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AM4372: Power supply question

Part Number: AM4372
Other Parts Discussed in Thread: TPS65218

Dear all.

Our customer has a question about the power supply selection in the AM437x Schematic Checklist.

"Simplified Power Sequencing utilizing only 3.3V IO for all VDDSHVx domains" is written as "Not supported" in an item of PIMIC in the list. How is this a meaning to say? A datasheet of TPS65218 does not seem to have the limit, is the limit written?

When we want to set VDDSHV1-11 3.3V, should I compose power of a discrete?

Regards,
PAN-M