Burr removing device and method

Abstract

A method for removing bur off includes automatically closing turnover function by turnover follow-up circuit when turnover output level is turned over, having a preset time delay under control of turnover control circuit then starting turnover function of turnover follow-up circuit. The device for realizing said method is also disclosed.

Description

technical field [0001] The invention relates to a digital circuit technology, in particular to a burr eliminating device and method. Background technique [0002] In any digital circuit design, the correctness of the signal is very important. When there are burrs in the signal, it often causes false triggering and false sampling of the circuit, resulting in the operation error of the entire circuit system. [0003] Although there are many reasons for signal glitches, such as inter-signal interference, impedance mismatch, signal reflection, logic competition, and hazards, etc., these glitches are mostly generated during the rising and falling edges. [0004] In the design of digital circuits, especially high-speed digital circuits, how to eliminate signal burrs is a problem that needs to be solved emphatically. In the prior art, there are the following methods for removing burrs, and they are briefly described below. [0005] 1. Eliminate glitches with redundant items. In ...

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Problems solved by technology

[0012] The defect of this method is: if the amplitude of the glitch signal exceeds the hysteresis range, the output signal of the Schmitt trigger still has glitches

[0013] In summary, in the existing deburring technology, the above-mentioned methods still have great limitations

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