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Storage device, access method for mobile terminal and data, and frequency modulation method

A mobile terminal and storage device technology, applied in memory systems, data processing power supplies, electrical digital data processing, etc., can solve the problem that the MMU unit cannot read the first-level page table, etc., so as to shorten the waiting time, improve the work efficiency, reduce the The effect of the number of shutdowns and restarts

Inactive Publication Date: 2010-06-16
HUAWEI DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a storage device, a mobile terminal, a data access method, and a frequency modulation method, which are used to solve the problem in the prior art that the MMU unit cannot read the primary page table when the bus clock frequency is adjusted

Method used

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  • Storage device, access method for mobile terminal and data, and frequency modulation method
  • Storage device, access method for mobile terminal and data, and frequency modulation method
  • Storage device, access method for mobile terminal and data, and frequency modulation method

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Embodiment Construction

[0039] The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0040] Specific embodiment one of the storage device of the mobile terminal according to the embodiment of the present invention

[0041] figure 1 It is a schematic structural diagram of Embodiment 1 of the storage device of the mobile terminal according to the embodiment of the present invention. Such as figure 1 As shown, the storage device of the mobile terminal in the embodiment of the present invention includes: an MMU unit 101, a main memory 102, an auxiliary memory 103 and a control register 104, wherein the main memory 102 is used to store secondary page tables, programs and data, usually synchronous Dynamic random access memory (Synchronous Dynamic Random Access Memory, SDRAM) or double rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR), the data in the main memory is stored in the capacito...

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Abstract

The invention relates to a storage device, an access method for a mobile terminal and data and a frequency modulation method. The storage device comprises a main memory, an auxiliary memory, a control register and a memory management unit (MMU), wherein the main memory is used for storing a two-level page, program and data; the auxiliary memory is a static random access memory (SRAM) for storing a one-level page; the control register is used for storing and controlling the control numerical code of the mobile terminal system; and the MMU is respectively connected with the main memory, the auxiliary memory and the system control register and is used for converting virtual addresses in the one-level page and the two-level page into physical addresses of the program or data. The embodiment of the invention avoids the situation that the MMU cannot access the one-level page and is closed while adjusting the bus clock frequency when the one-level page is stored in the main memory, thereby reducing the frequency of repeatedly closing and re-starting of the MMU, shortening the waiting time of a central processing unit (CPU) and improving the work efficiency of CPU.

Description

technical field [0001] The invention relates to mobile terminal technology, in particular to a storage device, a mobile terminal, a data access method, and a frequency modulation method. Background technique [0002] With the popularization and development of mobile terminals, mobile terminals have more and more functions, and their performance is getting better and better, but more functions and better performance often need to consume more power. Due to the increase in power consumption, It is bound to reduce the standby time and working time of the mobile terminal. [0003] The current of the chip digital system of the mobile terminal is the working current and the static current when it is working and standby, respectively, and the magnitude of the current and frequency basically maintains a linear relationship. , the working current is far greater than the static current, and the current and voltage of the digital system unit of the chip are proportional to its working...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/10G06F1/32G06F12/1009
Inventor 刘苏
Owner HUAWEI DEVICE CO LTD
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