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Section 13 Direct Memory Access Controller (DMAC)
Rev. 4.00 Sep. 14, 2005 Page 412 of 982
REJ09B0023-0400
Bit Bit
Name
Initial
Value R/W Descriptions
13
12
SM1
SM0
0
0
R/W
R/W
Source Address Mode
SM1 and SM0 select whether the DMA source address
is incremented, decremented, or left fixed. (In single
address mode, SM1 and SM0 bits are ignored when
data is transferred from an external device with
DACK
.)
00: Fixed source address (Setting prohibited in 16-byte
transfer)
01: Source address is incremented (+1 in 8-bit transfer,
+2 in 16-bit transfer, +4 in 32-bit transfer, +16 in
16-byte transfer)
10: Source address is decremented (–1 in 8-bit
transfer, –2 in 16-bit transfer, –4 in 32-bit transfer;
illegal setting in 16-byte transfer)
11: Reserved (Setting prohibited)
Resource Select
RS3 to RS0 specify which transfer requests will be
sent to the DMAC. The changing of transfer request
source should be done in the state that DMA enable bit
(DE) is set to 0.
0
0
0 0
External request, dual address mode
0 0 0 1 Reserved
(Setting
prohibited)
0
0
1 0
External request/Single address mode
External address space
→
external device with
DACK
0
0
1 1
External request/Single address mode
External device with
DACK
→
external address space
0 1 0 0 Auto
request
0 1 0 1 Reserved
(Setting
prohibited)
0 1 1 0 Reserved
(Setting
prohibited)
0 1 1 1 Reserved
(Setting
prohibited)
1 0 0 0 DMA
expansion
request
module selection specification
1 0 0 1 Reserved
(Setting
prohibited)
1 0 1 0 Reserved
(Setting
prohibited)
1 0 1 1 Reserved
(Setting
prohibited)
1 1 0 0 Reserved
(Setting
prohibited)
1 1 0 1 Reserved
(Setting
prohibited)
1 1 1 0 A/D
converter
0
11
10
9
8
RS3
RS2
RS1
RS0
0
0
0
0
R/W
R/W
R/W
R/W
1 1 1 1 CMT0
Note: External request specification is valid only in
CHCR_0 and CHCR_1. None of the request
sources can be selected in channels CHCR_2
and CHCR_3.
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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Page 1036: ...SH7641 Hardware Manual...