PixArt Imaging Inc.
PAS005B
CMOS Image Sensor IC
linetime= 480+4(x)+4(D)+322+4(x)= 848pixclks
Hsync.
480pixclks
x x x
x x x x
322pixels0ut x x x x
x x x x
D D D D
322pixelsout
x
D D D D
Note:"x"indicatesdon'tcarePXD[9:0],"D"dark.
Pixclk_a
Fig .4.3.5.2-1. Inter-line timing (default)
linetime= cov[10:0]+480+4(x)+4(D)+322+4(x) pixclks
Hsync.
cov[10:0]
+480
x x x
x x x x
322pixels0ut x x x x
x x x x
D D D D
322pixelsout
x
D D D D
Note:"x"indicatesdon'tcarePXD[9:0],"D"indicatesdark.
Pixclk_a
Fig 4.3.5.2-2 Inter-line timing (programmable)
Frametime(min)(=242lines)
Vsync.
Hsync.
480
Pixclks
480
Pixclks
Dark
Dark
Dark
Dark
B,G,B,G...
G,R,G,R...
B,G,B,G...
Validframedata(242lines)
Fig 4.3.5.2-3 Inter-frame timing (default)
Frametime=lpf[14:0]+3lines
Vsync.
Hsync.
Pixclks
1
Dark
1
Dark
0
Dark
0
Dark
Validframedata
(242lines)
Validframedata
(242lines)
Fig .4.3.5.2-4 Inter-frame timing (programmable)
4.4 Snapshot mode
Typically, the snapshot mode must work with the aid of an external mechnical shutter. PAS005 support two
types of snapshot mode to fit the different exposure time request.
Snapshot mode 1: register seq_exp=1
When the exposure time is longer than the mechanical shutter speed limitation, snapshot mode 1 is chosen.
The exposure period is now controlled by the mechanisms of shutter opening and close as shown in Fig. 4.
The mechanical shutter can be trigger by the clock edge of output signal Vsync and all pixels will be exposure
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PixArt Imaging Inc.
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