I'm unclear what you're asking. I reviewed the previous posts again and I'm still unclear. It appeared to me that you wanted to know if PCB #2 was absent and you were using an external 3.3V source, if that would be OK. But in your latest post you are speaking about?LIN_REG_EN and the onboard 78M33. But "onboard 78M33" is on PCB #2, which you say you want to operate without. So I got really?confused.?
On Sat, Aug 19, 2023 at 1:40?AM Bojan Naglic <bojan.naglic@...> wrote:
OK, thank you for the answer to that. But holding both ADC lines (3V3 and 5V) at 3V3 would mean the LIN_REG_EN signal to go low I assume. So it would switch off the on-board 78M33 and thus prevent the?QMX to operate without the PCB #2 for testing.
