HANBit

HFDOM40MRxxx

URL:www.hbe.co.kr

11 / 11

HANBit Electronics Co., Ltd.

Rev. 1.0 (November. 2003)

Data Register

The Data Register is a 16-bit register, and it is used to transfer data blocks between the CompactFlash

Storage Card data buffer and the Host. This register overlaps the Error Register. The table below describes

the combinations of data register access and is provided to assist in understanding the overlapped Data

Register and Error/Feature Register rather than to attempt to define general PCMCIA word and byte

access modes and operations. See the PCMCIA PC Card Standard Release 2.0 for definitions of the Card

Accessing Modes for I/O and Memory cycles.

15

14

13

12

11

10

9

8

Data (15:8)

7

6

5

4

3

2

1

0

Data (7:0)

Feature Register

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.

7

6

5

4

3

2

1

0

Command specific

Sector Count Register

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.

7

6

5

4

3

2

1

0

Sector Count