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ATA Command Description SanDisk CompactFlash Card OEM Product Manual
Table 5-33 represents the information in the buffer. This command is unique to SanDisk
CompactFlash Memory cards.
Table 5-33 Translate Sector Information
Address Information
00 Head
01-02 Cylinder
03 Sector
04-07 LBA
08 Chip
09-0A Block
0B Page
0C-1FF Reserved
5.1.24 Wear Level–F5H
This command is effectively a NOP command and only implemented for backward
compatibility with earlier SanDisk SDP series products. The Sector Count Register will
always be returned with an 00H indicating Wear Level is not needed.
Table 5-34 Wear Level
Bit 7 6 5 4 3 2 1 0
Command (7) F5H
C/D/H (6) X X X Drive Flag
Cyl High (5) X
Cyl Low (4) X
Sec Num (3) X
Sec Cnt (2) Completion Status
Feature (1) X
5.1.25 Write Buffer–E8H
The Write Buffer command enables the host to overwrite contents of the card's sector buffer
with any data pattern desired. This command has the same protocol as the Write Sector(s)
command and transfers 512 bytes.
Table 5-35 Write Buffer
Bit 7 6 5 4 3 2 1 0
Command (7) E8H
C/D/H (6) X Drive X
Cyl High (5) X
Cyl Low (4) X
Sec Num (3) X
Sec Cnt (2) X
Feature (1) X
02/07, Rev. 12.0 5-24 © 2007 SanDisk Corporation