21

Delta_X_L

Address: 0x03

Access: Read

Reset Value: 0x00

Data Type: Eight bit 2’s complement number.

USAGE: X movement is counts since last report. Absolute value is determined by resolution. Reading clears the

register.

Bit

76543210

Field

Bit

7

6

54

32

1

0

Field

Delta_Y_L

Address: 0x04

Access: Read

Reset Value: 0x00

Data Type: Eight bit 2’s complement number.

USAGE: Y movement is counts since last report. Absolute value is determined by resolution. Reading clears the

register.

00

01

02

7FE

7FF

+2047

+2046

+1

+2

FF

FE

801

800

0

-1

-2

-2047

-2048

Motion

Delta_X

00

01

02

7FE

7FF

+2047

+2046

+1

+2

FF

FE

801

800

0

-1

-2

-2047

-2048

Motion

Delta_Y

NOTE:

PixArt recommends that registers 0x02, 0x03, 0x04 and 0x05 be read sequentially.

NOTE:

PixArt recommends that registers 0x02, 0x03, 0x04 and 0x05 be read sequentially.

Bit

7

6

54

32

1

0

Field

Delta_XY_H

Address: 0x05

Access: Read

Reset Value: 0x00

Data Type: 2’s complement number, upper 4 bits of Delta_X and Delta_Y.

USAGE: Delta_XY_H must be read after Delta_X_L and Delta_Y_L to have the full motion data. Reading clear the

registers.

NOTE:

PixArt recommends that registers 0x02, 0x03, 0x04 and 0x05 be read sequentially.

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PixArt Imaging Inc.

PixArt Imaging Inc.

ADNS-7550 Integrated Molded Lead-Frame DIP Sensor