[quote user="Biser Gatchev-XID"]
You can't be sure of anything before you fix the SYSBOOT pins. Another thing to check: if you have other power supplies for peripherals you have to make sure they don't ramp-up before the corresponding AM335X VDDSHVx supplies. As a general rule the AM335X I/O pins are not fail-safe (except USB_VBUS pins) and no voltage should be applied to them before the processor is powered up.
[/quote]
Hi Biser,
Thanks again for your help... this insight got us looking in the right direction. Our power supply filtering was preventing the PMIC from coming up cleanly.
For information, I was able to connect an XDS100v2 emulator to the processor without the SYSBOOT pins being configured correctly. Hopefully we can now prove the rest of the design before fixing this in the next iteration.
Thanks again,
Paul.
