ADNS-2220 Avago Technologies US Inc., ADNS-2220 Datasheet - Page 26

• Manufacturer Part Number: ADNS-2220
• Description: SOLID STATE OPTICAL MOUSE LENS
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNS-2220

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: Q2072083A

Pixel_Sum
Access: Read
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
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
Reserved
26
Field
Field
Bit
Bit
AP
7
0
7
7
AP
6
0
6
6
MP
AP
5
5
Address: 0x06
Reset Value: 0x00
Address: 0x07
Reset Value: 0x00
Address: 0x08
Address: 0x09
5
5
MP
AP
4
4
4
4
MP
AP
3
3
3
3
AP
MP
2
2
2
2
AP
MP
1
1
1
1
AP
MP
0
0
0
0