一种智能ARINC429总线接口板的硬件设计与实现

Design and Realization of a Kind of Intelligent Interface Card of ARINC 429 Bus

介绍了一种基于ISA接口的429航空总线智能接口板的硬件结构和实现方案,该接口板采用模块化设计,为以后系统的扩展和升级提供了方便。其中,CPU采用DSP作为核心处理器件,极大提高了板卡的执行速度,简化了外围电路的设计;译码、控制和中断逻辑采用复杂可编程逻辑器件CPLD实现,有效提高了板卡的集成度。实验表明,DSP+CPLD模式是一种非常灵活的设计,满足高速AR INC 429数据传输的要求,具有执行速度快、集成度高、体积小、可靠性好、易于维护和扩展等优点。

This paper introduces the structure of this card and a scheme of realization of intelligent interface card of ARINC 429 based on ISA bus.The card is designed in modules.It is convenient to update the system.In this scheme,DSP is used as the embedded CPU of this card.That improves the performing speed efficiently and simplifies the design of periphery circuit.Complex programmable logic device CPLD is used to realize the logic of coding,controlling and interruption.By this way,integration of this card is improved.The experiment about this card indicates that DSP＋CPLD mode is a very flexible design and it satisfies the requirement of the transmission of ARINC 429 data with high speed and has the virtue of high performing speed,good integration,small volume,strong reliability,easy maintenance and so on.