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11.3.1.2 Spare Block Count Worst Chip Attribute Threshold
This attribute gives information about the amount of available spare blocks on the flash chip that has the lowest
current number of spare blocks.
Table 117: Spare Block Count Attribute for SMART structure version 0010h
Offset
0
1..2
3
4
5..7
8..10
11
Value
D5h
0003h
64h
64h
00h
Description
Attribute ID – Reallocation Count
Flags – Pre-fail type, value is updated during normal operation
Attribute value. This value is fixed at 100.
Attribute value (worst value)
Initial number of spare blocks of the flash chip with the lowest current number of
spare blocks
Current number of spare blocks of the flash chip with the lowest current number
of spare blocks
Reserved
11.3.1.3 Erase Count Attribute
This attribute gives information about the amount of flash block erases that have been performed.
Table 118: Erase Count Attribute for SMART structure version 0010h
Offset
0
1..2
3
4
5..10
11
Value
E5h
0003h
00h
Description
Attribute ID – Erase Count Usage (vendor specific)
Flags – Pre-fail type, value is updated during normal operation
Attribute value. The value returned here is an estimation of the remaining card
life, in percent, based on the number of flash block erases compared to the target
number of erase cycles per block.
Attribute value (worst value)
Estimated total number of block erases
Reserved
This attribute is used for the SMART Return Status command. If the attribute value field is less than the erase
count threshold, the SMART Return Status command will indicate a threshold exceeded condition.
11.3.1.4 Total ECC Errors Attribute
This attribute gives information about the total number of ECC errors that have occurred on flash read commands.
This attribute is not used for the SMART Return Status command.
Table 119: Total EC C Errors Attribute for SMART structure version 0010h
Offset
0
1..2
3
4
5..8
9..10
11
Value
CBh
0002h
64h
64h
00h
Description
Attribute ID – Number of ECC errors
Flags – Advisory type, value is updated during normal operation
Attribute value. This value is fixed at 100.
Attribute value (worst value)
Total number of ECC errors (correctable and uncorrectable)
-
Reserved
11.3.1.5 Correctable ECC Errors Attribute
This attribute gives information about the total number of correctable ECC errors that have occurred on flash read
commands. This attribute is not used for the SMART Return Status command.
Swissbit AG
Industriestrasse 4
Swissbit reserves the right to change products or specifications without notice.
Revision: 1.00
CH-9552 Bronschhofen
Switzerland
www.swissbit.com
industrial@swissbit.com
C-440_data_sheet_CF-HxBU_Rev100.doc
Page 89 of 102
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