i.MX 8M Plus FlexCAN running while CPU cores suspended

[matbus]

On i.MX 8M Plus, can the FlexCAN be alive while the CPU cores are suspended? With
hardware filters we can then have the FlexCAN interrupt the CPU on
specific frames and deliver them. I mean have the CAN controller and CAN
tranceiver fully running at some power consumption cost?

[igorpadykov]

Hi Mattias

for such case one can look at sect.11.8.2.1.1.4 Stop mode 

i.MX 8M Plus Applications Processor Reference Manual

Best regards
igor

[matbus]

Hi Igor,

Thanks for the reply. However, the FlexCAN cannot wake up on a specific frame here as I understand or am I wrong? We need to wake up on a normal CAN frame.

[igorpadykov]

one can try to leave FlexCAN running in low power mode configuring its CCM_CCGR53,54 registers,

clock gate control is described in sect. 5.1.7.6 CCM Clock Gating Register (CCM_CCGRn)  i.MX 8M Plus Applications Processor Reference Manual

Best regards
igor