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Slave (normal) Direct Memory Access

 
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thedark
Second Lieutenant


Joined: 30 Jul 2005
Posts: 1074

PostPosted: Thu Aug 04, 2005 5:34 pm    Post subject: Slave (normal) Direct Memory Access Reply with quote
Pro: Frees up the CPU during the actual data transfer.

Con: Checking boundary conditions, allocating contiguous buffers, and programming the DMA registers makes it the slowest of all techniques. It also uses up a scarce DMA channel, and requires aligned low memory buffers.
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