Why does my V-Series Avalon-MM DMA descriptor controller not use the new base address I programmed?

Description

When you update the RC Read Status, Descriptor Base, RC Write Status, and Descriptor Base addresses, the descriptor controller will not use the new address(es) until all the descriptors specified in RD/WR_TABLE_SIZE have been exhausted.

Resolution

To change the Descriptor Base address, all the descriptors specified in RD/WR_TABLE_SIZE must have been exhausted, or the table size must be updated.