Other Parts Discussed in Thread: TMS570LC4357,
Hi experts,
We are using the TMS570LC4357 in combination with the TPS65381A-Q1. We are currently searching for a way to detect that the MCU has been Reset by the TPS65381A-Q1due a transition through Reset state (e.g. cause by WD-Reset).
May understanding is that there are three ways that a register gets reset.
1. NPOR: Entering STANDBY state
2. After LBIST run while entering DIAGNOSTIC state
3. some bits aber reset by any reset
Our idea is, that the NMASK_VDD1_UV_OV bit can be used to detect, that the TPS65381A-Q1 has reset the MCU due to a transition through RESET state, excluding the transition from STANDBY.
NMASK_VDD1_UV_OV gets set by the MCU as soon as the DIAGNOSTIC state is entered and the register DEV_CFG1 is listed as Init. Source: NPOR which indicates, that this bit is only reset if the TPS65381A-Q1 transitions through STANDBY state.
(Q1) If set in DIAGNOSTIC, can the NMASK_VDD1_UV_OV in combination with the MCU be used to diagnose, if a reset of the TPS65381A-Q1 has occured (e.g. by WD-Reset)?
Thank you and best regards,
Max
