The following set of steps shall occur on the
EVM and AM263x to boot the device from power-on
reset.
- PORz is held low by the
external power supply monitor
- VDD core digital 1.2V and VDDS3V3/VDDA3V3 3.3V
supplies ramp to their nominal voltages
- This requires a logical AND be applied to the
power good signal generated from each supply
- SOP[3:0] pins held in their boot latch
state
- After PCB supplied power nets are stable, the
external supply monitor will de-assert PORz
- Device will startup 1.8V on-die LDO
- After internal supply monitors show externally
and internally generated supplies are stable, the
SOP[3:0] pin states are latched
- R5F cores are unhalted and SOP selected boot
ROM execution begins