JAJSJA4L June 2011 – February 2021 F28M35E20B , F28M35H22C , F28M35H52C , F28M35H52C-Q1 , F28M35M22C , F28M35M52C
PRODUCTION DATA
The Concerto MCU has two external reset pins: XRS for the Master and Control Subsystems and ARS for the Analog Subsystem. TI recommends that these two pins be externally tied together with a board signal trace.
The XRS pin can receive an external reset signal from outside into the chip, and the pin can drive a reset signal out from inside of the chip. A reset pulse driven into the XRS pin resets the Master and Control Subsystems. A reset pulse can also be driven out of the XRS pin by the Power-On Reset (POR) block of the Master and Control Subsystems (see Section 8.9). A reset pulse can be driven out of the XRS pin when the two Cortex-M3 Watchdogs or the Cortex-M3 NMI Watchdog time-out.
There are some requirements on the XRS pin:
The ARS pin can receive an external reset signal from outside into the chip, and the pin can drive a reset signal out from inside of the chip. A reset pulse driven into the ARS pin resets the Analog Subsystem. A reset pulse can be driven out of the ARS pin by the POR block of the Analog Subsystem.
Figure 8-5 shows the resets.