IMX8MM-EVK power supply of ARM cortex M4

[ajita02]

Hi all,

I want to know what supply ARM cortex-M4 uses on IMX8MM-EVK. I know that ARM A-53 uses VDD_ARM. Please provide me a lead.

Thanks & Regards,
Ajita

iMX8MMINI #ARM-CM4

[Chavira]

Hi @ajita02!
Thank you for contacting NXP Support!

VDD_ARM and VDD_SOC are the core supplies, if you want to use only the M4 core you have to use at least U-boot to load the binary to the M4.

Please check our getting started guide on how to run programs on M4 core on your board

https://www.nxp.com/document/guide/getting-started-with-the-i-mx-8m-mini-evkb:GS-iMX-8M-Mini-EVK?sec...

Best Regards!
Chavira

[ajita02]

There are 3 states in PMIC suspend, Idle and run in which VDD_SOC is on. VDD_ARM is On in Idle and run states. I want to know that can we operate M4 in PMIC suspend state? I want to detect USB detection interrupt in PMIC suspend state. I want maximum power saving so A53 can be in off state.

[Chavira]

Hi @ajita02!

According to our application notes the A-Core cannot be turned off.

Please check the "AN12410" and the use cases.

https://www.nxp.com/docs/en/application-note/AN12410.pdf

For your purpose I recommend the iMX8ULP, check the "AN13914" and the use cases.

https://www.nxp.com/docs/en/application-note/AN13914.pdf

Best Regards!

Chavira

[ajita02]

Can you tell me what supply M4 core uses? does both supplies VDD_SOC and VDD_ARM are needed to operate M4? what are the things depends on VDD_SOC?

[ajita02]

Also what are the components uses VDD_SOC power supply?