针对传统ARINC429总线电路设计中采用的协议芯片的方式有扩展性差,占面积大的问题,提出一种基于FP-GA的ARINC429协议电路设计.协议电路的设计分为接收电路设计和发送电路设计两部分,并且对电路进行了仿真和验证.协议电路可以通过配置模块的I/O口,方便地对ARINC429总线通信的波特率、奇偶校验等参数进行设置.该协议采用的独立的收/发电路设计可以很方便地进行ARINC429总线通道的扩展.除FPGA外,电路外围只需要使用总线驱动电路,从而大大地减少了电路面积.该协议电路设计通过严格的测试,已经应用在实际的产品中.%For the design way based on ARINC429 protocol chip has poor expansibility and big occupied area in the tradi-tional circuit design of ARINC429 bus,a ARINC429 protocol circuit design base on FPGA is proposed. The design of protocol circuit is divided into two parts(receiving circuit design and transmitting circuit design). The circuit was simulated and verified. Baud rate,parity check parameter and other parameters of the ARINC429 bus communication can be set easily by configuring the I/O interfaces of modules. The extension of ARINC429 bus channel can be realized conveniently by the independent transmit-ting circuit design and receiving circuit design adopted by this protocol. In addition to FPGA,the peripheral circuit only need to use the bus driver circuit,by which the circuit area is greatly reduced. The circuit design of this protocol has passed the strict test and was used in the products.
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