VS6724 Datasheet, PDF (28/118 Pages) STMicroelectronics – 2 Megapixel single-chip camera module

Functional description
VS6724
When ViewLive is enabled the output data switches between PipeContext0 and PipeContext
1 on each alternate frame.
Figure 12. ViewLive frame output format
Frame output
Active Video
Pipe context0
Interline
Blanking
Interframe Blanking
Active Video
Pipe context1
Interline
Blanking
Interframe Blanking
2.9
2.9.1
Output formats
Image size
An output frame consists of a number of active lines and a number of interframe lines. Each
line consists of embedded line codes (if selected), active pixel data and interline blank data.
Note that by default the interline blanking data is not qualified by the PCLK and therefore is
not captured by the host system.
The image size can be either the full output from the sensor, depending on sensor mode, or
a scaled output, The output image size can be chosen from one of 9 pre-selected sizes or a
manual image size can be used.
The VS6724 supports the following data formats:
● JPEG (4:2:2, 4:2:0)
● YCbCr 4:2:2
● YCbCr 4:0:0
● RGB565
● RGB444 (encapsulated as 565)
● RGB444 (zero padded)
● Bayer 10-bit
● Bayer 8-bit
The required data format is selected using the bdataFomat control found in the pipe context
registers. The various options available for each format are controlled using the bRgbsetup
and bYCbCrSetup registers found in the Dither control registers.
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