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Method for switching operating mode of main control chip and network equipment thereof

A working mode, the technology of the main control chip, applied in the electronic field, can solve the problems of destroying the continuity of the main control chip and reducing the execution efficiency of the switching process.

Active Publication Date: 2012-05-23
RUIJIE NETWORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, manually switching the working mode of the main control chip destroys the continuity of the operation of the main control chip, and also reduces the execution efficiency of the switching process

Method used

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  • Method for switching operating mode of main control chip and network equipment thereof
  • Method for switching operating mode of main control chip and network equipment thereof
  • Method for switching operating mode of main control chip and network equipment thereof

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Embodiment Construction

[0030] In order to improve the execution efficiency of the working mode switching process of the main control chip on the circuit board. In an embodiment of the present invention, a method for controlling a power supply circuit by using a complex programmable logic device (Complex Programmable Logic Device, CPLD) and changing the state of a configuration pin is provided to realize changing the CPU working mode. Among them, CPLD is a specific circuit structure designed and generated by the designer according to the usage requirements, and is used to complete the specified circuit function. The CPLD can start to work normally after the circuit is powered on, and maintains the current state of the internal registers without powering off, that is, maintains the information currently stored in the internal registers. In the embodiment of the present invention, by using the characteristic of CPLD, after the CPU enters the reset state, the CPLD performs operations such as power-off, ...

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Abstract

The invention provides a method for switching the operating mode of a main control chip, comprising the following steps: sending reset signals to a CPLD by the main control chip and indicating the CPLD to switch the operating mode of the main control chip to the second operating mode when the main control chip determines that the first operating mode in operation is different from the second operating mode appointed by users; cutting off the power supply of the main control chip and the peripheral configuring circuit thereof by the CPLD, and resetting the pin value of the power supply of the main control chip and the peripheral configuring circuit according to the configuring parameter corresponding to the second operating mode; and turning on the power supply of the main control chip andthe peripheral circuit, wherein the main control chip starts to operate in the second operating mode according to the reset pin value. Therefore, the operating mode switching flow which can be realized only by changing hardware can be completely software, thus greatly improving usability and maintainability of the system and also improving the executing efficiency of the switching flow. The invention also provides a circuit board.

Description

technical field [0001] The invention relates to electronic technology, in particular to a method for switching chip working modes and network equipment thereof. Background technique [0002] The main control chip, usually a central processing unit (CPU), is the core component of the entire circuit system, and is the computing center and control center of a device. In a single-CPU circuit, each instruction in the circuit system is read and controlled by the CPU. With the development of technology, in order to meet the functional requirements of various circuits, the CPU supports more and more working modes, for example, working modes at multiple clock frequencies, working modes at multiple interface types, and multiple address Configure the downlink working mode and so on. [0003] In the prior art, the determination of the working mode of the main control chip usually adopts the following two methods: [0004] The first method is: determine through the configuration infor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/05
Inventor 张凯
Owner RUIJIE NETWORKS CO LTD
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