CHAPTER 6 DMA FUNCTIONS (DMA CONTROLLER)
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User’s Manual U14492EJ3V0UD
6.6
Transfer Types
6.6.1 Two-cycle transfer
In two-cycle transfer, data transfer is performed in two cycles, a read cycle (source to DMAC) and a write cycle
(DMAC to destination).
In the first cycle, the source address is output and reading is performed from the source to the DMAC. In the
second cycle, the destination address is output and writing is performed from the DMAC to the destination.
Caution
An idle cycle of 1 clock is always inserted between the read cycle and write cycle.
Содержание V850E/IA1 mPD703116
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