SPRUIZ1B July 2023 – August 2024 TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1
Each CPU has a watchdog timer that can optionally trigger a reset that lasts for 512 INTOSC1 cycles. CPU1 watchdog reset (CPU1.WDRS) produces an XRS. CPU2 watchdog reset (CPU2.WDRS) produces a CPU2.SYSRS and triggers an NMI on CPU1.
After a watchdog reset, the WDRSn bit in the RESC register is set. Software can read this bit to know the cause of reset and clear the status by writing a 1 into the corresponding bit in the RESCCLR register.