PixArt Imaging Inc.
PAS005B
CMOS Image Sensor IC
EXAMPLE_4: Sunlight mode Exposure time setting
MEGA setting
when
system clock 48M hz
pxclk
12M hz
< one line pxclk (sec)
exposure time
Please keep L_P_F = 1027
And Calculate Ny = ? and Ne = ? ,
Application
System_clk
48
Np
4
Pixel_clk(MHz)
12
Power frequency EX_time (x/120)
60HZ
X_t
cov
0
L_P_F
1027
Register setting
CM
1
row_average
CDSx2
single_path
0
1
0
Wcw
1287
Wrd
1027
Cf
0
rf
0
Key in Register
L_P_F
Ny
1029
Ne<1300
X_Ne
t_line
1780
1027
1. ExposureTim (X_t)=[1030– Ne(X_Ne)]/Pxclk (sec)
1
2. Frame rate =
= 1 / (1027+3) * 1780 = 13
(LPF +1+ 2)⋅t _ line
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