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Section 13 Direct Memory Access Controller (DMAC)
Rev. 4.00 Sep. 14, 2005 Page 429 of 982
REJ09B0023-0400
CHCR DMARS
RS[3:0] MID
RID
DMA
Transfer
Request
Source
DMA Transfer
Request Signal
Source
Desti-
nation Bus
Mode
1000
101010
00
MTU0
TGI0A
(input capture interrupt/
compare match interrupt)
Any Any Burst/
cycle steal
110000
00
MTU1 TGI1A
(input capture interrupt/
compare match interrupt)
Any Any Burst/
cycle steal
110010
00
MTU2 TGI2A
(input capture interrupt/
compare match interrupt)
Any Any Burst/
cycle steal
110100
00
MTU3 TGI3A
(input capture interrupt/
compare match interrupt)
Any Any Burst/
cycle steal
111010
00
MTU4 TGI4A
(input capture interrupt/
compare match interrupt)
Any Any Burst/
cycle steal
101000 00
USB transmitter EP2FIFO empty transfer
request
Any USBEPDR2
Cycle
steal
01
USB
receiver
EP1FIFO full transfer
request
USBEPDR1 Any Cycle
steal
101100 00
A/D converter 1 ADI (A/D conversion
end interrupt)
ADDR1 Any
Cycle
steal
111100 00 CMT1
Compare-match
transfer
request
Any Any Burst/
cycle steal
13.4.3 Channel
Priority
When the DMAC receives simultaneous transfer requests on two or more channels, it selects a
channel according to a predetermined priority order. The four modes (fixed mode 1, fixed mode 2,
channel selective round-robin mode, and all-channel round-robin mode) are selected using the
priority bits PR0, PR1, and RC0 to RC3 in the DMA operation register (DMAOR).
Fixed Mode: In these modes, the priority levels among the channels remain fixed. There are two
kinds of fixed modes as follows:
Fixed mode 1: CH0 > CH1 > CH2 > CH3
Fixed mode 2: CH0 > CH2 > CH3 > CH1
Summary of Contents for HD6417641
Page 2: ...Rev 4 00 Sep 14 2005 Page ii of l...
Page 7: ...Rev 4 00 Sep 14 2005 Page vii of l...
Page 11: ...Rev 4 00 Sep 14 2005 Page xi of l USB Universal serial bus WDT Watch dog timer...
Page 12: ...Rev 4 00 Sep 14 2005 Page xii of l...
Page 28: ...Rev 4 00 Sep 14 2005 Page xxviii of l...
Page 204: ...Section 4 Clock Pulse Generator CPG Rev 4 00 Sep 14 2005 Page 154 of 982 REJ09B0023 0400...
Page 212: ...Section 5 Watchdog Timer WDT Rev 4 00 Sep 14 2005 Page 162 of 982 REJ09B0023 0400...
Page 228: ...Section 6 Power Down Modes Rev 4 00 Sep 14 2005 Page 178 of 982 REJ09B0023 0400...
Page 246: ...Section 8 X Y Memory Rev 4 00 Sep 14 2005 Page 196 of 982 REJ09B0023 0400...
Page 318: ...Section 11 User Break Controller UBC Rev 4 00 Sep 14 2005 Page 268 of 982 REJ09B0023 0400...
Page 454: ...Section 12 Bus State Controller BSC Rev 4 00 Sep 14 2005 Page 404 of 982 REJ09B0023 0400...
Page 504: ...Section 14 U Memory Rev 4 00 Sep 14 2005 Page 454 of 982 REJ09B0023 0400...
Page 566: ...Section 17 Compare Match Timer CMT Rev 4 00 Sep 14 2005 Page 516 of 982 REJ09B0023 0400...
Page 868: ...Section 21 A D Converter Rev 4 00 Sep 14 2005 Page 818 of 982 REJ09B0023 0400...
Page 914: ...Section 23 I O Ports Rev 4 00 Sep 14 2005 Page 864 of 982 REJ09B0023 0400...
Page 956: ...Section 24 List of Registers Rev 4 00 Sep 14 2005 Page 906 of 982 REJ09B0023 0400...
Page 1016: ...Section 25 Electrical Characteristics Rev 4 00 Sep 14 2005 Page 966 of 982 REJ09B0023 0400...
Page 1024: ...Appendix Rev 4 00 Sep 14 2005 Page 974 of 982 REJ09B0023 0400...
Page 1032: ...Rev 4 00 Sep 14 2005 Page 982 of 982 REJ09B0023 0400 X X Y data addressing 52 X Y memory 193...
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