SPRUII0F May 2019 – June 2024 TMS320F28384D , TMS320F28384D-Q1 , TMS320F28384S , TMS320F28384S-Q1 , TMS320F28386D , TMS320F28386D-Q1 , TMS320F28386S , TMS320F28386S-Q1 , TMS320F28388D , TMS320F28388S
The external reset (XRS) is the main chip-level reset for the device. XRS resets both C28x CPUs , the CM subsystem, all peripherals and I/O pin configurations, and most of the system control registers. XRS also holds CPU2 and the CM subsystem in reset. There is a dedicated open-drain pin for XRSn. This pin can be used to drive reset pins for other ICs in the application, and can be driven by an external source. The XRSn is driven internally during watchdog, NMI, and power-on resets.
The XRSn bit in the RESC register is set whenever XRS is driven low for any reason. This bit is then cleared by the boot ROM.