Hi
The i.MX RT1062 has 512k FlexRAM and 512k OCRAM2. The 512k OCRAM2 is not part of the FlexRAM and its size and location are fixed.
This means that
0f000f would be referring to only FlexRAM and giving
480k DTC, 0 ITC and 480k OCR, which is not possible as there is not so much FlexRAM.
therefore the question is what you are referring to with your 512k OCR size? If it is the fixed OCRAM2 it is not in the FlexRAM and the FlexRAM setup would be 100000 16 x DTC banks (at 32k each) for a total of 512k DTC, 0 ITC and 0 OTC (with 512k fixed OCRAM2).
The header is 760 bytes in total (required padding size) and the first two bytes are 0x2f8 (760) to indicate its size (in case it were to change at some point). The size entry is therefore a part of the overall padding and so I think that the document is accurate.
Regards
Mark