OneNAND512/OneNAND1GDDP
FLASH MEMORY
37
7.26 NAND Flash Write Protection Status (R): F24Eh, default=0002h
US
(Unlocked Status): ’1’ value of this bit specifies that there is unlocked block in NAND Flash.
LS
(Locked Status): ’1’ value of this bit specifies that there is locked block in NAND Flash.
LTS
(Lock-tighten Status): ’1’ value of this bit specifies that ’Locked block(s)’ is lock-tighten.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved(0000000000000)
US
LS
LTS
7.27 ECC Status Register(R): FF00h, default=0000h
ERm
(ECC Error for Main area data) &
ERs
(ECC Error for Spare area data)
ERm0/1/2/3 is for first/second/third/fourth selected sector main of BufferRAM, ERs0/1/2/3 is for first/second/third/fourth selected sector spare of BufferRAM.
ERm and ERs show the number of error in a sector as a result of ECC check at the load operation.
ERm and ERs bits are updated in boot loading operation, too.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
ERm3
ERs3
ERm2
ERs2
ERm1
ERs1
ERm0
ERs0
NOTE
:
1. 3bits or more error detection is not supported.
ERm, ERs
ECC Status
00
No Error
01
1-bit error(correctable)
10
2-bit error(uncorrectable)
1)
11
Reserved
7.28 ECC Result of first selected Sector Main area data Register (R): FF01h, default=0000h
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved(0000)
ECCposWord0
ECCposIO0
7.29 ECC Result of first selected Sector Spare area data Register (R): FF02h, default=0000h
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved(0000000000)
ECClogSector0
ECCposIO0
7.30 ECC Result of second selected Sector Main area data Register (R): FF03h, default=0000h
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved(0000)
ECCposWord1
ECCposIO1
7.31 ECC Result of second selected Sector Spare area data Register (R): FF04h, default=0000h
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved(0000000000)
ECClogSector1
ECCposIO1
7.32 ECC Result of third selected Sector Main area data Register (R): FF05h, default=0000h
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved(0000)
ECCposWord2
ECCposIO2