2030672_en-US

[#1]

i.MX RT1176 OCRAM performance questions

Hi,

I have some questions regarding i.MX RT1176 OCRAM performance:

1. Is the OCRAM allocated from FlexRAM faster than OCRAM1 and OCRAM2?
2. Is there a performance penalty if the M7 core accesses OCRAM1, and M4 accesses OCRAM2 simultaneously?
3. Is there a performance penalty if both the M7 and M4 cores access OCRAM1 (or OCRAM2) simultaneously?
4. Is there a difference in performance if the M4 accesses OCRAM allocated from FlexRAM rather than OCRAM1 or OCRAM2?

Best,
Kim

Re: i.MX RT1176 OCRAM performance questions

Thanks Omar, you confirmed my expectation.

Best,
Kim

Re: i.MX RT1176 OCRAM performance questions

1. No.
2. Yes, both ocram access the same AXI bus so wait cycles are expected when accessed by multiple sources.
3. Yes, as they are accessed with the same AXI bus.
4. No

To minimize the penalty it is suggested to cache the OCRAM to achieve better performance.

Best regards,
Omar