Frame Rate Conversion - VIP Suite

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My question is : do I have to use DDR2 memory to perform frame rate conversion, or is it possible to use an other kind of memory?

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As I briefly mentioned in an earlier post you can use any kind of memory as long as it has sufficient usable bandwidth and capacity. As the frame buffer accesses the memory over an Avalon MM port, the frame buffer is independent of the memory type. Any memory controller that presents an Avalon MM slave port should work.