基于CPLD的ARINC429总线接口系统设计

文章首先简单介绍了ARINC429航空总线的应用背景和总线传输协议的基本内容。然后根据ARINC429航空总线标准的要求,提出一种基于ACTEL公司CPLD的透明数据传输系统方案。在QUARTUSⅡ和MODELSIM的设计平台上,该系统成功实现12路ARINC429信号接收和4路ARINC429信号发送的功能,每个通道都包括32×8的数据FIFO,ARINC429字长为32位,主机接口采用16位,429数据速率支持12.5kbps与100kbps,数据传输实时可靠,能较好地满足ARINC429通信系统的要求。该电路系统采用正向设计,VerilogHDL硬件语言描述,ACTEL公司A3P250VQG100I实现,规模十四万门左右,采用VQFP100封装,双电源设计,功耗低至0.4W,能较好地满足工业级电路系统低功耗的设计要求。

The Design of ARINC429 Bus-interface System Based on CPLD

The paper introduces the application background of ARINC429 bus and the base content of the protocol. Then a scheme of a transparent data transmission system in accordance with AR1NC429 bus standard is proposed based on CPLD, in which twelve input-channels and four output-channels of ARINC429 have been realized by the EAD platform of quartus and modelsim. Each channel includes 32 ~ 8 bits FIFO and sustains 12.5kbps and 100kbps data rate. This system still holds a 16-bit-host-interface and ARINC429 word is 32 bits. The data can be transmitted reliably in real-time,and it has been demonstrated that the scheme has fulfilled requirements of ARINC429 communication system quite well. The system is realized by Verilog HDL in the device A3P250VQG 100I of ACTEL,which includes 400 thousand gates and is packeged by VQG 100.The industrial system uses double powers in accordance with low-power-design, therefore its power-consume is only 0.4W.