What happens when the EN pin of TJA1043 is suspended?

[jingfang]

What happens when the EN pin of TJA1043 is suspended?

The design is as follows:

TJA1043 EN ->MCU Output

We found that the TJA1043 EN could not communicate if the pin was pry open.

I checked the spec. EN high should be in listening - only mode.

So pin was pry open,does it work properly?

[TomasVaverka · Accepted solution]

Hi Jingfang,

Both EN and STB_N pins are used to select operating mode of the transceiver. They have an internal pull-down, so the Standby mode is entered if these control pins are not driven upon "power on".

I hope it answers your question.

Best regards,

Tomas

[jingfang]

Hello~ The customer wants to know,under what circumstances will the EN pin work abnormally?Virtual welding is one of tem. What else?