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'[OT] VGA RGB REAL-TIME FRAME GRABBER'
|Philibert Perusse wrote:
It is possible, but there's zero margin for error. I would recommend
that you investigate Philips TDA8752. This puppy is perfect for your
application. It has three 8-bit A/D converters, phase locked loop, and
color control all integrated into one 100pin QFP. It's programmed via an
I2C interface (for which I of course controlled with a PIC in my
application). For the memory I would recommend good old-fashioned EDO
DRAM. It turns out that you can preselect the DRAM row address during
the Horizontal blank time and write a video row's worth of data without
having to change to another RAM address. You will need two banks of DRAM
with this approach (ping-ponging between writing one while reading the
other). A mid-range FPGA such as a Xilinx 3100 or perhaps one of the
Altera 7000 series parts is more than enough to control all of the
Get to work, you only have 9 weeks and 5 days left!
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