24

Pixel_Sum

Address: 0x0a

Access: Read

Reset Value: 0x80

Data Type: High 8 bits of an unsigned 16-bit integer.

USAGE: This register is used to find the average pixel value. It reports the upper eight bits of a 18-bit counter, which

sums all pixels in the current frame. It may be described as the full sum divided by 1024. To find the average pixel

value, use the following formula:

Average Pixel = Register Value * 1024/676 = Register Value * 1.515

The maximum register value is 167. The minimum is 0. The pixel sum value can change on every frame.

Bit

7

6

5

4

3

2

1

0

Field

Bit

76

5

4

3210

Field

Maximum_Pixel

Address: 0x09

Access: Read

Reset Value: 0xd0

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.

Minimum_Pixel

Address: 0x0b

Access: Read

Reset Value: 0x00

Data Type: Eight-bit number.

USAGE:Minimum Pixel value in current frame. Minimum value = 0, maximum value = 254. The minimum pixel value

can vary with every frame.

Bit

7

6

5

4

3

2

1

0

Field

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PixArt Imaging Inc.

PixArt Imaging Inc.

ADNS-7550 Integrated Molded Lead-Frame DIP Sensor