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ADM3054 CANH&CANL problem

Category: Hardware
Product Number: ADM3054

Translation: 

During the communication process, the CANH & CANL pins output high level. After the dominant state remains for 6us, 
an abnormal pull-down will occur. The input signal source is the signal generator.
There is no abnormality after monitoring. What may be the cause of this?
  • 在通信过程中,CANH&CANL引脚输出高电平是,显性状态保持6us以后,会出现一个异常的下拉,输入信号源为信号发生器,经监测没有异常,这可能是什么原因导致的?


fixed content to fit correctly on line
[edited by: GenevaCooper at 2:00 PM (GMT -5) on 17 Nov 2023]
  • It would be helpful to have some more information so that I can understand what is happening here. 

    Can you share a waveform with the differential CANH - CANL?  Also, can you describe what your set up is?  What is connected to the CAN bus, are you using an eval board, etc. ?

    Eric

  • Hi,Eric

    这是CAN总线差分信号,第二张照片中的低电平脉冲是异常现象,测试电路是我自己参考ADM3054数据手册搭建的,与eval board几乎一样。我想知道有什么原因可能导致CAN总线输出的信号上出现这种异常的低电平脉冲。