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Synchronization method and device for asynchronous input signal, central processing unit, chip

A technology of asynchronous input and synchronization device, applied in the direction of generating/distributing signals, etc., can solve problems such as failure to find synchronizer failures, and achieve the effect of ensuring safety and reliability

Active Publication Date: 2021-10-08
BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a method and device for synchronizing an asynchronous input signal, so as to at least solve the problem that the failure of the synchronizer cannot be found in the above-mentioned method of synchronizing the asynchronous input signal

Method used

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  • Synchronization method and device for asynchronous input signal, central processing unit, chip
  • Synchronization method and device for asynchronous input signal, central processing unit, chip
  • Synchronization method and device for asynchronous input signal, central processing unit, chip

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Embodiment 1

[0050] figure 2 It is a flowchart of a method for synchronizing an asynchronous input signal provided by Embodiment 1 of the present invention. The method for synchronizing an asynchronous input signal in this embodiment is used in a dual-core lockstep system, and the dual-core lockstep system includes a first core and a second core. Such as figure 2 As shown, the method includes the following steps:

[0051] S1. Input the asynchronous input signal into the first synchronizer and the second synchronizer at the same time, the first synchronizer is the same as the second synchronizer, that is, the structures, functions and parameters of the first synchronizer and the second synchronizer are the same same.

[0052] S2. Check the output signal of the first synchronizer and the output signal of the second synchronizer.

[0053] Step S2 includes the following sub-steps:

[0054] S21. Determine whether the output signal of the first synchronizer is the same as the output signa...

Embodiment 2

[0065] image 3 It is a flowchart of a method for synchronizing an asynchronous input signal provided by Embodiment 2 of the present invention. The method for synchronizing an asynchronous input signal in this embodiment is used in a dual-core lockstep system, and the dual-core lockstep system includes a first core and a second core. Such as image 3 As shown, the method includes the following steps:

[0066] S1. Input the asynchronous input signal into the first synchronizer and the second synchronizer at the same time, the first synchronizer is the same as the second synchronizer, that is, the structures, functions and parameters of the first synchronizer and the second synchronizer are the same same.

[0067] S2. Check the output signal of the first synchronizer and the output signal of the second synchronizer.

[0068] Step S2 includes the following sub-steps:

[0069] S21. Determine whether the output signal of the first synchronizer is the same as the output signal ...

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Abstract

The invention relates to the field of chips, and provides a synchronization method and device for an asynchronous input signal, a central processing unit, and a chip. The method for synchronizing the asynchronous input signal is used in a dual-core lockstep system, the dual-core lockstep system includes a first core and a second core, and the method includes: simultaneously inputting the asynchronous input signal into the first synchronizer and the second synchronizer ; Checking the output signal of the first synchronizer and the output signal of the second synchronizer. The present invention uses two synchronizers for comparative detection, and can capture the failure of any synchronizer according to the comparison verification result information of the output signals of the two synchronizers, thereby ensuring the safety and reliability of the dual-core lockstep system.

Description

technical field [0001] The invention relates to the field of chips, in particular to a method for synchronizing an asynchronous input signal, a device for synchronizing an asynchronous input signal, a central processing unit and a chip. Background technique [0002] With the development and progress of integrated circuit technology, the application of embedded CPU (central processing unit, central processing unit) in the field of industrial control is becoming more and more extensive. In this field, the safety and reliability of the CPU is one of the core indicators. Among the many design methods to improve the safety and reliability of the CPU, the effect of the dual-core lockstep technology is the most significant. Dual-core lockstep technology uses two CPU cores with identical hardware circuits, the executed instructions are identical, and the input signals are also identical. In the dual-core lockstep design, the input signal is divided into synchronous input signal and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/12
CPCG06F1/12
Inventor 燕雪松张海峰原义栋赵东艳吴红梅刘亮张茜歌侯健潮
Owner BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY
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