Laptop User Manual

S3C2440A RISC MICROPROCESSOR NAND FLASH CONTROLLER
6-11
Nand Flash configuration Register
Register Address R/W Description Reset Value
NFCONF 0x4E000000 R/W NAND Flash Configuration register 0x0000100X
NFCONF Bit Description Initial State
Reserved [15:14]
Reserved
-
TACLS [13:12]
CLE & ALE duration setting value (0~3)
Duration = HCLK x TACLS
01
Reserved [11]
Reserved
0
TWRPH0 [10:8]
TWRPH0 duration setting value (0~7)
Duration = HCLK x ( TWRPH0 + 1 )
000
Reserved [7]
Reserved
0
TWRPH1 [6:4]
TWRPH1 duration setting value (0~7)
Duration = HCLK x ( TWRPH1 + 1 )
000