Samsung S5PC100 User Manual page 480

S5PC100 USER'S MANUAL (REV1.0)
7.1 NAND FLASH CONFIGURATION REGISTER (NFCONF, R/W, ADDRESS = 0XE720_0000)
NFCONF Bit
Reserved [31]
MLCClkCtrl
[30]
Reserved [30:26]
MsgLength [25]
ECCType [24:23]
Reserved [22:15]
TACLS [14:12]
Reserved [11]
TWRPH0 [10:8]
Reserved [7]
TWRPH1 [6:4]
MLCFlash [3]
PageSize [2]
AddrCycle [1]
Reserved [0]
Reserved
Clock control for 4-bit ECC & 8-bit ECC engine.
0: Recommended when system clock is more than 66MHz.
1: Recommended when system clock is less than 66MHz
Reserved
0 = 512 byte Message Length
1 = 24 byte Message Length
This bit indicates what kind of ECC should be used.
00 = 1-bit ECC
10 = 4-bit ECC
01 = 8-bit ECC
Reserved
CLE & ALE duration setting value (0~7)
Duration = HCLK x TACLS
Reserved
TWRPH0 duration setting value (0~7)
Duration = HCLK x ( TWRPH0 + 1 )
Reserved
TWRPH1 duration setting value (0~7)
Duration = HCLK x ( TWRPH1 + 1 )
This bit indicates type of NAND Flash memory used.
0 = SLC NAND Flash
1 = MLC NAND Flash
This bit indicates the page size of NAND Flash Memory,
If MLCFlash is 0, the value of PageSize is following:
0 = 2048 Bytes/page
1 = 512 Bytes/page
If MLCFlash is 1, the value of PageSize is following:
0 = 4096 Bytes/page
1 = 2048 Bytes/page
This bit indicates the number of Address cycle of NAND Flash
memory.
If Page Size is 512 Bytes,
0 = 3 address cycle
1 = 4 address cycle
If page size is 2K or 4K,
0 = 4 address cycle
1 = 5 address cycle
Reserved
Description
NAND FLASH CONTROLLER
Reset Value
0
0
000
0
0
000000000
001
0
000
0
000
0
0
0
0
5.4-15