TMS320F2812与ARINC429数据总线之间的通信设计

Design of communication between TMS320F2812 and ARINC429 data bus

ARINC429总线是一种应用广泛的航空数据总线,主要用于航空电子设备和系统之间的通信。在描述AR-INC429总线和HS-3282的基础上,提出了TMS320F2812 DSP与ARINC429数据总线通信的设计方法。该系统主要由429数据收发模块和CPLD逻辑控制模块组成。429数据收发模块采用429专用协议收发芯片HS-3282完成429总线数据的格式转换和协议处理,CPLD逻辑控制模块使用CPLD地址译码产生HS-3282所需要的初始化、接收使能、发送使能信号,TMS320F2812通过CPLD逻辑控制对HS-3282进行时序控制来完成TMS320F2812与429总线的通信。结果表明,该系统能实现TMS320F2812与ARINC429数据的100 kb速率的通信,并完成总线数据格式转换。

ARINC429 bus is a widely used avionics data bus. It is mainly used in communication between avionics and systems. On the basis of introducing ARINC429 bus and HS-3282, this paper gave the designing scheme of communication between TMS320F2812 and ARINC429 bus. The system consisted of 429 data transceiver module and the CPLD logic control module. 429 special protocol transceiver chip HS-3282 was used in 429 data transceiver module to implement 429 bus data format conversion and protocol processing. The CPLD address decoder generated initialization, receiving and sending enable signals which were needed by HS-3282 in CPLD logic control module. TMS320F2812 provided timing control by CPLD logic control for the HS-3282 to implement the 429 data transceiver. The results show that the system can implement 100kb rates communication between TMS320F2812 and ARINC429, and the bus data conversion of format.