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Method and system for transmitting DDR (double data rate) controller port command

A technology of controller and memory controller, which is applied in the computer field and can solve problems such as inconvenience

Active Publication Date: 2014-01-08
RAMAXEL TECH SHENZHEN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In summary, the existing DDR controller port command transmission technology obviously has inconvenience and defects in actual use, so it is necessary to improve it

Method used

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  • Method and system for transmitting DDR (double data rate) controller port command
  • Method and system for transmitting DDR (double data rate) controller port command
  • Method and system for transmitting DDR (double data rate) controller port command

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Embodiment Construction

[0055] In order to make the object, technical solution and advantages of the present invention clearer, the present invention 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 invention, not to limit the present invention.

[0056] see image 3 , the present invention provides a system 100 for command transmission of a double-rate synchronous dynamic random access memory (DDR) controller port, the double-rate synchronous dynamic random access memory controller includes a plurality of ports, a plurality of advanced high-performance bus masters Respectively connected to a port in the plurality of ports, including:

[0057] The preset module 10 is configured to preset each port of the double-rate synchronous dynamic random access memory controller connected to the advanced high-performance bus master device to obtain the...

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Abstract

The invention discloses a method and system for transmitting port commands of a double data rate synchronous dynamic random access memory (DDR) controller. The method comprises the following steps: A, presetting the ports of the DDR controller connected with each advanced high-performance bus master device to obtain an upper limit value and a lower limit value of an arbitration rate arbitrated by the DDR controller; B, carrying out permuted arbitration on multiple ports by the DDR controller to acquire the arbitration rate of each port at the present; and C, according to the preset upper limit value and lower limit value of the arbitration rate and the acquired arbitration rate of each port at the present, controlling the command transmission between the multiple advanced high-performance bus master devices and the DDR controller through the multiple ports. Thus, the method and the system provided by the invention can improve the arbitration efficiency and the working performance of the DDR controller ports and optimize the command transmission of the DDR controller ports.

Description

technical field [0001] The invention relates to the field of computers, in particular to a method and a system for transmitting a DDR controller port command. Background technique [0002] DDR (Double Data Rate SDRAM, double-rate synchronous dynamic random access memory) controller based on AHB (Advanced High-performance Bus) bus usually has multiple AHB bus ports, and each port is connected to an AHB MASTER (advanced high-performance bus master device), when multiple MASTERs access the DDR controller at the same time, the DDR controller needs to properly handle the requests of these MASTERs. The DDR controller efficiently processes the command requests from the AHB MASTER, which can greatly improve the working efficiency of the DDR controller. [0003] At present, to process multiple MASTER command requests, the round robin (round robin) + port priority setting algorithm is usually used. Taking 8 AHB ports as an example, the priorities of the ports are set to decrease seq...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/18
Inventor 田劲朱从义张耀辉
Owner RAMAXEL TECH SHENZHEN