HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 463
![no-image](/images/no-image-200.jpg)
HD6412373R
Manufacturer Part Number
HD6412373R
Description
Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6412373R.pdf
(1208 pages)
- Current page: 463 of 1208
- Download datasheet (9Mb)
Block Transfer Mode (Cycle Steal Mode): Figure 8.17 shows an example of transfer when
ETEND output is enabled, and word-size, block transfer mode (cycle steal mode) is performed
from external 16-bit, 2-state access space to external 16-bit, 2-state access space.
One block is transferred in response to one transfer request, and after the transfer, the bus is
released. While the bus is released, one or more CPU, DMAC, or DTC bus cycles are initiated.
φ
Address bus
RD
HWR
LWR
ETEND
Figure 8.17 Example of Block Transfer Mode (Cycle Steal Mode) Transfer
Bus
release
DMA
read
DMA
write
Block transfer
DMA
read
DMA
write
release
Bus
Rev.7.00 Mar. 18, 2009 page 395 of 1136
DMA
Section 8 EXDMA Controller (EXDMAC)
read
Last block transfer
DMA
write
DMA
read
REJ09B0109-0700
DMA
write
Bus
release
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