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

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...

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

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