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Bad Block Marker for NAND-Boot on BF548

Question asked by gpetrowitsch on Apr 28, 2010
Latest reply on Apr 28, 2010 by gpetrowitsch

Dear all,

 

I'm using the NAND-Boot mode on a BF548. The reference manual

says, that a bad block marker has to be written to the last byte

of the spare area. However, as far as I can tell, the Blackfins

assume either 8 bytes or 16 bytes of spare area for each 512 bytes

block of data area.

 

I'm using a device from Micron, which has 28 bytes of spare area

for each 512 byte block of data area (page contains 8 such blocks).

For this device, do I have to write the bad block mark really into the

very last byte (i.e. column address 4319) or do I have to use the byte

at address 4096-1 + 8x16 = column address 4223 ?

 

Thanks & kind regards,

Gerhard

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