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

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

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matbus
Contributor II

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?

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3 Replies

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igorpadykov
NXP TechSupport
NXP TechSupport

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

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matbus
Contributor II

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.

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igorpadykov
NXP TechSupport
NXP TechSupport

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

 

 

 

 

 

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