PAS005B Datasheet, PDF (28/41 Pages) Pixart Imaging Inc. – SXGA Color/Mono Digital CMOS Image Sensor

PixArt Imaging Inc.
PAS005B
CMOS Image Sensor IC
when
system clock 48M hz
pxclk
24M hz
exposure time
8/120 sec
Please keep L_P_F = 1027
And Calculate Ny = ? and Ne = ? ,








Application


System_clk
Np


2




















Pixel_clk(MHz)


24




Power frequency EX_time (x/120)
);

8


L_P_F
cov


1027




Register setting




frame_rate<10




CM
row_average
CDSx2
single_path
1






Wcw
Wrd
cf
rf








Key in Register






L_P_F
Ny
Ne
t_line
1027







&YQPTVSF
5JN
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/Z>

U@MJOF


/F
^

1YDML

2. t_line = (active_line_pixel + t_nov + 12) = 1300 + 480 + 12 = 1780 Pxclk
t_nov = 480 + Cov Pxclk
3. Ny = INT[(L_P_F+3) - (( EX_Time * Pxclk ) / t_line)]
131 = INT [(1027+3 ) - (( 8/120 * 24 M ) / 1780 )]
4.Ne = Res[(L_P_F + 3) - (( EX_Time * Pixel_clk ) / t_line)] * active_line_pixel
159 = Res[(1027 +3) - (( 8/120 *24 M ) / 1780 )] * 1300

5. Frame rate =
1
= 1/(1027+3)* 1780 = 13 (per/sec)
(LPF +1+ 2) ⋅t _ line
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PixArt Imaging Inc.
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