Memory system and memory access method

A memory system and a technology for accessing memory, which is applied to instruments, electrical digital data processing, etc., can solve problems such as high cost and large delay, and achieve the effect of reducing quantity and cost

Active Publication Date: 2010-12-22
MEDIATEK INC
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Problems solved by technology

[0003] In the prior art, different memory access requests of different processors to access memory need to be converted from one clock domain to

Method used

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  • Memory system and memory access method
  • Memory system and memory access method
  • Memory system and memory access method

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[0028] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the embodiments of the present invention in detail with reference to the accompanying drawings. Here, the illustrative embodiments of the present invention and the description thereof are used to explain the present invention, but not as a limitation to the present invention.

[0029] Certain words are used in the description and claims to refer to specific components. A person of ordinary skill in the art should understand that manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in functions of components as a criterion. The "including" and "including" mentioned in the claims throughout the specification are open-ended terms, so they should be interpreted as "including but not limited to". In addition, t...

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Abstract

The invention discloses a memory system and a memory access method. The memory system comprises: a first processor that accesses memory according to a first clock frequency; a second processor that accesses memory according to a second clock frequency; a memory device configurable to selectively operate according to the first clock frequency or the second clock frequency; and a memory controller to enable dynamic configuration of organization of the memory device to allow a first portion of the memory device to be accessed by the first processor according to the first clock frequency and a second portion of the memory device to be accessed by the second processor according to the second clock frequency. The number of the required memory is reduced and the cost of the whole system is correspectively reduced.

Description

Technical field [0001] The invention relates to a memory system and a method for accessing the memory. Background technique [0002] A system on a chip (System On a Chip, SoC) has multiple embedded (embedded) processors, where each processor uses unique memory access timing and data bus width requirements when accessing the memory. In one implementation, two embedded processors each access a separate embedded memory module according to their native access timing scheme. In another implementation, two processors with different memory access timing schemes can use a bridging process to access a shared memory device. For example, if the first processor is designated to access the memory according to the first clock frequency, the second processor is designated to access the memory according to the second clock frequency, and the shared memory module is configured to access the memory according to the first clock frequency. The first processor accesses the shared memory module acco...

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Application Information

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IPC IPC(8): G06F13/16
CPCG06F13/1652
Inventor 凯瑞·安·欧布伦乔治·拉提摩琼恩·索衣伦森马修·B·罗特里吉保罗·威廉·霍里斯
Owner MEDIATEK INC
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