PixArt Imaging Inc.
ADBS-A350 Optical Finger Navigation
Minimum_Pixel
Access: Read
Address: 0x0a
Reset Value: Any
7
6
5
4
3
2
1
0
Bit
MP7
MP6
MP5
MP4
MP3
MP2
MP1
MP0
Field
Data Type: Eight-bit number.
USAGE: Minimum Pixel value in current frame. Minimum value = 0, maximum value = 254. The minimum pixel value can
vary with every frame.
Pixel_Grab
Access: Read/Write
Address: 0x0b
Reset Value: Any
7
6
5
4
3
2
1
0
Bit
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
Field
Data Type: Eight-bit word.
USAGE: For test purposes, the sensor will read out the contents of the pixel array, one pixel per frame. To start a pixel
grab, write anything to this register to reset the pointer to pixel 0,0. Then read the PIXRDY bit in the Motion
register. When the PIXRDY bit is set, there is valid data in this register to read out. After the data in this register
is read, the pointer will automatically increment to the next pixel. Reading may continue indefinitely; once a
complete frame’s worth of pixels has been read, PIXFIRST will be set to high to indicate the start of the first pixel
and the address pointer will start at the beginning location again. The pixel map address and corresponding
sensor orientation is shown below.
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PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw
32
PIXART [ PIXART IMAGING INC. ]
