Laptop User Manual

S3C2440A RISC MICROPROCESSOR NAND FLASH CONTROLLER
6-21
BLOCK ADDRESS REGISTER
Register Address R/W Description Reset Value
NFSBLK 0x4E000038 R/W NAND Flash programmable start block address 0x000000
NFEBLK 0x4E00003C R/W NAND Flash programmable end block address
Nand Flash can be programmed between start and end
address.
When the Soft lock or Lock-tight is enabled and the Start
and End address has same value, Entire area of NAND
flash will be locked.
0x000000
NFSBLK Bit Description Initial State
SBLK_ADDR2 [23:16]
The 3
rd
block address of the block erase operation
0x00
SBLK_ADDR1 [15:8]
The 2
nd
block address of the block erase operation
0x00
SBLK_ADDR0 [7:0]
The 1
st
block address of the block erase operation
(Only bit [7:5] are valid)
0x00
Note
Advance Flash’s block Address start from 3-address cycle. So block address register only needs 3-bytes.
NFEBLK Bit Description Initial State
EBLK_ADDR2 [23:16]
The 3
rd
block address of the block erase operation
0x00
EBLK_ADDR1 [15:8]
The 2
nd
block address of the block erase operation
0x00
EBLK_ADDR0 [7:0]
The 1
st
block address of the block erase operation
(Only bit [7:5] are valid)
0x00
Note
Advance Flash’s block Address start from 3-address cycle. So block address register only needs 3-bytes.