Other Parts Discussed in Thread: LM10011, TPS56121
I'm looking at the power up sequence for the 66AK2L (although, I suspect this question can apply to any Keystone device). According to documentation, CVDD needs to start first and stabilize. I am using the LM10011/TPS56121 combination. However, the LM10011 VID/VCNTL bits are pulled up to VCC1.8. But.. VCC1.8 has not been enabled yet. Therefore, how can CVDD become stable and under control via the VCNTL bits when VCC1.8 is not yet present?