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CHAPTER 16 DMA CONTROLLER (DMAC)
■ Step/Block Transfer 2-Cycle Transfer Fly-by Transfer
This transfer has the same features as those of a 2-cycle transfer except that the transfer area
can only be external areas, and the transfer unit is read (memory → I/O) or write (I/O → memory)
only.
Table 16.3-6 shows the specifiable transfer addresses.
Table 16.3-6 Specifiable Transfer Addresses (for Step/Block Transfer 2-Cycle Transfer Fly-
Transfer source addressing
Specification not required (invalid)
350
by Transfer)
Direction
Transfer destination addressing
None
External area
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