Reset

The requirement for the BR_XETK-S3.0 reset mechanism is to ensure that powerup and power-down behavior of ECU is clean and smooth. The BR_XETK-S3.0 normally drives /PORST low during XETK power up or upon INCA request.

The signals /PORST and /ESR0 of the microcontroller are used by the BR_XETK-S3.0 to detect when the ECU is in reset.

Note
The reset signal /PORST can be hold or pulled low while the BR_XETK-S3.0 is booting depending on the use the adapter ETAM8A or the adapter ETAM8B. The BR_XETK-S3.0 has to be configured in the XCT tool according to the needed reset signal characteristic during BR_XETK-S3.0 standby.

The BR_XETK-S3.0 senses the switched ECU power supply. This allows it to detect when the ECU is off and forward this information to INCA. In addition, it allows the XETK to enter the power save mode with the calibration system unplugged.