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Section 13 Direct Memory Access Controller (DMAC)
Rev. 4.00 Sep. 14, 2005 Page 410 of 982
REJ09B0023-0400
13.3.4
DMA Channel Control Registers (CHCR)
DMA channel control registers (CHCR) are 32-bit read/write registers that control the DMA
transfer mode. The CHCR is initialized to H'00000000 at reset and retains the current value in the
standby or module standby mode.
Bit Bit
Name
Initial
Value R/W Descriptions
31
TC
0
R/W
Transfer Count Mode
This bit selects whether it transmits once by one
transfer request or transmits the number of setting
times of DMATCR by one transfer request. This bit is
effective only when transfer request original is MTU0 to
MTU4, and CMT0 and CMT1 at an On-chip peripheral
module request. Other than this, please specify 0 to be
this bit then.
0: It transmits once by one transfer request.
1: It transmits the number of setting times of DMATCR
by one transfer request.
30 to 24
All
0
R
Reserved
These bits are always read as 0. The write value
should always be 0.
23 DO
0 R/W
DMA
Overrun
This bit selects whether
DREQ
is detected by overrun
0 or by overrun 1. This bit is valid only in CHCR_0 and
CHCR_1.This bit is always read as 0 in CHCR_1 and
CHCR_3. The write value should always be 0.
0: Detects
DREQ
by overrun 0
1: Detects
DREQ
by overrun 1
22
TL
0
R/W
Transfer End Level
This bit specifies the
TEND
signal output is high active
or low active. This bit is valid only in CHCR_0.This bit
is always read as 0 in CHCR_1 and CHCR_3. The
write value should always be 0.
0: Low-active output of
TEND
1: High-active output of
TEND
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...
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