Data Translation DT3153, User Manual

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Principles of Operation
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An interrupt is generated when an even or odd frame has been
acquired; the PCI bus assigns the interrupt to the board automatically
when it is installed.
The speed of the PCI bus allows the DT3153 to transfer an unlimited
number of consecutive frames across the bus in real time. You can
acquire consecutive images, up to the capacity of available system
RAM.
Acting as a PCI bus master, the board sends pixel data over the PCI
bus directly using burst transfer rates up to 30 frames/s for 60 Hz
image formats and 25 frames/s for 50 Hz image formats, when used
with a 16-bit or 32-bit color display adapter board that supports DDI.
WARNING!
If you are acquiring to host memory and change either the image format
or the image type, you must ensure that the buffer is large enough to
hold the acquired data. Failure to do so results in invalid frame
messages when you acquire the image.