Samsung S3C2451X User Manual page 174

NAND FLASH CONTROLLER
7.13.15 ECC 0/1/2 FOR 8BIT ECC STATUS REGISTER
Register Address
NF8ECCERR0 0x4E00_0044
NF8ECCERR1 0x4E00_0048
NF8ECCERR2 0x4E00_004C
NFECCERR0
MLC8ECCBusy
MLC8ECCReady
MLC8FreePage
MLC8ECCError
MLC8ErrLocation2
Reserved
MLC8ErrLocation1
Note : These values are updated when ECCDecodeDone (NFSTAT[6]) is set ('1').
NFECCERR1
MLCErrLocation5
Reserved
MLCErrLocation4
Reserved
MLCErrLocation3
Note : These values are updated when ECCDecodeDone (NFSTAT[6]) is set ('1').
NFECCERR1
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
7-26
Specifications and information herein are subject to change without notice.
R/W
R NAND Flash ECC Error Status register 0
R NAND Flash ECC Error Status register 1
R NAND Flash ECC Error Status register 2
Bit
[31] Indicates the 8-bit ECC decoding engine is searching
whether a error exists or not
0: Idle
[30] ECC Ready bit
[29] Inidicates the page data read from NAND flash has all 'FF'
value.
[28:25] 8-bit ECC decoding result
0000: No error
0010: 2-bit error
0100: 4-bit error
0110: 6-bit error
1000: 8-bit error
1010 ~1111: reserved
[24:15] Error byte location of 2
[14:10] Reserved
[9:0] Error byte location of 1
Bit
[31:22] Error byte location of 5
[21] Reserved
[20:11] Error byte location of 4
[10] Reserved
[9:0] Error byte location of 3
Bit
S3C2451X RISC MICROPROCESSOR
Description
Description
1: Busy
0001: 1-bit error
0011: 3-bit error
0101: 5-bit error
0111: 7-bit error
1001: Uncorrectable
nd
bit error
st
bit error
Description
th
bit error
th
bit error
rd
bit error
Description
Reset Value
0x4000_0000
0x0000_0000
0x0000_0000
Initial State
b'0
b'1
b'0
b'0000
0x000
0x00
0x000
Initial State
0x000
b'0
0x000
b'0
0x000
Initial State