Read Verify Sector(S) - 40H & 41H; Recalibrate - 1Xh - SanDisk SDP3B Product Manual

SDP3B FlashDisk 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 SDP3B FlashDisk sets
BSY.
When the requested sectors have been verified,
the SDP3B FlashDisk clears BSY and generates
an interrupt. Upon command completion, the
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 SDP3B FlashDisk and is provided for
compatibility purposes. After this command is
executed the Cyl High and Cyl Low as well as the
68
6 5 4
40H + 41H
LBA 1 Drive
Cylinder High (LBA 23-16)
Cylinder Low (LBA 15-8)
Sector Number (LBA 7-0)
Sector Count
6 5 4
LBA 1 Drive
SanDisk SDP3B FlashDisk Product Manual © 1998 SANDISK CORPORATION
3 2
Head (LBA 27-24)
X
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.
3 2
1XH
X
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