•CAR (Current Address Register):
holds the 16-bit memory address used for the DMA transfer (one for each
channel), either incremented or decremented during the operation
•CWCR (Current Word Count
Register): Programs a channel for the number of bytes (up to 64K) transferred
during a DMA operation
•BA (Base Address) and WC (Word
Count): Used when auto-initialization is selected for a channel, to reload the
CAR and CWCR when DMA is complete.
•CR (Command Register): Programs
the operation of the controller
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