Detection method and device for stable plug-in state of plug-in card, and equipment

Abstract

The invention provides a detection method and device for the stable plug-in state of a plug-in card, and equipment. The method comprises the following steps that: a single board receives a differential signal from the plug-in card through a differential pair pin between the plug-in card and the single board; the single board determines whether the plug-in card which is plugged into the single board at present is under the stable plug-in state or not according to a judgment result which shows whether the quality of the differential signal meets a preset plug-in state or not, wherein the plug-instate condition is that alternating current impedance and direct current impedance between the single board and the plug-in card meet signal transmission impedance requirements. By use of the methodprovided by the invention, the accuracy of the stable plug-in detection of the stable plug-in card is greatly improved, in addition, when a serdes signal is transmitted between the single board and the stable plug-in card, serdes signal transmission quality can be guaranteed, serdes signal transmission attenuation is lowered, and meanwhile, the transmission quality of a direct current signal whendirect current transmission is carried out between boards can be guaranteed.

Description

technical field [0001] The present application relates to circuit technology, and in particular to a method, device and equipment for detecting a stable insertion state of an insertion card. Background technique [0002] For devices that support flexible plug-in cards, there may be virtual plug-ins when manually plug-in cards. If the board with the plug-in card is started at this time, service exceptions may occur due to unreliable inter-board channel connections. Therefore, at present, a secure signal is defined on the connector of the card or the single board to determine whether the card is inserted securely. [0003] In the prior art, a single connector or a row of connectors is generally selected, see figure 1 The schematic diagram of the connection between the main control board and the plug-in card is shown. First, select two pairs of pins on the plug-in card and the main control board, namely A1 and A2, B1 and B2, where the pair of PINs A1 and A2 is connected to th...

AI Technical Summary

Problems solved by technology

[0005] The present application provides a method, device and equipment for detecting the stable state of a plug-in card, which are used to solve the inaccurate judgment of the stable state of the plug-in card in the prior art, resulting in poor signal of the serdes link, which cannot meet the requirements of the main control board or plug-in. Technical Issues Requiring Card Reception

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