Jump edge detection method and device with glitches capable of being removed

A detection method and detection device technology, applied in pulse shaping and other directions, can solve the problems of high cost, insufficient adaptability, complex burr filtering circuit, etc., and achieve the effect of easy implementation and simple circuit

Active Publication Date: 2015-03-25
WUHAN RUINAJIE ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a jump edge detection method and device capable of filtering out glitches, aiming to solve the problem that the glitch filtering circuit in the prior art is relatively complicated, the width of the filtered glitches is relatively fixed, and the adaptability is insufficient. When it is necessary to perform edge detection, the edge detection circuit and the glitch filtering circuit must be set at the same time, which is a problem of high cost.

Method used

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  • Jump edge detection method and device with glitches capable of being removed
  • Jump edge detection method and device with glitches capable of being removed
  • Jump edge detection method and device with glitches capable of being removed

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Embodiment 1

[0026] figure 1 The implementation process of the edge detection method that can filter out glitches provided by Embodiment 1 of the present invention is shown, and the details are as follows:

[0027] In step S101, according to the type of the edge and the timing of the edge, the master controller sets the edge sequence for sampling through the sequence configuration register.

[0028] In this embodiment, the main controller configures and modifies the jump edge sequence used for sampling of the sequence configuration register through the data bus, and the length of the sequence configuration register is a first data length, and the first data length is greater than The sum of all high-level sampling points and all low-level sampling points in a preset jump edge timing, where different configurations are required for the detection of the upper and lower jump edges, and the width of the filtered glitch needs to be determined according to the sampling clock. Estimation setting...

Embodiment 2

[0050] Figure 5 A specific structural block diagram of the glitch-filtering edge detection device provided by Embodiment 2 of the present invention is shown. For convenience of description, only parts related to the embodiment of the present invention are shown. In this embodiment, the edge detection device capable of filtering out glitches includes: .

[0051] Wherein, the sequence configuration unit 51 is used for setting the jump edge sequence for sampling according to the type of the jump edge and the timing of the jump edge by the main controller through the sequence configuration register;

[0052] The data sampling unit 52 is used for sampling the interface data at a preset frequency by the sampling clock;

[0053] The data storage unit 53 is used to store the interface data through a displacement memory, wherein the interface data enters from the left end of the shift register, and each time a bit of interface data comes in, the shift register is shifted to the right...

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Abstract

The invention belongs to the technical field of integrated circuit signal processing, and provides a jump edge detection method and device with glitches capable of being removed. The method comprises the steps that according to the type and the timing sequence of jump edges, a main controller is provided with a jump edge sequence used for sampling through a sequence configuration register; a sampling clock samples interface data at a preset frequency; the interface data are stored through a displacement register, wherein the interface data enter in from the left end of the displacement register, and the displacement register is moved rightwards by a bit when one bit of interface data enters in; a comparison register sets the comparison bits of the sequence configuration register and the displacement register, whether the given bit data from the left in the displacement register and the corresponding bit data in the jump edge sequence in the sequence configuration register are equal or not is compared, and if yes, it is displayed that the effective jump edge is achieved. The jump edge detection method and device can detect the jump edge and filter out the glitches at the same time.

Description

technical field [0001] The invention belongs to the technical field of integrated circuit signal processing, and in particular relates to an edge detection method and device capable of filtering burrs. Background technique [0002] Jump edge detection is widely used in various transmission protocols, and is used as a signal start flag, completion flag, sleep wake-up signal, etc. Therefore, the detection of the rising edge and the falling edge of the interface signal has become a required function of many electronic devices. With the development of portable and miniaturized electronic equipment, the high-density device layout in the equipment motherboard makes noise one of the main problems in circuit design, and noise and interference can easily cause glitches in chip interface signals. The so-called glitch is a signal jump that is less than the defined minimum time. Sampling the glitch signal will cause a circuit or system error response, resulting in system instability or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K5/01
Inventor 陈毅成彭颖张明宇
Owner WUHAN RUINAJIE ELECTRONICS TECH
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