Internal bus for aerospace electronic product

Abstract

The invention provides an internal bus for an aerospace electronic product, which is used for performing information interaction between a master module and a plurality of slave modules. Bus signals comprise a test signal, a system signal, a digital I / O (Input / Output) signal, an auxiliary functional signal, a power supply signal and a time clock synchronization signal; a bus time sequence is classified into a main module operation period using waiting and a main module operation period not using waiting; each operation period is classified into a reading time sequence and a writing time sequence. The bus provided by the invention has high universality and compatibility specific to aerospace electronic products, and contributes to improvement of module interconnection signal quality and working reliability.

Description

technical field [0001] The invention relates to the field of aerospace electronic products, and more specifically relates to an internal interconnection bus of aerospace electronic products. Background technique [0002] At present, aerospace electronic products are of various types, have a wide range of uses, and have complicated working characteristics. Different R&D factories develop different products, and the interconnection methods of the modules in the products are even more varied. In terms of physical structure alone, there are various combinations such as page type, plug-in type, stacked type, and blade type. Therefore, the signal interconnection methods between modules also have their own advantages and disadvantages. There is no interconnection bus specification that is universal and compatible with most products. . [0003] With the gradual development of aerospace science and technology and the introduction of market-oriented mechanisms in the aerospace field,...

AI Technical Summary

Problems solved by technology

However, compared with military hardened computers, aerospace electronic products have special situations such as different functional module division methods, mixed modulus and control operations, etc., it is difficult to use the above-mentioned general computer bus technology, and there is no suitable ready-made technical solution for the time being

In addition, since the control chips involved in the above-mentioned buses are mostly industrial-grade and rarely military-grade, this also greatly limits the application of these technologies in aerospace electronic products.

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