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ATA Command Description
When the requested sectors have been verified, the card clears BSY and generates an interrupt.
Upon command completion, the Command Block registers contain the cylinder, head, and
sector number of the last sector verified.
If an error occurs, the verify terminates at the sector where the error occurs. The Command
Block registers contain the cylinder, head and sector number of the sector where the error
occurred. The Sector Count Register contains the number of sectors not yet verified.
Table 5-21
Command (7)
C/D/H (6)
Cyl High (5)
Cyl Low (4)
Sec Num (3)
Sec Cnt (2)
Feature (1)
5.1.15
Recalibrate–1XH
This command is effectively a NOP command to the CompactFlash Memory Card and is
provided for compatibility purposes. After this command is executed the Cyl High and Cyl
Low as well as the Head number will be 0 and Sec Num will be 1 if LBA=0 and 0 if LBA=1
(i.e., the first block in LBA is 0 while CHS mode the sector number starts at 1).
Table 5-22
Command (7)
C/D/H (6)
Cyl High (5)
Cyl Low (4)
Sec Num (3)
Sec Cnt (2)
Feature (1)
5.1.16
Request Sense–03H
This command requests an extended error code after a command ends with an error.
Table 5-23
Command (7)
C/D/H (6)
Cyl High (5)
Cyl Low (4)
Sec Num (3)
Sec Cnt (2)
Feature (1)
02/07, Rev. 12.0
Read Verify Sector(s)
Bit
7
6
1
LBA
Recalibrate
Bit
7
6
1
LBA
Request Sense
Bit
7
6
1
X
5-18
SanDisk CompactFlash Card OEM Product Manual
5
4
3
2
40H or 41H
1
Drive
Head (LBA 27-24)
Cylinder High (LBA 23-16)
Cylinder Low (LBA 15-8)
Sector Number (LBA 7-0)
Sector Count
X
5
4
3
2
1XH
1
Drive
X
X
X
X
X
5
4
3
2
03H
1
Drive
X
X
X
X
X
© 2007 SanDisk Corporation
1
0
1
0
X
1
0
X
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