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regarding edma in dm642 evaluation board

Started by mith...@yahoo.com December 9, 2005
Hi,
I am trying to set up a frame synchronised edma from video port to SDRAM. For the time being, i have to do it using a dsp initiated event. Acc to memory map, 0x80000000 to 0x9000000 is SDRAM. But when the destination address is anywhere between 0x80000000 and 0x80010000, the dma stops after 170 byte tranfer. The rest is tranfered incompletely. When we map any other destination from 0x80010000 to the rest of RAM, no problem with dma. Can anyone explain this strange behaviour?
thanks,
sk