microcodes corresponding to a plurality of flash memory commands, and each microcode isused for generating a flash memory command corresponding to the microcode; the IO management module is used for receiving the flash memory command sent by the automatic command management module; andthe flash memory IO module is used for receiving the flash memory command sent by the IO management module, analyzing the command, generating a corresponding operation time sequence and interacting with the flash memory medium. Flash memory command is generated through the hardware automatic command management module, and the software overhead of the solid state disk can be reduced by automatically sending the flash memory command according to the set condition, thereby reducing the burden of a processor and improving the performance of the solid state disk.

Description

technical field [0001] The invention relates to the application field of solid-state hard disks, in particular to a flash memory controller, a solid-state hard disk and its controller, and a flash memory command management method. Background technique [0002] Solid State Drives (SSD) are hard disks made of solid-state electronic storage chip arrays. Solid State Drives include a control unit and a storage unit (FLASH memory chip or DRAM memory chip). At present, a considerable part of the solid-state disk system has a dynamic random access memory (Dynamic Random Access Memory, DRAM), so the SSD has a relatively large data cache space for caching data. [0003] Flash memory (NAND Flash) is the main storage medium of SSD. Flash memory has now developed to 3D TLC, and its IO interface speed has grown to 1600MT; its development has also brought some problems, such as the increasing raw error bit rate (UBER), and the interface signal integrity (Signal Integrity, SI) design chall...

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention aims to provide a flash memory controller, a solid-state hard disk and its controller, and a flash memory command management method, which solve the problem that the existing solid-state hard disk is easy to increase the burden of the processor through command management through software, causing delays and affecting The performance of solid-state drives, thereby reducing the burden on the processor and improving the performance of solid-state drives

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