TJA1043 Communication Abnormal

caesar_song — Wed, 19 Feb 2025 05:52:49 GMT

Hi Guys

Regarding the transceiver of TJA1043, will it enter an abnormal state if there is an exception on the CAN bus? How does it behave once it's in an abnormal state? For example, can packets be sent but cannot be received，thanks

Re: TJA1043 Communication Abnormal

JozefKozon — Wed, 19 Feb 2025 06:47:01 GMT

Hi Caesar,

could you please elaborate what you mean by the abnormal state? There is five modes/states in the TJA1043, which are controlled by STB_N, EN pins and be the wake-up event.

JozefKozon_0-1739947446824.pngJozefKozon_1-1739947464044.png

Please elaborate on what you mean an exception on the CAN bus. Do you mean the CANH or CANL, or both are short circuited to VBAT, VCC or GND? If yes, there is a description of this fail in the section 7.3.3 in the TJA1043 datasheet.

JozefKozon_2-1739947597230.png

With Best Regards,

Jozef

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