HANBit

HFDOM40K3R

URL:www.hbe.co.kr

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HANBit Electronics Co., Ltd.

Rev. 2.0 (October. 2004)

Sec Num(3)

X (LBA 7 – 0)

Sec Cnt(2)

X

Feature(1)

X

Seek

This command is effectively a NOP command to the CompactFlash Storage Card although it does perform a range

check of cylinder and head or LBA address and returns an error if the address is out of range.

Set Features - EFh

Bit->

7

6

5

4

3

2

1

0

Command(7) EFh

C/D/H(6)

X

Drive

X

Cyl High(5)

X

Cyl Low(4)

X

Sec Num(3)

X

Sec Cnt(2)

Configure

Feature(1)

Feature

Set Features

This command is used by the host to establish or select certain features. Table 45 defines all features that are

supported.

Feature Supported

Feature

Operation

01h

Enable 8 – bit data transfers

0Ah

Enable Power Level 1 commands

55h

Disable Read Look Ahead

66h

Disable Power on Reset(POR) establishment of defaults at Soft Reset

69h

NOP – Accepted for backward compatibility

81h

Disable 8 – bit data transfer

8Ah

Disable Power Level 1 commands

96h

NOP – Accepted for backward compatibility

97h

Accepted for backward compatibility . Use of this Feature is not recommended

9Ah

Set the host current source capability. Allows tradeoff between current drawn and

read/write speed.

BBh

4 bytes of data apply on Read/Write Long commands

CCh

Enable Power on Reset (POR) establishment of defaults at Soft Reset

Features 01h and 81h are used to enable and clear 8 bit data transfer modes in True IDE Mode. If the 01h feature

command is issued all data transfers will occur on the low order D7D0 data bus and the IOIS16 signal will not be

asserted for data register accesses.

Features 0Ah and 8Ah are used to enable and disable Power Level 1 commands. Feature 0Ah is the default

feature for the CompactFlash Storage Card with extended power.