Cache system and cache method of high-reliable spacecraft frame format data queue

Abstract

The invention discloses a cache system and a cache method of a high-reliable spacecraft frame format data queue. In the system, a second-level address management mechanism is designed on the basis of a dual port memory; the second-level address management mechanism is divided into frame grade address management and data grade address management; the second-level address management mechanism is mapped to a physical address of the dual port memory through a second-level scaling circuit; and a frame write-in address scaling unit, a frame read-out address scaling unit, a frame address management unit, a writing frame detection unit, a reading frame detection unit and the like are designed. A spacecraft frame format data queue memory which is complete in function and has queue storage and reading operation in a mode that a data frame structure is used as the unit is realized. The cache system is simple in principle, strong in function, small in resource expense, high in robustness and strong in application; and a diversity of hidden fault dangers which influence the data frame format displacement and breakage expansion caused by abnormal data of an on-track satellite are eliminated.

Description

technical field [0001] The invention belongs to the technical field of aerospace electronics, and relates to a highly reliable spacecraft frame format data queue buffering system and a buffering method. Background technique [0002] Spacecraft remote control and telemetry data frames have a specific protocol and corresponding data format requirements. When the frame format is disrupted or destroyed, it will cause errors in the interpretation of data by the software / hardware designed according to the protocol, resulting in serious failures. A wide variety of data communications are required between subsystems, equipment, and chips inside the spacecraft, and all of them are transmitted in the form of data format frames specified in the interface protocol. At present, traditional spacecraft remote control and telemetry data frame buffers usually use FIFO or ping-pong buffering methods. First of all, the method of using FIFO for caching has a large hidden danger of data frame s...

AI Technical Summary

Problems solved by technology

[0009] The technical solution problem of the present invention is: overcome the deficiencies in the prior art, provide a kind of highly reliable spacecraft frame format data queue caching system and caching method, utilize the idea of ​​secondary address mapping and frame structure queue to design the frame structure queue memory , to solve the problem of high complexity and low reliability in spacecraft frame structure data cache control

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