Micron 4 bit on-die ECC (die shrink)

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SandrineHL
Posts: 3
Joined: Thu Jan 26, 2012 10:05 am

Micron 4 bit on-die ECC (die shrink)

Thu Jan 26, 2012 10:32 am

Hello all,

My paltform is based on the AT91SAM9G45 and I use the Windows CE 6.0 BSP developped by Adeneo.
Due to EOL of my nand flash, I need to use a new flash component from Micron and I would like to use the 4bit on-die ECC of the new NAND component (x8).
I enabled it correctly thanks to the command "SetFeatures".
Now, my problem is that the spare area mapping (16 bytes) for one sector is set as below:

bytes 0 and 1 : reserved
bytes 2 and 3: user metadata 2
bytes 4 to 7: user metatdata 1
bytes 8 to F : ECC/parity

So I have only 6 bytes in user area to store information. And I need to store the SectorInfo whom size is 8 bytes...

Does anyone have an idea on how I can do using the existing FAL ?

Thanks!

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