User Manual
900S Series Industrial Grade CFast Product Manual v2.0Cactus Technologies
®
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S.M.A.R.T. Read Remap Data
6.10.
This command returns spare block information. When issuing this command, set the Sector Count
register to 1. The information returned is the number of initial spare blocks per ash chip and the
current number of spare blocks per ash chip. The format is as follows:
Bytes Description
0-31 Initial number of spare blocks for ash chip 0 to 15 (2 bytes per chip)
32-63 Current number of spare blocks for ash chip 0 to 15 (2 bytes per chip)
64-511 Reserved
S.M.A.R.T. Read Wear Level Data
6.11.
This command returns 4 sectors of wear level information. When issuing this command, set the
Sector Count register to 4. The information returned is the distribution of blocks in each of 1024
wear level classes. For each class, the entry contains the number of blocks in that class. The format
of the returned data is as follows, where n denotes the sector number from 0 to 3:
Bytes Description
0-1 Number of blocks in wear level class 256*n + 0
2-3 Number of blocks in wear level class 256*n + 1
---
508-509 Number of blocks in wear level class 256*n + 254
510-511 Number of blocks in wear level class 256*n + 255
Thus, the rst sector (n= 0) returns information about wear level class 0 to 255. The 2nd sector (n=
1) returns information about wear level class 256 to 511, and so on. A block moves from one wear
level class to the next once it had reached the 'Wear Level Threshold' specied during pre-format.