Hi,
From reviewing the schematic, I can see that DC_IN_MONITOR is a 1:10 divided signal of the DC input, which is supplied when the CCG8 is powered on. I also noticed that this signal is provided exclusively to the CCG8D on GPIO P1.0.
However, next to the GPIO name, there is an “SNN” label. Normally, this indicates that a signal is not used. Could you confirm if this means the signal is unused in this specific design? If it is being used, what is its intended purpose?