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Whitepaper
Date: 2009/9/21
NAND is similar to a hard-disk drive. It is sector-based (page-based), and fitted for storing sequential data such as picture files. The host system performs its data transfer (reads and writes) to LBA (logical block address) only. For example, the FAT information would also be stored from LBA X to LBA Y. The assigned allocation area for the FAT does not move in LBA, whereas the actual FAT table for the PBA (Physical Block Address) moves randomly from time to time. The PBA is the physical address of the NAND Flash. A mapping table is also required for the controller to remap the LBA to the PBA of the NAND Flash.
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