CYIL1SM0300AA CYPRESS [Cypress Semiconductor], CYIL1SM0300AA Datasheet - Page 10

• Manufacturer Part Number: CYIL1SM0300AA
• Description: LUPA-300 CMOS Image Sensor
• Manufacturer: CYPRESS [Cypress Semiconductor]

Document Number: 001-00371 Rev. *D
Frame Rate and Windowing
Frame Rate
The frame rate depends on the input clock, the Frame
Overhead Time (FOT) and the Row Overhead Time (ROT).
The frame period can be calculated as follows
Frame period = FOT + Nr. Lines * (ROT + Nr. Pixels * clock period)
Table 6. Frame Rate Parameters
Example: read out of the full resolution at nominal speed (80
MHz pixel rate = 12.5 ns, GRAN<1:0>=10):
Frame period = 7.8 µs + (480 * (400 ns + 12.5 ns * 640) = 4.039
ms => 247.6 fps.
In case the sensor operates in subsampling, the ROT is
enlarged with 8 clock periods.
FOT
ROT
Nr. Lines
Nr. Pixels
clock period
Parameter
Reset
Frame Overhead Time
Row Overhead Time
Number of Lines read out each frame
Number of pixels read out each line.
1/80 MHz = 12.5 ns.
Vpix
Figure 4. 6T-Pixel Architecture.
Comment
Sample
Windowing
Windowing can easily be achieved by the SPI interface. The
starting point of the x- and y-address is uploadable, as well as
the window size. The minimum step size in the x-direction is 8
pixels (only multiples of 8 can be chosen as start/stop
addresses). The minimum step size in the y-direction is 1 line
every line can be addressed) in normal mode and 2 lines in
sub sampling mode.
The window size in the x-direction is uploadable in register
NB_OF_PIX, the window size in the y-direction is determined
Vmem
1200 clock periods for GRAN<1:0> = 11
624 clock periods for GRAN<1:0> = 10
336 clock periods for GRAN<1:0> = 01
192 clock periods for GRAN<1:0> = 00
48 clock periods for GRAN<1:0> = 11
32 clock periods for GRAN<1:0> = 10
24 clock periods for GRAN<1:0> = 01
20 clock periods for GRAN<1:0> = 00
Select
Clarification
CYIL1SM0300AA
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