If I set OTWE=0, the transition (NORMAL to OVERTEMP) never occured ?

[sosawada]

I don't understand how to use OTW, OTWE, OTWS.

IC is high temp -> OTWS=1 -> If OTWE=1 then OTW=1 and state transition NORMAL to OVERTEMP.

IC is high temp -> OTWS=1 -> If OTWE=0 then OTW=0 and no state transition.

Is it correct ?

[TomasVaverka]

Hi So,

Could you please specify which device you are referring to?

Best regards,

Tomas

[sosawada]

Hello Tomas-san,

I'm sorry that I didn't mention my device.

I'm using TJA1145.

Best regards

So

[TomasVaverka]

Hi So,

Your understanding is correct. The TJA1145 issues a warning when the IC temperature rises above the overtemperature warning threshold (Tth(warn)otp). When this happens, status bit OTWS is set and an overtemperature interrupt is generated (OTW = 1), if enabled (OTWE = 1). 

Best regards,

Tomas

[sosawada]

Hello Tomas-san,

Thank you very much for your quick response.

Best regards

So.Sawada