Hi, my name is SangRae Lee.
We have used i.mx6 Dual Lite for our products.
Now, we are testing watchdog function and are reviewing watchdog reset circuit drawing by our former engineer.
And we already asked question on watchdog reset circuit via another route but we can not get proper answer from experts except that NXP reference circuit is same with our circuit.
Below is our watchdog reset circuit.
If you can not see image file, then please refer to attached file.
What is the purpose or role of reference number C99(2.2uF) ?