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Hi,
I am trying to sample an 80 Mhz video signal from an ADC. Obviously, my 12 Mhz LPC can't handle this. Is there a way to slow it down to take a full frame at a time, and ignore the ones it can't grab.
My only other option is a Xilinx chip to buffer the data, and allow the LPC to fetch it from Xilinx as fast as it can.
I am using a TVP7000 to digitize RGB VGA, at a resolution up to 1280x1024.
I think what I will have to do is configure a CPLD to buffer the data, and the micro can sample the CPLD at a frame rate it can handle.
But what is your goal? A single-frame freeze or?
I need a video stream. Obviously not at a high frame rate, but usable.
No way are you going to pass anything resembling a usable video stream through a CPU running at 12 MHz.
1280x1024x(R8,G8,B8)@10fps is still more than 30 MBytes/s, and video at less than 10 frames per second is unusable.