VS6724 datasheet(28/118 Pages) STMICROELECTRONICS

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Functional description

VS6724

28/118

When ViewLive is enabled the output data switches between

PipeContext0 and PipeContext

1 on each alternate frame.

Figure 12.

ViewLive frame output format

2.9

Output formats

2.9.1

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.

Interframe Blanking

Active Video

Pipe context0

Interline

Blanking

Interline

Blanking

Interframe Blanking

Active Video

Pipe context1

Frame output

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