HANBit

HFDOM44KRxxx

URL:www.hbe.co.kr

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HANBit Electronics Co., Ltd.

Rev. 1.0 (December, 2004)

Data Register Access

DATA Register

CE2-

CE1-

A0

Offset

Data Bus

Word Data Register

0

0

X

0,8,9

D15-D0

Even Data Register

1

0

0

0,8

D7-D0

Odd Data Register

1

0

1

9

D7-D0

Odd Data Register

0

1

X

8,9

D15-D8

Error/Feature Register

1

0

1

1,Dh

D7-D0

Error/Feature Register

0

1

X

1

D15-D8

Error/Feature Register

0

0

X

Dh

D15-D8

2) Error Register (Address – 1F1h[171h];Offset 1,0Dh Read Only)

This register contains additional information about the source of an error when an error is

indicated in bit 0 of the Status register. The bits are defined as follows:

D7

D6

D5

D4

D3

D2

D1

D0

BBK

UNC

0

IDNF

0

ABRT

0

AMNF

Error Register

This register is also accessed on data bits D15-D8 during a write operation to offset 0 with -CE2 low and -CE1 high.

Bit 7 (BBK): this bit is set when a Bad Block is detected.

Bit 6 (UNC): this bit is set when an Uncorrectable Error is encountered.

Bit 5: this bit is 0.

Bit 4 (IDNF): the requested sector ID is not valid error or cannot be found.

Bit 3: this bit is 0.

Bit 2 (Abort) This bit is set if the command has been aborted because of a CompactFlash

Storage Card status condition: (Not Ready, Write Fault, etc.) or when an invalid command

has been issued.

Bit 1 This bit is 0.

Bit 0 (AMNF) This bit is set in case of a general error happened.

3) Feature Register(Address – 1F1h[171h];Offset 1,0Dh Writer Only)

This register provides information regarding features of the CompactFlash Storage Card that the host can utilize.

This register is also accessed on data bits D15-D8 during a write operation to Offset 0 with -CE2 low and -CE1 high.

BIT DESCRIPTION-

7

6

5

4

3

2

1

0

Command specific

4) Sector Count Register(Address – 1F2h[172h];Offset 2)

This register contains the numbers of sectors of data requested to be transferred on a read or

write operation between the host and the CompactFlash Storage Card. If the value in this register is zero, a count

of 256 sectors is specified. If the command was successful, this register is zero at command completion. If not

successfully completed, the register contains the number of sectors that need to be transferred in order to

complete the request.

BIT DESCRIPTION-

7

6

5

4

3

2

1

0

Sector Count

5) Sector Number (LBA 7-0) Register(Address–1F3h[173h];Offset 3)

This register contains the starting sector number or bits 7-0 of the Logical Block Address (LBA)