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CompactFlash Memory Card Product Manual
6.1.13
Read Verify Sector(s) - 40H, 41H
Bit ->
7
Command (7)
C/D/H (6)
1
Cyl High (5)
Cyl Low (4)
Sec Num (3)
Sec Cnt (2)
Feature (1)
This command is identical to the Read Sectors
command, except that DRQ is never set and no
data is transferred to the host. When the
command is accepted, the CompactFlash Memory
Card sets BSY.
When the requested sectors have been verified,
the CompactFlash Memory Card clears BSY and
generates an interrupt. Upon command completion,
the
Command Block
6.1.14
Recalibrate - 1XH
Bit ->
7
Command (7)
C/D/H (6)
1
Cyl High (5)
Cyl Low (4)
Sec Num (3)
Sec Cnt (2)
Feature (1)
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
68
6
5
LBA
1
Drive
Cylinder High (LBA 23-16)
Cylinder Low (LBA 15-8)
Sector Number (LBA 7-0)
Registers
contain the
6
5
LBA
1
Drive
SanDisk CompactFlash Memory Card Product Manual © 1998 SANDISK CORPORATION
4
3
2
40H or 41H
Head (LBA 27-24)
Sector Count
X
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.
4
3
2
1XH
X
X
X
X
X
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).
1
0
1
0
X
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