Section 11 Direct Memory Access Controller (DMAC)
Rev. 2.00 Mar 09, 2006 page 475 of 906
REJ09B0292-0200
11.2.7
DMA Operation Register (DMAOR)
Bit:
31
30
29
…
11
10
9
8
—
—
—
…
—
—
—
—
Initial value:
0
0
0
…
0
0
0
0
R/W:
R
R
R
…
R
R
R
R
Bit:
7
6
5
4
3
2
1
0
—
—
—
—
PR
AE
NMIF
DME
Initial value:
0
0
0
0
0
0
0
0
R/W:
R
R
R
R
R/W
R/(W)
*
R/(W)
*
R/W
Note:
*
Only 0 can be written, to clear the flag.
The DMA operation register (DMAOR) is a 32-bit read/write register that controls the DMA
transfer mode. It also indicates the DMA transfer status. Only the lower four of the 32 bits are
valid. DMAOR is written as a 32-bit value, including the upper 28 bits. DMAOR is initialized to
H'00000000 by a reset and in standby mode. It retains its value when the module standby function
is used.
Bits 31 to 4—Reserved: These bits are always read as 0. The write value should always be 0.
Bit 3—Priority Mode Bit (PR): Specifies whether a fixed channel priority order or round-robin
mode is to be used there are simultaneous transfer requests for multiple channels. It is initialized to
0 by a reset and in standby mode. It retains its value when the module standby function is used.
Bit 3: PR
Description
0
Fixed priority (channel 0 > channel 1)
(Initial value)
1
Round-robin (Top priority shifts to bottom after each transfer. The
priority for the first DMA transfer after a reset is channel 1 > channel 0)
Содержание SH7616
Страница 10: ...Rev 2 00 Mar 09 2006 page x of xxvi ...
Страница 132: ...Section 2 CPU Rev 2 00 Mar 09 2006 page 106 of 906 REJ09B0292 0200 ...
Страница 568: ...Section 12 16 Bit Free Running Timer FRT Rev 2 00 Mar 09 2006 page 542 of 906 REJ09B0292 0200 ...
Страница 582: ...Section 13 Watchdog Timer WDT Rev 2 00 Mar 09 2006 page 556 of 906 REJ09B0292 0200 ...
Страница 662: ...Section 14 Serial Communication Interface with FIFO SCIF Rev 2 00 Mar 09 2006 page 636 of 906 REJ09B0292 0200 ...
Страница 706: ...Section 16 Serial I O SIO Rev 2 00 Mar 09 2006 page 680 of 906 REJ09B0292 0200 ...
Страница 820: ...Section 19 Pin Function Controller PFC Rev 2 00 Mar 09 2006 page 794 of 906 REJ09B0292 0200 ...
Страница 932: ...Appendix D Package Dimensions Rev 2 00 Mar 09 2006 page 906 of 906 REJ09B0292 0200 ...
Страница 935: ...SH7616 Hardware Manual ...