Atmel AT91 ARM Series, Application Note

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3
6320B–ATARM–05-Nov-07
Application Note
Figure 3-1. Small Page 8-bit Device Organization
Figure 3-2. Small Page 16-bit Device Organization
Figure 3-3. Large Page 8-bit Device Organization
Figure 3-4. Large Page 16-bit Device Organization
Abbreviations as used in Figure 3-1 through Figure 3-4 above
LSN0 LSN1 LSN2
Reserved Reserved Reserved Reserved Reserved Reserved Reserved
BI ECC0 ECC1 ECC2 S-ECC0 S-ECC1
Cell Array
512 Bytes SpareCell Array
16 Bytes
1
st
B 2
nd
B 3
rd
B 4
th
B 5
th
B 6
th
B 7
th
B 8
th
B 9
th
B 10
th
B 11
th
B 12
th
B 13
th
B 14
th
B 15
th
B 16
th
B
LSN0 LSN1 LSN2
B1
ECCa ECCb ECCc S-ECCa S-ECCb
LSB MSB LSB MSB
LSB
MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB MSB
Cell Array
256 Half Words
SpareCell Array
8 Half Words
Reserved Reserved Reserved Reserved Reserved Reserved Reserved
1
st
Half Word 2
nd
Half Word 3
rd
Half Word 4
th
Half Word 5
th
Half Word 6
th
Half Word 7
th
Half Word 8
th
Half Word
BI LSN1 LSN0 LSN2 Reserved Reserved Reserved Reserved Reserved Reserved Reserved ECC0 ECC1 ECC2 S-ECC0 S-ECC1
Cell Array
512 Bytes Cell Array
512 Bytes Cell Array
512 Bytes Cell Array
512 Bytes
Spare Cell
Area
16 Bytes
Spare Cell
Area
16 Bytes
Spare Cell
Area
16 Bytes
Spare Cell
Area
16 Bytes
1
st
B 2
nd
B 3
rd
B 4
th
B 5
th
B 6
th
B 7
th
B 8
th
B 9
th
B 10
th
B 11
th
B 12
th
B 13
th
B 14
th
B 15
th
B 16
th
B
BI BI LSN0
S-ECC0
ReservedReserved ECC0 ECC1 ECC2
LSB MSB LSB MSB
LSB
MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB MSB
LSN1 LSN2 Reserved S-ECC1 Reserved Reserved Reserved
Cell Array
256 Half Words
Cell Array
256 Half Words
Cell Array
256 Half Words
Cell Array
256 Half Words
Spare Cell
Area
8 Half Words
Spare Cell
Area
8 Half Words
Spare Cell
Area
8 Half Words
Spare Cell
Area
8 Half Words
1
st
Half Word 2
nd
Half Word 3
rd
Half Word 4
th
Half Word 5
th
Half Word 6
th
Half Word 7
th
Half Word 8
th
Half Word
• BI Invalid block information
• ECC ECC code for Cell Array data
• S-ECC ECC code for LSN data
• HW Half Word
• LSN Logical sector number