CYIL1SE3000AA-GZDC Cypress Semiconductor Corp, CYIL1SE3000AA-GZDC Datasheet - Page 45

• Manufacturer Part Number: CYIL1SE3000AA-GZDC
• Description: IC IMAGE SENSOR 3MP 369-PGA
• Manufacturer: Cypress Semiconductor Corp

Specifications of CYIL1SE3000AA-GZDC

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Additional Features
Windowing
A fully configurable window can be selected for readout. The
parameters to configure this window are:
X_START: It is the start position for the X readout. Readout starts
only at odd kernel positions. As a result possible start positions
are 64 columns (two kernels) separated from each other.
X_kernels: The number of kernels to be readout.
Y_start: The starting line of the readout window.
Y_end: The end line of the readout window, granularity of 1.
For windowing, the effective readout time is smaller than in full
frame mode, because only the relevant part of the image array
is accessed. As a result, it is possible to achieve higher frame
rates.
Figure 34. Window Selected for Readout
Restrictions to Windowing
To ensure correct operation of the sensor the readout of partial
windows must be done with some restrictions.
■
Document Number: 001-44335 Rev. *C
The minimum window size is 4 kernels (128 pixels) in the X
direction and 1 line in the Y direction.
PRELIMINARY
■
■
This means that for a fixed ROT time, the window size can only
change in steps of 64 pixels. If the number of kernels to readout
is decreased with one and the ROT is already at the minimum
value, then the ROT time should be incread with one (clock
cycle) to compensate. The framerate remains unchanged by
this, but the data rate drops.
Sub Sampling
Not supported by LUPA 3000
Reverse Scan
Not supported by LUPA 3000
Multiple Windows
Not supported by LUPA 3000
Multiple Slopes
Dynamic range can be extended by the multiple (dual) slope
capability of the sensor. The four colored lines in
sents analog signals of the photodiode of four pixels, which
decreases as a result of exposure. The slope is determined by
the amount of light at each pixel (the more light, the steeper the
slope). When the pixels reach the saturation level, the analog
does not change despite further exposure. Without the multiple
slope capabilities, the pixels p3 and p4 are saturated before the
end of the exposure time, and no signal is received. However,
when using multiple slopes, the analog signal is reset to a
second reset level (lower than the original) before the integration
time ends. The analog signal starts decreasing with the same
slope as before, and pixels that were saturated before could be
nonsaturated at read out time. For pixels that never reach any of
the reset levels (for example, p1 and p2) there is no difference
between single and multiple slope operation.
By choosing the time stamps of the double slope resets (typical
at 90%, configurable by the user), it is possible to have a nonsat-
urated pixel value even for pixels that receive a huge amount of
light.
The reset levels are configured through external (power) pins.
In the X direction windowing can only start at an odd kernel
(kernel1, kernel3, …). Then number of kernels to readout is not
subject to an odd-even restriction.
The sum of the ROT_TIMER and the NB_OF_KERNELS spi
registers should always be an even number.
CYIL1SN3000AA
Figure 35
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