TDA4VM: TDA4VM Restart at a fixed interval

Hi Davied,

Are you running Linux or RTOS? What OS is running?

- Keerthy

Hi，Keerthy

      Thanks for you support. We tested only running the MCU domain, and it restart as before. We have not modified firmware of MCU domain. The reset pin of mcu domain and the reset pin of main domain was measured during our testing, and the restart pin did not detect a level change.  We also measured the power supply of mcu domain and main domain, it is OK.So we think hardware watchdog or PMIC malfunction, Is there any way to locate the cause of restart？

Regards
Zhang

Hello Zhang,

Which PMIC are you using? Is the PMIC watchdog enabled by default?

Regards,

Keerthy 

Hi，Keerthy 

     The PMIC is TPS6594-1213 and TPS6594-1111. We disabled the  PMIC watchdog, and  test again. It restart as before, The reset PIN of the MCU is detected from high to low.

Regards,

Zhang

Hi，Keerthy

     Thanks for yor support. We found that disablse  watchdog  did not take effect, and w change to the pull-up mode worked.

Regards,

Zhang