PixArt Imaging Inc.
Low Power LED Integrated Slim Mouse Sensor
SQUAL
Address: 0x05
Reset Value: Undefined
Access: Read
Bit
7
6
5
4
3
2
1
0
Field
SQ7
SQ6
SQ5
SQ4
SQ3
SQ2
SQ1
SQ0
Data Type:
USAGE:
Upper 8 bits of a 9-bit unsigned integer
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 167. Since small changes in the current frame can result
in changes in SQUAL, variations in SQUAL when looking at a surface are expected.
Shutter_Upper
Address: 0x06
Access: Read
Reset Value: Undefined
Bit
Field
7
6
5
4
3
2
1
0
S15
S14
S13
S12
S11
S10
S9
S8
Shutter_Lower
Access: Read
Address: 0x07
Reset Value: Undefined
Bit
Field
7
6
5
4
3
2
1
0
S7
S6
S5
S4
S3
S2
S1
S0
Data Type:
USAGE:
Sixteen bit unsigned integer
Units are clock cycles. Read Shutter_Upper first, then Shutter_Lower. They should be read consecu-
tively. The shutter is adjusted to keep the average and maximum pixel values within normal operating
ranges. The shutter value is automatically adjusted.
Maximum_Pixel
Address: 0x08
Access: Read
Reset Value: Undefined
Bit
7
6
5
4
3
2
1
0
Field
MP7
MP6
MP5
MP4
MP3
MP2
MP1
MP0
Data Type:
USAGE:
Eight-bit number
Maximum Pixel value in current frame. Minimum value = 0, maximum value = 254. The maximum pixel
value can vary with every frame.
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PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw
19
PIXART [ PIXART IMAGING INC. ]
