M-V850E-IA4 Renesas Electronics America, M-V850E-IA4 Datasheet - Page 663

• Manufacturer Part Number: M-V850E-IA4
• Description: KIT EVAL V850E IA4 UPD70F3186
• Manufacturer: Renesas Electronics America

Specifications of M-V850E-IA4

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

16.4.3 Block transfer mode
bus until a terminal count occurs. No other DMA requests are acknowledged during block transfer.
2 and 3 are in the block transfer mode.
(internal signal)
(internal signal)
In the block transfer mode, once transfer starts, the DMAC continues the transfer operation without releasing the
After the block transfer ends and the DMAC releases the bus, another DMA transfer can be acknowledged.
The following shows an example of block transfer in which a higher priority DMA request is issued. DMA channels
DMARQ2
DMARQ3
CPU CPU CPU DMA3 DMA3 DMA3 DMA3 DMA3 DMA3 DMA3 DMA3 CPU DMA2 DMA2 DMA2 DMA2 DMA2
CHAPTER 16 DMA FUNCTIONS (DMA CONTROLLER)
Figure 16-7. Block Transfer Example
User’s Manual U16543EJ4V0UD
DMA channel 3 terminal count
The bus is always
released.
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