Ahmed Soubky

MPC5744 & MC33907 Wakeup by CAN

Discussion created by Ahmed Soubky on Oct 25, 2016
Latest reply on Nov 7, 2016 by Jose Alberto Reyes Morales

Hello Everybody, 


We have a question to you regarding the CAN wakeup by the MC33907 system basis chip. 


The configuration we have is the SBC provides the power to MPC5744 microcontroller and due to CAN activity the SBC wakes up and powers up the microcontroller and starts up the system accordingly. 


During the shutdown sequence, which can take up to 2 seconds, the CAN controller is stopped and we can't receive CAN frames in the microcontroller any more. And in case CAN wakeup event is detected by SBC, we need a notification from the SBC to the microcontroller that CAN frames are were received in order to cancel the shutdown sequence and startup the system again. 

Can you please help us regarding this issue ? 


Thanks in advance,