星载测控数传一体化平台中CAN总线接口的FPGA实现

Implementation of CAN Bus Interface in FPGA Based on TT&C Platform

测控数传一体化是一种新的测控模式,该模式采用空间数据系统咨询委员会(CCSDS)的高级在轨系统(AOS)建议,将测控与数传功能合二为一,能够有效提高卫星的有效载荷比。针对应用于测控数传一体化应答机中的CAN总线,以FPGA为主控制器,SJA1000为CAN通信控制器实现其硬件接口电路,并采用VHDL语言进行CAN总线接口模块的设计与实现,仿真与测试结果表明,在该硬件平台上CAN总线的通信速率能达到500kbps,较好地满足了系统需求。

Integration of TTC system is a new mode which adopts CCSDS Advanced Orbiting Systems,can effectively improve the utility of satellite payload.Aimed at the application of CAN bus in TTC transponder,CAN interface circuit is based on core controller FPGA and CAN controller SJAIOOO.The design and implementation of CAN bus interface module is described by using VHDL,simulation and test results show that CAN communication rate can achieve 500 Kbps,preferably meet the system requirements.