14. Direct Memory Access Controller (DMAC)
Rev.1.00 Jan. 10, 2008 Page 707 of 1658
REJ09B0261-0100
CH1
>
CH2
>
CH3
>
CH4
>
CH5
>
CH0
CH0
>
CH1
>
CH2
>
CH3
>
CH4
>
CH5
CH2
>
CH3
>
CH4
>
CH5
>
CH0
>
CH1
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
CH0
>
CH1
>
CH2
>
CH3
>
CH4
>
CH5
(1) When channel 0 transfers
Initial priority order
Initial priority order
Initial priority order
Initial priority order
Priority order
after transfer
Priority order does not chan
g
e.
Channel 2 becomes bottom
priority.
The priority of channels 0 and 1,
which were hi
g
her 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
hi
g
her than channel 5, are also
shifted.
Channel 1 becomes bottom
priority.
The priority of channel 0, which
was hi
g
her than channel 1, is also
shifted.
Channel 0 becomes bottom
priority
Priority order
after transfer
Priority order
after transfer
Priority order
after transfer
Post-transfer priority order
when there is an
immediate transfer
request to channel 5 only
(2) When channel 1 transfers
(3) When channel 2 transfers
(4) When channel 5 transfers
Figure 14.2 Round-Robin Mode (Example of Channels 0 to 5)
Содержание SH7781
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Страница 272: ...8 Caches Rev 1 00 Jan 10 2008 Page 242 of 1658 REJ09B0261 0100 ...
Страница 376: ...10 Interrupt Controller INTC Rev 1 00 Jan 10 2008 Page 346 of 1658 REJ09B0261 0100 ...
Страница 694: ...13 PCI Controller PCIC Rev 1 00 Jan 10 2008 Page 664 of 1658 REJ09B0261 0100 ...
Страница 762: ...14 Direct Memory Access Controller DMAC Rev 1 00 Jan 10 2008 Page 732 of 1658 REJ09B0261 0100 ...
Страница 788: ...15 Clock Pulse Generator CPG Rev 1 00 Jan 10 2008 Page 758 of 1658 REJ09B0261 0100 ...
Страница 828: ...17 Power Down Mode Rev 1 00 Jan 10 2008 Page 798 of 1658 REJ09B0261 0100 ...
Страница 846: ...18 Timer Unit TMU Rev 1 00 Jan 10 2008 Page 816 of 1658 REJ09B0261 0100 ...
Страница 1292: ...24 Multimedia Card Interface MMCIF Rev 1 00 Jan 10 2008 Page 1262 of 1658 REJ09B0261 0100 ...
Страница 1326: ...25 Audio Codec Interface HAC Rev 1 00 Jan 10 2008 Page 1296 of 1658 REJ09B0261 0100 ...
Страница 1482: ...28 General Purpose I O Ports GPIO Rev 1 00 Jan 10 2008 Page 1452 of 1658 REJ09B0261 0100 ...
Страница 1538: ...30 User Debugging Interface H UDI Rev 1 00 Jan 10 2008 Page 1508 of 1658 REJ09B0261 0100 ...
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