27

Pixel_Sum

Address: 0x06

Access: Read

Reset Value: 0x00

Bit

7

6

5

4

3

2

1

0

Field

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 byte of a 16-bit counter which sums

all 900 pixels in the current frame. It may be described as the full sum divided by 256. To find the average pixel value,

use the following formula:

Average Pixel = Register Value * 256 / 900 = Register Value/3.51

The maximum register value is 221 (63 * 900/256 truncated to an integer). The minimum is 0. The pixel sum value

can change on every frame.

Maximum_Pixel

Address: 0x07

Access: Read

Reset Value: 0x00

Bit

76

5

4

3210

Field

0

0

Data Type: Six bit number.

USAGE: Maximum Pixel value in current frame. Minimum value = 0, maximum value = 63. The maximum pixel value

can vary with every frame.

Reserved

Address: 0x08

Reserved

Address: 0x09

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PixArt Imaging Inc.

PixArt Imaging Inc.