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(8)
Trigger IDs 21 and 22 are not available until the NSLEEP bits are masked: NSLEEP2_MASK=NSLEEP1_MASK=1.
(9)
Trigger IDs 3, 25, and 26 are enabled and activated by the power sequences. These triggers are used to manage the transition
between the PFSM and the FSM.
6.3 Power Sequences
6.3.1 TO_SAFE_SEVERE
The TO_SAFE_SEVERE sequence will shut down all rails without. The sequence immediately ceaseses BUCK
switching and enables the pulldown resistors of the BUCKs and LDOs. This is to prevent any damage of the
PMICs in case of over voltage on VCCA or thermal shutdown. The timing is illustrated in
SLVUBY7A – OCTOBER 2020 – REVISED OCTOBER 2022
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Pre-Configurable Finite State Machine (PFSM) Settings
Figure
Powering DRA821 with TPS6594-Q1 and LP8764-Q1
6-2.
29
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