PixArt Imaging Inc.
ADNS-3090 High-Performance Optical Mouse Sensor
Extended_Config
Address: 0x0b
Access: Read/Write
Reset Value: 0x00
Bit
7
6
5
4
3
2
1
0
Field
Busy
Reserved
Reserved
Reserved
Reserved
Serial_NPU
NAGC
Fixed_FR
Data Type: Bit field
USAGE: Register 0x0b allows the user to change the configuration of the sensor. Shown below are the bits, their default
values, and optional values.
Field Name
Description
Busy
Read-only bit. Indicates if it is safe to write to one or more of the following registers:
Frame_Period_Max_Bound_Upper and Lower
Frame_Period_Min_Bound_Upper and Lower
Shutter_Max_Bound_Upper and Lower
After writing to the Frame_Period_Max_Bound_Upper register, at least two frames must pass before
writing again to any of the above registers. This bit may be used in lieu of a timer since the actual frame
rate may not be known when running in auto mode.
0 = writing to the registers is allowed
1 = do not write to the registers yet
Serial_NPU
NAGC
Disable serial port pull-up current sources
0 = no, current sources are on
1 = yes, current sources are off
Disable AGC. Shutter will be set to the value in the Shutter_Max_Bound registers.
0 = no, AGC is active
1 = yes, AGC is disabled
Fixed_FR
Fixed frame rate (disable automatic frame rate control). When this bit is set, the frame rate will be
determined by the value in the Frame_Period_Max_Bound registers.
0 = automatic frame rate
1 = fixed frame rate
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PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw
29
PIXART [ PIXART IMAGING INC. ]
