4 ecc parity register, 5 ecc nparity register – Rainbow Electronics AT91CAP9S250A User Manual
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6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
25.4.4
ECC Parity Register
Register Name:
ECC_PR
Access Type:
Read-only
Once the entire main area of a page is written with data, the register content must be stored at any free location of the
spare area.
• BITADDR
During a page read, this value contains the corrupted bit offset where an error occurred, if a single error was detected. If
multiple errors were detected, this value is meaningless.
• WORDADDR
During a page read, this value contains the word address (8-bit or 16-bit word depending on the memory plane organiza-
tion) where an error occurred, if a single error was detected. If multiple errors were detected, this value is meaningless.
25.4.5
ECC NParity Register
Register Name:
ECC_NPR
Access Type:
Read-only
• NPARITY
Once the entire main area of a page is written with data, the register content must be stored at any free location of the
spare area.
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
WORDADDR
7
6
5
4
3
2
1
0
WORDADDR
BITADDR
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
NPARITY
7
6
5
4
3
2
1
0
NPARITY