SPRUIN7C March 2020 – March 2024 TMS320F280021 , TMS320F280021-Q1 , TMS320F280023 , TMS320F280023-Q1 , TMS320F280023C , TMS320F280025 , TMS320F280025-Q1 , TMS320F280025C , TMS320F280025C-Q1
The Hardware Built-In Self-Test (HWBIST) module tests the functionality of the CPU. At the end of the test, the module resets the CPU to return the CPU to a working state. This reset (HWBISTRS) only affects the CPU. The peripherals and system control remain as previously configured. The CPU state is restored in software as part of a special boot ROM flow. For more information on the HWBIST flow, contact your local TI representative.
After a HWBIST reset, the HWBISTn bit in RESC is set. Software can read this bit to know the cause of reset and clear the status by writing 1 into corresponding bit in RESCCLR register.