Analog Devices ADSP-BF535 Blackfin, Hardware Reference Manual

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ADSP-BF535 Blackfin Processor Hardware Reference G-7
direct-mapped.
Cache architecture where each line has only one place that it can appear in
the cache. Also described as 1-Way associative.
Direct Memory Access (DMA).
A way of moving data between system devices and memory in which the
data are transferred through a DMA port without involving the processor
(see
PIO ).
dirty, modified.
A state bit, stored along with the tag, indicating whether the data in the
data cache line has been changed since it was copied from the source
memory and, therefore, needs to be updated in that source memory.
DMA.
See Direct Memory Access
DMA Access Bus (DAB).
A peripheral bus that allows DMA capable peripherals to gain access to
memory.
DMA chaining.
The linking or chaining of multiple DMA sequences. In chained DMA,
the I/O processor loads the next DMA descriptor into the DMA parame-
ter registers when the current DMA finishes and autoinitializes the next
DMA sequence.
DMA descriptor registers.
Registers that hold the setup information for a DMA process.