imxrt 1024 low speed run mode

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imxrt 1024 low speed run mode

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po-pony
Contributor II

Hello,

I am working on i.MX RT1024 low speed run mode.  There is the following code in the SDK demo "power_mode_switch_rtos":

QQ截图20210702135736.png

In this demo, sys pfd0, pfd1, usb1 pll, usb1 pfd0 ~ pfd3, audio pll and enet pll are disabled. 

I found that if I did not disable the ENET PLL, ENET can work normally.However is this be allowed in low-speed run mode? If I enable ENET PLL, is this still in low-speed run mode?

Looking forward to your reply, thank you!

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Alexis_A
NXP TechSupport
NXP TechSupport

Hello @po-pony,

In the following application mention the features of the different power modes, this mode is not restrictive and each PLL could be enabled depending of the needs, you only need to take in count the current consumption would be higher depending on the modules enabled.

Alexis_A_0-1625525180462.png

Best Regards,

Alexis Andalon

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po-pony
Contributor II

Hello ,Alexis Andalon

Thanks  for your reply. I also noticed what you described in "AN12085 - How to use i.MX RT Low Power Feature". But what is written in the application notes AN12094 and AN12204 is to power down ENET_PLL, this confuses me.

popony_3-1625647698035.png

 

popony_2-1625647669715.png

Best Regards,

po-pony

 

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