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Section 13 Direct Memory Access Controller (DMAC)
Rev. 4.00 Sep. 14, 2005 Page 413 of 982
REJ09B0023-0400
Bit Bit
Name
Initial
Value R/W Descriptions
7
6
DL
DS
0
0
R/W
R/W
DREQ
Level and
DREQ
Edge Select
These bits specify the sampling method of the
DREQ
pin input and the sampling level.
These bits are valid only in CHCR_0 and CHCR_1.
These bits are always read as 0 in CHCR_2 and
CHCR_3. The write value should always be 0.
In channels 0 and 1, also, if the transfer request source
is specified as an on-chip peripheral module or if an
auto-request is specified, the specification by this bit is
ignored.
00:
DREQ
detected in low level
01:
DREQ
detected at falling edge
10:
DREQ
detected in high level
11:
DREQ
detected at rising edge
5 TB
0 R/W
Transfer
Bus
Mode
This bit specifies the bus mode when DMA transfers
data.
0: Cycle steal mode (Initial Value)
1: Burst mode
Set this bit to 0 when the on-chip peripheral module is
requesting DMA transfer, the setting for the transfer
count mode bit is 0, and the source of the transfer
request is the MTU.
4
3
TS1
TS0
0
0
R/W
R/W
Transmit Size
TS1 and TS0 specify the size of data to be transferred.
Select the size of data to be transferred when the
source or destination is an on-chip peripheral module
register of which transfer size is specified.
00: Byte size
01: Word size (two bytes)
10: Longword size (four bytes)
11: 16-byte unit (four longword transfers)
Содержание HD6417641
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Страница 11: ...Rev 4 00 Sep 14 2005 Page xi of l USB Universal serial bus WDT Watch dog timer...
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Страница 204: ...Section 4 Clock Pulse Generator CPG Rev 4 00 Sep 14 2005 Page 154 of 982 REJ09B0023 0400...
Страница 212: ...Section 5 Watchdog Timer WDT Rev 4 00 Sep 14 2005 Page 162 of 982 REJ09B0023 0400...
Страница 228: ...Section 6 Power Down Modes Rev 4 00 Sep 14 2005 Page 178 of 982 REJ09B0023 0400...
Страница 246: ...Section 8 X Y Memory Rev 4 00 Sep 14 2005 Page 196 of 982 REJ09B0023 0400...
Страница 318: ...Section 11 User Break Controller UBC Rev 4 00 Sep 14 2005 Page 268 of 982 REJ09B0023 0400...
Страница 454: ...Section 12 Bus State Controller BSC Rev 4 00 Sep 14 2005 Page 404 of 982 REJ09B0023 0400...
Страница 500: ...Section 13 Direct Memory Access Controller DMAC Rev 4 00 Sep 14 2005 Page 450 of 982 REJ09B0023 0400...
Страница 504: ...Section 14 U Memory Rev 4 00 Sep 14 2005 Page 454 of 982 REJ09B0023 0400...
Страница 566: ...Section 17 Compare Match Timer CMT Rev 4 00 Sep 14 2005 Page 516 of 982 REJ09B0023 0400...
Страница 734: ...Section 18 Multi Function Timer Pulse Unit MTU Rev 4 00 Sep 14 2005 Page 684 of 982 REJ09B0023 0400...
Страница 868: ...Section 21 A D Converter Rev 4 00 Sep 14 2005 Page 818 of 982 REJ09B0023 0400...
Страница 914: ...Section 23 I O Ports Rev 4 00 Sep 14 2005 Page 864 of 982 REJ09B0023 0400...
Страница 956: ...Section 24 List of Registers Rev 4 00 Sep 14 2005 Page 906 of 982 REJ09B0023 0400...
Страница 1016: ...Section 25 Electrical Characteristics Rev 4 00 Sep 14 2005 Page 966 of 982 REJ09B0023 0400...
Страница 1024: ...Appendix Rev 4 00 Sep 14 2005 Page 974 of 982 REJ09B0023 0400...
Страница 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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