Samsung S3C2451X User Manual page 168

NAND FLASH CONTROLLER
The NFSLK and NFEBLK can be changed while Soft lock bit(NFCONT[16]) is enabled. But cannot be changed
when Lock-tight bit(NFCONT[17]) is set.
NFEBLK+1
NFEBLK
NFSBLK
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
7-20
Specifications and information herein are subject to change without notice.
NAND flash memory
Locked area
(Read only)
Prorammable/
Readable
Area
Locked area
(Read only)
Figure 7-8. Softlock and Lock-tight
Address
High
NFSBLK
NFEBLK
Low
when Lock-tight =1
or SoftLock=1
S3C2451X RISC MICROPROCESSOR
When NFSBLK > NFEBLK
Locked Area
(Read only)