Hex Code

Command

Description

F0

Set remote mode

This command sets the remote mode. Data values are reported only in response to

a Read Data command.

EE

Set wrap mode

This command sets the wrap mode. This mode remains until hex FF or hex EC is

received.

EC

Reset wrap mode

This command resets the wrap mode

EB

Read data

This command requests that all data defined in the data packet format be transmit-

ted. This command is executed in either remote or stream mode. The data is trans-

mitted even if there has been no movement since the last report or the switch status

is unchanged. Following a Read Data command, the accumulators are cleared af-

ter a data transmission.

EA

Set stream mode

This command sets the stream mode

E9

Status request

When this command is issued by the system, the mouse responds with a 3-byte

status report as follows:

E8, XX

Set resolution

The mouse provides four resolutions selected by the second byte of this command

as follows:

E7

Set scaling 2:1

Scaling is used to provide a course/fine tracking response. At the end of a sample

interval in the stream mode, the current X and Y data values are converted to new

values. The sign bits are not involved in this conversion. 2:1 scaling is only per-

formed in stream mode. In response to a Read Data command, the mouse will

transmit the current value before conversion.

E6

Reset scaling

This command restores 1:1 scaling

HT6523

Rev. 1.20

5

March 6, 2003

Byte

Bit

Description

3

2

1

0~7

0~7

7

6

5

4

3

2

1

0

Current sampling rate

Current resolution setting

always = 0

0 = Stream mode, 1 = Remote mode

0 = Disabled, 1 = Enabled

0 = Scaling 1:1, 1 = Scaling 2:1

always = 0

1 = Left button pressed

Reserved for middle button

1 = Right button pressed

Second Byte

Resolution (Counts per mm)

hex XX

200 DPI

320 DPI

400 DPI

hex 00

hex 01

hex 02

hex 03

1

2

4

8

1

3

6

12

2

4

8

16

Input

Output

0

1

2

3

4

5

N(

³6)

0

1

1

3

6

9

2.0

´ N