ITCM, DTCM, OCRAM on RT1024

[chhsu0229]

I am working the project on RT1024 and need to increase the DTCM RAM size,

Can I assign the internal SRAM as following,

(1) ITCM: 0KB, DTCM: 192KB, and OCRAM: 64KB ?

(2) ITCM: 0KB, DTCM: 0KB, and OCRAM: 256KB ?

Thanks

[Masmiseim]

Hello @chhsu0229,

The memory allocation does not necessarily have to be configured via the fuses. It can also be made via the IOMUXC_GPR_GPR17 register. It is important that this is done very early in the reset handler before any memory initialization and use takes place.

In this way you can test the different possibilities of RAM partitioning

Regards

[mjbcswitzerland]

Hi

You can set these but remember that eFUSEs can be set only once and not reset again, meaning that you will won't be able to change the default configuration back.

It may be best to chose the closely coupled RAM over OCR since they are faster. OCR is about 4x slower than the others and generally has no advantages.

Regards

Mark (uTasker project lead)

i.MX RT 1024 EVK: https://www.utasker.com/iMX/RT1024.html
i.MX RT 1024 Mux spread-sheet: https://www.utasker.com/iMX/iMXRT1024/iMX_RT_1024.xls
i.MX RT 1024 developer's doc: https://www.utasker.com/docs/iMX/i.MX_RT_1024_uTasker.pdf

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