HANBit

HFDOM40K3R

URL:www.hbe.co.kr

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HANBit Electronics Co., Ltd.

Rev. 2.0 (October. 2004)

C/D/H(6)

X

Drive

X

Cyl High(5)

X

Cyl Low(4)

X

Sec Num(3)

X

Sec Cnt(2)

X

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.