Dear NXP Support Team,
I am developing a system using the SJA1124EVB together with an ESP32-S3 microcontroller.
Communication with the SJA1124 over SPI works correctly and I am able to write to its registers.
As a test, I wrote the value 0x06 to the PLLCFG register because I am using an external clock frequency of 3 MHz. When I read the register back, I correctly get 0x06. However, after approximately 3 seconds the SJA1124 resets itself and the value read from PLLCFG reverts to 0x0A. (I am reading the PLLCFG register every 100 ms.)
I have checked the power supply and it is sufficient for the system. I have also attached the test results for your reference.
Could you please advise me on how to resolve this issue?
Thank you very much for your support.


