PixArt Imaging Inc.

PAN3204DB

Wireless Optical Mouse Sensor

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PixArt Imaging Inc.

E-mail: fae_service@pixart.com.tw

V3.0, Apr. 2008

0x01

Product_ID2

Bit

7

6

5

4

3

2

1

0

Field

PID[3:0]

Reserved[3:0]

Usage

The value in this register can’t change. PID[3:0] can be used to verify that the serial communications

link is OK. Reserved[3:0] is a value between 0x0 and 0xF, it can’t be used to verify that the serial

communications.

0x02

Motion_Status

Bit

7

6

5

4

3

2

1

0

Field

Motion

Reserved[1:0]

DYOVF

DXOVF

RES[2:0]

Usage

Motion_Status register allows the user to determine if motion has occurred since the last time it was

read. If so, then the user should read Delta_X and Delta_Y registers to get the accumulated motion. It

also tells if the motion buffers have overflowed since the last reading. The current resolution is also

shown.

Reading this register freezes the Delta_X and Delta_Y register values. Read this register before

reading the Delta_X and Delta_Y registers. If Delta_X and Delta_Y are not read before the motion

register is read a second time, the data in Delta_X and Delta_Y will be lost.

Field Name

Description

Motion

Motion since last report

0 = No motion (Default)

1 = Motion occurred, data ready for reading in Delta_X and Delta_Y registers

Reserved[1:0]

Reserved for future use

DYOVF

Motion Delta Y overflow, ΔY buffer has overflowed since last report

0 = No overflow (Default)

1 = Overflow has occurred

DXOVF

Motion Delta X overflow, ΔX buffer has overflowed since last report

0 = No overflow (Default)

1 = Overflow has occurred

Notes

RES[2:0]

Resolution in counts per inch

000 = 400

001 = 500

010 = 600

011 = 800

100 = 1000 (Default)

101 = 1200

110 = 1600