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TJA1043 receive interrupt delayed after wakeup in RH850

Question asked by Haridas Sagar on Oct 17, 2018

Hi ,


I see delay of 250-500ms from the wakeup to CAN receive FIFO interrupt generation(INTRCANGRECC),


I measure this timestamp in my interrupt handler and i have attached my hardware CAN controller schematic here for reference.


Could you please help me understand what can cause this delay?