Refer to the PDF data sheet for device specific package drawings
The Error Signaling Module (ESM) aggregates safety-related events and/or errors from throughout the device into one location. It can signal both low and high priority interrupts to a processor to deal with a safety event and/or manipulate an I/O error pin to signal an external hardware that an error has occurred. Therefore an external controller is able to reset the device or keep the system in safe, known state.
For more information, see Error Signaling Module (ESM) section in Peripherals chapter in the device TRM.