Sleep exit is controlled by SLEEP going high or by FORCE_ACT being set to 1 by an RTC alarm. This triggers the ENx pins to assert as per the configuration in SLP_ENx registers, consult Table 8-33 for more information on SLP_ENx registers.

In case of RTC alarm wake, the host will see the interrupt and it will assert SLEEP and clear FORCE_ACT. See Figure 8-9, Figure 8-10, and Figure 8-11 for signal details.