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VV5404 Datasheet(PDF) 6 Page - STMicroelectronics

Part No. VV5404
Description  Mono and Colour Digital Video CMOS Image Sensors
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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VV5404 & VV6404
CD5404-6404F-A
6/54
2.
Operating Modes
2.1
Image Read-out Options
The output image format is CIF (352 x 288 pixel array). To provide the colour co-processor with the extra information
it needs for interpolation at the edges of the VV6404 pixel array, an optional border 2 pixels deep on all 4 sides of the
array can be enabled (Figure 4). The resulting image size of 356 x 292 pixels is the default power up state for this
camera module. The border option is programmable via the serial interface.
Image read-out is either non-interlaced raster scan, or ‘shuffled’ non-interlaced raster scan.
The shuffled raster scan order differs from a conventional raster in that the pixels of individual rows are re-ordered,
with the odd pixels within a row read-out first, followed by the even pixels.
This ‘shuffled’ read-out within a line, is useful in the VV6404 device as it groups pixels of the same colour (according
to the Bayer pattern - Figure 3) together, reducing cross talk between the colour channels.
NOTE: This option is on by default in both VV5404 and VV6404 sensors and is controllable via the serial interface.
2.2
Frame Rate Options
Two options: 30 fps or 25 fps (Assuming a 7.15909 MHz input clock and the default clock divider setting). The number
of video lines in for each frame rate is the same (304), the slower frame rate is implemented by extending the line
period from 393 pixel periods to 471 pixel periods. 30 fps is the default option, the frame rate is programmable via the
serial interface.
Border
Image size (column x row)
Disabled
352 x 288
Enabled
356 x 292
Default
Table 1 : Image Format Selection.
Frame Rate (fps)
Frame Timing (Pixels x Lines)
25
471 x 304
30
393 x 304
default
Table 2 : Frame Rate Selection
Blue
Green
Green
Red
Even
Columns
(0, 2, 4,...)
Odd
Columns
(1, 3, 5,...)
Even
Rows
(0, 2, 4,...)
Odd
Rows
(1, 3, 5,...)
Figure 3 : Bayer Colourisation Pattern. (VV6404 only)




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