Hi:
On Fri, 06 Oct 2006 19:00:18 +0800, <yaffs-request@lists.aleph1.co.uk>
wrote:
>> Yea, I was surprised with that as well, However, after some
>> considerations, I'm close to the conclusion that it's
>> controller-specific. The thing is that the OOB is spread across the
>> page IOT facilitate HW ECC, so it's (512b data, 16b OOB) x 4 actually
>> for each page, so each OOB write is costly. However, such things
>> appear more and more as manufacturers go producing cheaper chips that
>> need stronger ECC.

    Can you explain OOB write costly , and give me some driver example? Is
it only happen in some chip with
nand controller and 2k page NAND ?

Best Regards
         pengfushi


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