ADNS-3090 Datasheet, PDF (27/38 Pages) Pixart Imaging Inc. – High-Performance Optical Mouse Sensor

PixArt Imaging Inc.
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Pixel_Sum
Access: Read
Address: 0x06
Reset Value: 0x00
Bit
7
6
5
4
3
2
1
0
Field
AP₇
AP₆
AP₅
AP₄
AP₃
AP₂
AP₁
AP₀
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
Access: Read
Bit
7
Field
0
Address: 0x07
Reset Value: 0x00
6
5
4
3
2
1
0
0
MP₅
MP₄
MP₃
MP₂
MP₁
MP₀
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
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.
PixArt Imaging Inc.
E-mail: [e-mail]
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