topic Re: i.MXRT1170 M4 Core Off function in i.MX RT Crossover MCUs

i.MXRT1170 M4 Core Off function

user_Egertons — Mon, 10 Feb 2025 08:20:42 GMT

How can the M4 core in the i.MX RT1170 MCU be disabled?

Could you please provide specific feasible methods?

Or is it possible to reduce the core's operating clock frequency to 0?

Re: i.MXRT1170 M4 Core Off function

RanChen — Wed, 12 Feb 2025 06:11:40 GMT

In RT1170, the CM7 is the primary core and the CM4 is slave core. You need use CM7 to kick-off CM4. Therefore, CM4 is already disabled by default.

Besides, if you are concerned about the power consumption issues related to CM4, you can switch the power mode of CM4 by CM7. You can refer to the DEMO in the SDK first.

The path to demo is: SDK_2_16_000_MIMXRT1170-EVKB\boards\evkbmimxrt1170\demo_apps\power_mode_switch

Best regards

Ran Chen

Re: i.MXRT1170 M4 Core Off function

mayliu1 — Thu, 13 Feb 2025 07:56:57 GMT

Thanks Ran's reply.

Re: i.MXRT1170 M4 Core Off function

user_Egertons — Mon, 17 Feb 2025 01:06:16 GMT

Thank you very much for your reply.

I will proceed with the above approach.