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ARM DDI 0301H
ID012310
It uses the Prefetch Unit (PU) and the Load Store Unit (LSU) to schedule its accesses to the
TCMs.
DMA Interface
The DMA Interface is a bidirectional interface that services the DMA subsystem for writing and
reading the TCMs. Although the DMA Interface is bidirectional, it is able to produce a stream
of successive accesses that are in the same direction, followed by either an extra stream in the
same direction, or a stream in the opposite direction. Correspondingly the direction turnaround
is not significantly optimized.
The size of the transfer is given in the parameters of the transfer in the CP15 registers. The
transfers are always aligned with the size of the transfer as indicated by the CP15 registers.
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Level Two Interface
8-5
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