Hi TI
I use DCC feature and compare external oscillator (19.2M) and internal oscillator(32K). I use MCU_DCC0 channel, register value as below:
1）DCC_VALIDSEED0.VALIDSEED0 = 2406
2）DCC_CNTSEED0.COUNTSEED0 = 22857
3）DCC_CNTSEED1.COUNTSEED1 = 40
I enable single shot mode every 50ms. I find that after start up, DCC is OK until about 200 seconds later, it will report DCC error, and then it will recovery. It will report error again by every low chance. The rest time, it is OK.
I don't have any idea about it, do you have some suggestion? I find in the user manual that CLK_32 may be vary according to PVT, what's PVT? Do you think it maybe the root cause?
How can I deal with this problem?
Thank you!
Zhihua
