OneNAND512Mb(KFG1216U2B-xIB6)
2.8.26 ECC Status Register FF00h (R)
FLASH MEMORY
This Read register shows the Error Correction Status. The OneNAND can detect 1- or 2-bit errors and correct 1-bit errors. 3-bit or
more error detection and correction is not supported.
ECC can be performed on the NAND Flash main and spare memory areas. The ECC status register can also show the number of
errors in a sector as a result of an ECC check in during a load operation. ECC status bits are also updated during a boot loading oper-
ation.
ECC registers will be reset when another command is issued.
FF00h, default = 0000h
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
ERm3
ERs3
ERm2
ERs2
ERm1
ERs1
ERm0
ERs0
Error Status
ERm, ERs
ECC Status
No Error
00
01
10
11
1 bit error(correctable)
2 bit error (uncorrectable)
Reserved
ECC Information[15:0]
Item
Definition
Description
Status of errors in the 1st selected sector of the main BufferRAM
as a result of an ECC check during a load operation.
Also updated during a Bootload operation.
1st selected sector of
the main BufferRAM
ERm0
Status of errors in the 2nd selected sector of the main BufferRAM
as a result of an ECC check during a load operation.
Also updated during a Bootload operation.
2nd selected sector of
the main BufferRAM
ERm1
ERm2
ERm3
ERs0
ERs1
ERs2
ERs3
Status of errors in the 3rd selected sector of the main BufferRAM
as a result of an ECC check during a load operation.
Also updated during a Bootload operation.
3rd selected sector of
the main BufferRAM
Status of errors in the 4th selected sector of the main BufferRAM
as a result of an ECC check during a load operation.
Also updated during a Bootload operation.
4th selected sector of
the main BufferRAM
Status of errors in the 1st selected sector of the spare BufferRAM
as a result of an ECC check during a load operation.
Also updated during a Bootload operation.
1st selected sector of
the spare BufferRAM
Status of errors in the 2nd selected sector of the spare BufferRAM
as a result of an ECC check during a load operation.
Also updated during a Bootload operation.
2nd selected sector of
the spare BufferRAM
Status of errors in the 3rd selected sector of the spare BufferRAM
as a result of an ECC check during a load operation.
Also updated during a Bootload operation.
3rd selected sector of
the spare BufferRAM
Status of errors in the 4th selected sector of the spare BufferRAM
as a result of an ECC check during a load operation.
Also updated during a Bootload operation.
4th selected sector of
the spare BufferRAM
51
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