ZHCSEF7G December 2014 – February 2019 TPS659037
PRODUCTION DATA.
A power sequence is an automatic pre-programmed sequence handled by the TPS659037 device to configure the device resources: SMPSs, LDOs, 32-kHz clock, part of GPIOs, , REGEN signals) into on, off, or sleep modes. See Section 5.3.6 for GPIO details.
Figure 5-19 shows an example of an OFF2ACT transition followed by an ACT2OFF transition. The sequence is triggered through PWRON pin and the resources controlled (for this example) are: SMPS8, LDO1, SMPS12, SMPS45, REGEN1, LDOLN, LDOUSB, and LDO2. The time between each resource enable and disable (t(instX)) is also part of the preprogrammed sequence definition.
When a resource is not assigned to any power sequence, it remains in off mode. The user (through software) can enable and configure this resource independently after the power sequence completes.
Figure 5-19 Power Sequence Example The power sequence of the TPS659037 device is defined according to the processor requirements. For more information, refer to TPS659037 User's Guide to Power AM572x and AM571x.