r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 737
r8a77850anbg
Manufacturer Part Number
r8a77850anbg
Description
Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R8A77850ANBG.pdf
(1692 pages)
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(1) When channel 0 transfers
(2) When channel 1 transfers
(3) When channel 2 transfers
(4) When channel 5 transfers
Initial priority order
Priority order
after transfer
Initial priority order
Priority order
after transfer
Initial priority order
Priority order
after transfer
Post-transfer priority order
when there is an
immediate transfer
request to channel 5 only
Initial priority order
Priority order
after transfer
Figure 14.2 Round-Robin Mode (Example of Channels 0 to 5)
CH0 > CH1 > CH2 > CH3 > CH4 > CH5
CH0 > CH1 > CH2 > CH3 > CH4 > CH5
CH0 > CH1 > CH2 > CH3 > CH4 > CH5
CH0 > CH1 > CH2 > CH3 > CH4 > CH5
CH0 > CH1 > CH2 > CH3 > CH4 > CH5
CH3 > CH4 > CH5 > CH0 > CH1 > CH2
CH2 > CH3 > CH4 > CH5 > CH0 > CH1
CH1 > CH2 > CH3 > CH4 > CH5 > CH0
CH0 > CH1 > CH2 > CH3 > CH4 > CH5
14. Direct Memory Access Controller (DMAC)
Rev.1.00 Jan. 10, 2008 Page 707 of 1658
Channel 0 becomes bottom
priority
Channel 1 becomes bottom
priority.
The priority of channel 0, which
was higher than channel 1, is also
shifted.
Channel 2 becomes bottom
priority.
The priority of channels 0 and 1,
which were higher than channel 2,
are also shifted. If immediately
after there is a request to transfer
channel 5 only, channel 5 becomes
bottom priority and the priority of
channels 3 and 4, which were
higher than channel 5, are also
shifted.
Priority order does not change.
REJ09B0261-0100
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