AM2432: operate/RUN without external flash memory

Hello Vaibahv,

The AM243x does not have any internal flash memories to store the app images.

So, we need the external memories to keep the app images.

When we do POR/WarmReset, the Boot starts from RBL(ROM bootloader) → SBL(Secondary Bootloader) → Application (DDR/MSRAM).

Here, the SBL will take the app images from the external memories and put them into the DDR /MSRAM memory.

And, now the Application runs from DDR/MSRAM memory.

Regards,

Anil.

Hello Vaibhav,

The AM243X has internal memory of up to 2MB and in which some memory is used for DM (Device Management ) operations .

So, if your application is less than 2MB, then go ahead and use the AM243X device without DDR.

einfochips an Arrow Company said:

In the case where the AM243x device does not have external memories, is it possible to boot the device from USB and run the application on AM243x?

This is not possible. We need to keep the app images in external memory. Otherwise, even if we write app images on the MSRAM/DDR memory, after the reset the DDR/MSRAM content will be lost. Then again, the R5F core runs from which location ?

So, we have to keep app images in external memory. Please read the chapter below to understand better SBL and memory layout.

https://software-dl.ti.com/mcu-plus-sdk/esd/AM243X/11_00_00_15/exports/docs/api_guide_am243x/MEMORY_MAP.html

https://software-dl.ti.com/mcu-plus-sdk/esd/AM243X/11_00_00_15/exports/docs/api_guide_am243x/BOOTFLOW_GUIDE.html

Regards,

Anil.