! We hit a snag on the VCCIO_EN signal but I think we have it all sorted out but wanted to run it by you guys.
VCCIO_EN doesn't provide a 1.8V signal, it's more like 1.4V. This was surprising to us as the HW user guide implies a 1.8V signal (although is not explicit). See below excerpt..
The 1.4V wasn't sufficient to turn on the fan2558s10x regulator we selected and so our power rails were not able to turn on.
I reviewed the 7015 SOM Rev E schematic and found that there is a resistive divider on VCCIO_EN. Can you explain why this resistive divider is present? We had to remove R69 from the SOM to get a desired 1.8V logic level. Do you think this is appropriate for our application, or are we missing anything?
I suspect there was some reason for this voltage divider on VCCIO_EN but I can't find any documentation on it. Please advise.