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Section 13 Direct Memory Access Controller (DMAC)
Rev. 4.00 Sep. 14, 2005 Page 411 of 982
REJ09B0023-0400
Bit Bit
Name
Initial
Value R/W Descriptions
21 to 18
All
0
R
Reserved
These bits are always read as 0. The write value
should always be 0.
17 AM
0 R/W
Acknowledge
Mode
AM specifies whether
DACK
is output in data read
cycle or in data write cycle in dual address mode.
In single address mode,
DACK
is always output
regardless of the specification by this bit.
This bit is valid only in CHCR_0 and CHCR_1.This bit
is always read as 0 in CHCR_2 and CHCR_3. The
write value should always be 0.
0:
DACK
output in read cycle (Dual address mode)
1:
DACK
output in write cycle (Dual address mode)
16 AL
0 R/W
Acknowledge
Level
AL specifies the
DACK
(acknowledge) signal output is
high active or low active.
This bit is valid only in CHCR_0 and CHCR_1.This bit
is always read as 0 in CHCR_2 and CHCR_3. The
write value should always be 0.
0: Low-active output of
DACK
1: High-active output of
DACK
15
14
DM1
DM0
0
0
R/W
R/W
Destination Address Mode
DM1 and DM0 select whether the DMA destination
address is incremented, decremented, or left fixed. (In
single address mode, DM1 and DM0 bits are ignored
when data is transferred to an external device with
DACK
.)
00: Fixed destination address (Setting prohibited in 16-
byte transfer)
01: Destination address is incremented (+1 in 8-bit
transfer, +2 in 16-bit transfer, +4 in 32-bit transfer,
+16 in 16-byte transfer)
10: Destination 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)
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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Страница 1036: ...SH7641 Hardware Manual...