size1
size1
size1
size1
inactive
P
P
E
E
512 bytes
512 bytes
1
1
1
1
U
U
E
E
512 bytes
512 bytes
U
U
E
E
512 bytes
512 bytes
P
P
E
E
512 bytes
512 bytes
1
1
size1
size1
1
0
i.
Ecc0
Ecc1
Pad
Pad
size1
size1
size0
size0
size1
size1
size0
size0
size1
size1
size0
Data0
Data1
Ecc0
Ecc1
non-ECC spares
0
1
0
1
1
inactive
0
Write
Read
6
5
P
E
P
E
Mode
Size0
Size1
Per-sector spares, separate ECC
Spares covered by sector ECC.
All ECC at the end.
Prot0
Prot1
1
0
1
0
ECC
Data0
Data1
Ecc0
Ecc1
non-ECC spares
0
1
1
0
Read
4
SU
E
Mode
Size0
Size1
Per-sector spares, separate ECC
Spares not covered by ECC.
All ECC at the end.
ECC
Unprot0
Unprot1
inactive
size1
size1
size0
size0
size0
size0
Data0
Data1
non-ECC spares
0
1
0
1
inactive
Write
Read
6
11
P
1+E
P
E
Mode
Size0
Size1
Per-sector spares, separate ECC
Spares covered by sector ECC.
All ECC at the end, left-padded.
Prot0
Prot1
1
0
1
0
ECC
size0
Data0
Data1
Sector data
non-ECC spares
0
1
Read
9
SU
E
Mode
Size0
Size1
Per-sector spares, separate ECC
Spares not covered by ECC.
All ECC at the end, left-padded.
ECC
Unprot0
Unprot1
inactive
Ecc0
Ecc1
Pad
Pad
1
1
size1
size1
1
0
i.
i.
Sector data
Sector data
Sector data
Sector data
Sector data
Sector data
Sector data
M9
M
10
M
11
M
12
0
1
inactive
Write
6
0
U+1+E
0
1
Write
6
0
U+E
Preliminary
www.ti.com
Architecture
5.2.4.12.3.3.3 Per-Sector Spare Mapping, With ECC Separated at the End of the Page
In these schemes (
), each 512-byte sector of the main area is associated with two sections
of the spare area.
•
ECC section, all aligned at the end of the page
•
other data section, aligned before the ECCs, each of which may or may not be protected by its
sectors ECC
Figure 5-40. NAND Page Mapping and ECC: Per-Sector Schemes, with Separate ECC
625
SPRUGX9 – 15 April 2011
General-Purpose Memory Controller (GPMC)
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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