HANBit
HFDOM40K3R
C/D/H(6)
X
Drive
X
Cyl High(5)
Cyl Low(4)
Sec Num(3)
Sec Cnt(2)
Feature(1)
X
X
X
X
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)
C/D/H(6)
32h or 33h
Drive
1
LBA
1
Head(LBA 27 – 24)
Cyl High(5)
Cyl Low(4)
Sec Num(3)
Sec Cnt(2)
Feature(1)
Cylinder High (LBA 23 – 16)
Cylinder Low (15 – 8)
Sector Number (LBA 7 – 0)
X
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)
C/D/H(6)
C5h
X
LBA
X
Drive
Head
Cyl High(5)
Cyl Low(4)
Sec Num(3)
Sec Cnt(2)
Feature(1)
Cylinder High
Cylinder Low
Sector Number
Sector Count
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.
URL:www.hbe.co.kr
26 / 30
HANBit Electronics Co., Ltd.
Rev. 2.0 (October. 2004)
HANBIT [ HANBIT ELECTRONICS CO.,LTD ]
