ADNB-6031-EV Avago Technologies US Inc., ADNB-6031-EV Datasheet - Page 24

• Manufacturer Part Number: ADNB-6031-EV
• Description: OPT SENS BUNDLE W/A-6030 RL CLIP
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNB-6031-EV

• Description/function: Laser Mouse Bundle
• Interface Type: SPI
• Product: Display Modules
• Touch Panel: No Touch Panel
• For Use With/related Products: ADNS-6030
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

SQUAL
Access: Read
Data Type
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 162. Since small changes in the current frame can result in changes in SQUAL,
variations in SQUAL when looking at a surface are expected. The graph below shows 800 sequentially acquired
SQUAL values, while a sensor was moved slowly over white paper. SQUAL is nearly equal to zero, if there is no
surface below the sensor. SQUAL is typically maximized when the navigation surface is at the optimum distance
from the imaging lens (the nominal Z-height).
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Figure 22. SQUAL Values at 800cpi (White Paper)
Figure 23. Mean SQUAL vs. Z (White Paper)
150
100
Field
150
100
50
50
Bit
0
1
1.6
51
101 151 201 251 301 351 401 451 501 551 601 651 701 751
SQ
7
1.8
: Upper 8 bits of a 9-bit unsigned integer.
7
Distance of Lens Reference Plane to Surface, Z (mm)
At Z=0mm, Circle@7.5" diameter, Speed-6ips
800dpi, Circle@7.5" diameter, Speed-6ips
2.0
Mean SQUAL vs. Z (White Paper)
SQ
SQUAL Value (White Paper)
6
6
2.2
Count
2.4
Address: 0x05
Reset Value: 0x00
SQ
5
5
2.6
SQ
2.8
4
4
3.0
SQ
3
3.2
3
SQ
2
2
Avg-3sigma
Avg+3sigma
Avg
SQ
1
1
SQ
0
0