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新一代航空电子系统选用并行总线PI作为各子系统的系统级总线。本文主要讨论和分析PI总线的系统复位,系统仲裁与总线竞争、总线消息的效率及PI总线的控制机制等问题。
The new generation avionics system chooses the parallel bus PI as the system level main line of each subsystem. This article mainly discusses and analyzes the PI bus system reset, system arbitration and bus competition, bus message efficiency and PI bus control mechanism and other issues.