ZHCSG94L August 2013 – February 2019 TPS659038-Q1 , TPS659039-Q1
PRODUCTION DATA.
A power sequence is an automatic pre-programmed sequence handled by the TPS65903x-Q1 device series to configure the device resources: SMPSs, LDOs, 32-kHz clock, part of GPIOs, , REGEN signals) into on, off, or sleep modes. See Section 6.3.6 for GPIO details.
Figure 6-19 shows an example of an OFF2ACT transition followed by an ACT2OFF transition. The sequence is triggered through PWRON terminal and the resources controlled (for this example) are: VIO, LDO1, SMPS2, LDO6, REGEN1, LDOLN, LDOUSB, and CLK32KOUT. The time between each resource enable and disable (TinstX) 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.
The power sequences of the TPS65903x-Q1 device series are defined according to the processor requirements, see the relevant Application Note for more information.