Device access method, device, controller and storage medium

An access method and controller technology, applied in the field of storage systems, can solve problems such as low device access performance, device limit access performance, complex interface timing, and access performance bottlenecks

Active Publication Date: 2020-07-07
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the improvement of system scale and complexity, the amount of data that needs to be stored/read in the Nand Flash device as the system storage unit increases rapidly, and the traditional device access method is likely to cause access performance bottlenecks, whether it is in the production stage of the equipment system, operation stage, there is an urgent demand for high-speed access to Nand Flash devices
Compared with Nor Flash devices, NandFlash devices have very complex interface timing, and the parameters of Nand Flash devices produced by different manufacturers are also very different. At present, there is an u

Method used

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  • Device access method, device, controller and storage medium
  • Device access method, device, controller and storage medium
  • Device access method, device, controller and storage medium

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Embodiment Construction

[0039] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0040] There are also examples of traditional Nand Flash controllers implemented by FPGAs, such as using FPGA devices to generate NandFlash access timing; Different timings to meet the device requirements, but the development of FPGA is difficult and the development efficiency is low. If you only write codes for a limited number of Nand Flash device models, you will undoubtedly face a large number of different types of Nand Flash devices produced by different manufacturers. A variety of FPGA software needs to be developed, resulting in a huge waste of manpower and time.

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Abstract

The invention relates to a device access method, a device, a controller and a storage medium. The device access method comprises the following steps: accessing the device to be accessed based on the access timing generated according to the parameter configuration value, wherein the parameter configuration value comprises a timing parameter configuration value, based on the key parameter set of thedevice to be accessed, the parameter configuration value is obtained by using numerical optimization algorithm to deal with the preset function model, the key parameter set includes device timing parameters, the preset function model aims to minimize the distance function, the distance function is the difference between the expected access throughput for accessing the device to be accessed and the ultimate throughput. The embodiments of the present invention fully parameterize to generate the access timing of the controller, and realize the approximation of the limiting access performance ofthe device to be accessed through abstract modeling of the device timing parameters and solving by using a numerical optimization algorithm inside the device.

Description

technical field [0001] The present application relates to the technical field of storage systems, in particular to a device access method, device, controller and storage medium. Background technique [0002] Compared with Nor Flash, Nand Flash has the characteristics of high storage density and fast erasing data, and is widely used in embedded systems. With the improvement of system scale and complexity, the amount of data that needs to be stored / read in the Nand Flash device as the system storage unit increases rapidly, and the traditional device access method is likely to cause access performance bottlenecks, whether it is in the production stage of the equipment system, operation stage, there is an urgent demand for high-speed access to Nand Flash devices. Compared with Nor Flash devices, the interface timing of Nand Flash devices is very complicated, and the parameters of Nand Flash devices produced by different manufacturers are also very different. At present, there i...

Claims

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Application Information

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IPC IPC(8): G06F13/16
CPCG06F13/1668
Inventor 刘德良李鹏程
Owner COMBA TELECOM SYST CHINA LTD
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