HFDOM40S6RXXX Datasheet, PDF (26/30 Pages) Hanbit Electronics Co.,Ltd – 40Pin Flash Disk Module Min.128MB ~ Max.4G, True IDE Interface

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HFDOM40S6Rxxx
Feature(1)
X
Write Buffer
The Write Buffer command enables the host to overwrite contents of the CompactFlash Storage 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.
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 (15 – 8)
Sec Num(3)
Sector Number (LBA 7 – 0)
Sec Cnt(2)
X
Feature(1)
X
Write Long Sector
This command 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
CompactFlash Storage Card, the four bytes of ECC transferred by the host may be used by the CompactFlash
Storage Card. The CompactFlash Storage Card may discard these four bytes and write the sector with valid ECC
data. This command has the same protocol as the Write Sector(s) command. Use of this command is not
recommended.
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
Write Multiple Command
Note: The current revision of the CompactFlash Storage Card 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 CompactFlash Storage Card 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 intervening interrupts is programmed by the Set Multiple Mode command,
which must be executed prior to the Write Multiple command.
When the Write Multiple command is issued, the Sector Count Register contains the number of sectors (not the
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Rev. 1.1 (August, 2005)
26 / 30
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