FlashDrive Product Manual
FlashDrive Product Manual © 1999 SANDISK CORPORATION
56
6.1.25
Write Long Sector - 32H or 33H
Bit ->
7
6
5
4
3
2
1
0
Command (7)
32H or 33H
C / D / H ( 6 )
1
LBA
1
Drive
Head (LBA 27-24)
Cyl High (5)
Cylinder High (LBA 23-16)
Cyl Low (4)
Cylinder Low (LBA 15-8)
Sec Num (3)
Sector Number (LBA 7-0)
Sec Cnt (2)
X
Feature (1)
X
This command is provided for compatibility
purposes and is similar to the Write Sector(s)
command except that it writes 516 bytes instead of
512 bytes. Only single sector Write Long
operations are supported. The transfer consists of
512 bytes of data transferred in word mode
followed by 4 bytes of ECC transferred in byte
mode. Because of the unique nature of the solid-
state FlashDrive, the four bytes of ECC
transferred by the host cannot be used by the
FlashDrive. The FlashDrive discards these four
bytes and writes the sector with valid ECC fields.
This command has the same protocol as the Write
Sector(s) command.
6.1.26
Write Multiple Command - C5H
Bit ->
7
6
5
4
3
2
1
0
Command (7)
C5H
C / D / H ( 6 )
X
LBA
X
Drive
Head
Cyl High (5)
Cylinder High
Cyl Low (4)
Cylinder Low
Sec Num (3)
Sector Number
Sec Cnt (2)
Sector Count
Feature (1)
X
Note:
The current revision of the FlashDrive only
supports a block count of 1 as indicated in the
Identify Drive Command information. This
command is provided for compatibility with
future products which may support a larger
block count.
This command is similar to the Write Sectors
command. The FlashDrive sets BSY within 400
nsec of accepting the command. Interrupts are not
presented on each sector but on the transfer of a
block which contains the number of sectors defined
by Set Multiple. Command execution is identical
to the Write Sectors operation except that the
number of sectors defined by the Set Multiple
command is transferred without intervening
interrupts.
DRQ qualification of the transfer is required only
at the start of the data block, not on each sector.
The block count of sectors to be transferred without
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