VV5300 查看數據表（PDF） - Vision

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产品描述 (功能)

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VV5300

Integrated CMOS Image Sensor with on-chip ADC.(Sensor)

Vision 

VV5300 Sensor

Line Level Formatting

Each line type (black, blank, visible) has a specific format associated with it independent of the data output

format selected. Each line begins with a start sequence of FFH FFH 00H followed by XYH where XYH indicates

the line type. The next two bytes provide supplementary data (specifically the line number within the current

frame). Following this data are two guaranteed blank bytes (07 H 07Hfor 8 bit modes, 01H01H for 4 bit modes).

If the border lines/pixels have been enabled the next 2 bytes will be visible pixels otherwise they shall appear

as blank bytes. The next part of the line is reserved for the 160 visible pixels. The 4 bytes following the visible

pixels are formatted in the same way as the 4 bytes preceeding the 160 visible pixels. At the end of each line,

an end of line sequence is produced, (FFH FFH 00H 80H). If the line is within the visible part of the frame,

(lines 11 to 134 if the border lines are enabled otherwise lines 13 to 132), the end of line sequence is

immediately followed by 2 bytes containing the mean values for the central 128 pixels. The first byte contains

the mean value for the first 64 pixels of the middle 128 pixels and the second byte contains the mean value

for the latter 64 pixels of the middle 128 pixels. The 128 pixels comprise the standard 120 visible pixels, the

4 border pixels and an extra 4 border pixels that are never enabled as visible pixels but are used for exposure

control and hence contribute to the mean pixel value for the line. If the line type is not visible then the two

bytes following the end of line sequence will contain 07H 07H. For the remainder of the interline period the

data output is always FFH.

Sensor status and configuration information is output during the frame start line, (line 0), each data byte is

separated by a blank value (07H) to avoid possible false line start conditions being generated. The

information output during the status line reflects, if the sensor is operating in 8bit ADC mode, the first 64

locations in the serial interface register map. If the sensor is operating in 4 bit mode less data can be output

during the status line. All the serial interface registers are 8bit values therefore 2, 4bit pixel periods are

required to output a single serial interface location. Note that the serial interface data is only output during

the visible monochrome pixels of the status line. This allows for one quarter of the serial interface address

space to be output during any status line. It is possible to select the remaining registers in the serial interface

for output, (see serial interface register setup 2, bits 7:6).

The “end of frame” line, it is actually 2 lines prior to the status line will output the 4 exposure control bin

averages during the first 4, (or 8 if operating in 4bit modes), monochrome pixels. Again the data is separated

by mode dependent padding data.

cd34011-b.fm

17/10/97

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