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TCAN4550: 500K仲裁,4M数据传输,采样率在72%,接受数据的时候 PSR 寄存器 RFDF,RBRS位有时候都是0

Part Number: TCAN4550
Other Parts Discussed in Thread: AM4379

我们板子采用 主控AM4379,canfd 通信采用TCAN4550,TDC 使能,TDCV = 12,我们在500K仲裁,4M数据传输,采样率在72%,接受数据的时候 PSR 寄存器 RFDF,RBRS位有时候都是0,通信一段时间后就无法接收到正确的数据了,请问这可能是什么问题?