As the wide application of ARINC429 bus on avionics equipments, slow communication speed of current boards becomes a serious problem. This paper introduced an ARINC429 communication board based on MCU control and CPLD I/O expansion. Hardware environment of this board consists of eight receive channels, four transmit channels, and both USB and RS485 interfaces. This board achieves compatibility between the plug-and-play, high-speed transmission of USB interfaces and the simplicity, universality of RS485 interfaces, making ARINC429 equipment testing faster and more convenient. This board has been used in a Hardware-in-loop testing system successfully.
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机译：随着ARINC429总线在航空电子设备中的广泛应用，当前板卡的通信速度慢成为一个严重的问题。本文介绍了一种基于MCU控制和CPLD I / O扩展的ARINC429通信板。该评估板的硬件环境包括八个接收通道，四个发送通道以及USB和RS485接口。该评估板实现了USB接口的即插即用，高速传输与RS485接口的简单性和通用性之间的兼容性，从而使ARINC429设备测试更快，更便捷。该板已成功用于硬件在环测试系统中。
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