基于FPGA的车电总线接口技术研究

为提高集成架构中车电总线通信速率,结合综合化处理系统项目要求,采用双总线结合的方式,利用CAN总线和FlexRay总线实现功能及搭配上的互补,提出一种基于现场可编程门阵列(FPGA)的总线接口单元设计方案。通过FPGA完成CAN总线控制器、FlexRay总线控制器、RapidIO总线接口等模块功能,实现高速接口的控制和扩展,并使模块接口具备可配置能力。测试结果表明,CAN接口及FlexRay接口在指定的波特率下均工作正常,满足项目要求的各项性能指标。

Research on Car Electric Bus Interface Technology Based on FPGA

In order to accelerate the car electric bus communication rate in the integrated architecture, combined with the requirements of processor project on integration-platform, with the combination of dual bus and complementary on the function and collocation of CAN and FlexRay, a Field Programmable Gate Array（FPGA）-based bus interface unit is designed. The module function of the internal CAN bus controller, FlexRay bus controller, RapidIO bus interface and Ethernet through FPGA is completed. The control and extension of high speed interface is realized, and the module interface configurable is made. Test proves that the CAN interface and FlexRay interface work properly under the specified baud rate, and each performance index meets the project requirement.