SFFS022 December 2022 TMS320F28384D , TMS320F28384D-Q1 , TMS320F28384S , TMS320F28384S-Q1 , TMS320F28386D , TMS320F28386D-Q1 , TMS320F28386S , TMS320F28386S-Q1 , TMS320F28388D , TMS320F28388S
This module includes features to support avoidance of unintentional control register programming. Implementation of multibit keys for critical control registers is one such feature (for example, EPWM_REGS.EPWMLOCK and so forth). The multibit keys are particularly effective for avoiding unintentional activation. For more details on the registers for which the diagnostic is applicable, see the device-specific technical reference manual. The operation of this safety mechanism is continuous and cannot be altered by the software. This mechanism can be tested by generating software transactions with and without correct keys and observing the updated register value.