SPRUJ28E November 2021 – September 2024 AM68 , AM68A , TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1
There are four PSC controls for the FSS: the FSS itself, OSPI0, HyperBus interface, and OSPI1. The CPU enables the appropriate interfaces before using FSS0 or FSS1 of the FSS.
The FSS0 can be used for HyperBus interface or OSPI0 and only the interface in use has to be enabled. Software should ensure the selected interface is enabled prior to FSS0 transactions.
The FSS1 can only be used to access OSPI1. The FSS1 transaction may be blocked depending on the power state of the OSPI1.
Normal Power Down Sequence: