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Renu,
I am moving your thread to the DM64x device forum, as it appears that you are asking about how to set up a raw DMA transfer rather than how to use the EDMA3 Low Level Driver. If you want more information about EMDA3, you can check out the Wiki page located at:
http://processors.wiki.ti.com/index.php/Programming_the_EDMA3_using_the_Low-Level_Driver_%28LLD%29
Renu,
If you are looking for programming raw DMA transfer you can refer to the following wiki page
http://processors.wiki.ti.com/index.php/Programming_EDMA_without_EDMA3LLD_package