19

Shutter_Upper

Address: 0x06

Access: Read

Reset Value: Undefined

Bit

76

54

3210

Field

Shutter_Lower

Address: 0x07

Access: Read

Reset Value: Undefined

Bit

76

54

3210

Field

Data Type:

Sixteen bit unsigned integer

USAGE:

Units are clock cycles. Read Shutter_Upper first, then Shutter_Lower. They should be read consecu-

tively. The shutter is adjusted to keep the average and maximum pixel values within normal operating

ranges. The shutter value is automatically adjusted.

Maximum_Pixel

Address: 0x08

Access: Read

Reset Value: Undefined

Bit

7

6

5

4

3

2

1

0

Field

Data Type:

Eight-bit number

USAGE:

Maximum Pixel value in current frame. Minimum value = 0, maximum value = 254. The maximum pixel

value can vary with every frame.

SQUAL

Address: 0x05

Access: Read

Reset Value: Undefined

Bit

7

6

5

4

3

2

1

0

Field

Data Type:

Upper 8 bits of a 9-bit unsigned integer

USAGE:

SQUAL (Surface Quality) is a measure of the number of valid features visible by the sensor in the current

frame. The maximum SQUAL register value is 167. Since small changes in the current frame can result

in changes in SQUAL, variations in SQUAL when looking at a surface are expected.

PixArt Imaging Inc.

Low Power LED Integrated Slim Mouse Sensor

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PixArt Imaging Inc.