Section 31 Multimedia Card Interface (MMCIF)
Rev. 1.00 Oct. 01, 2007 Page 1319 of 1956
REJ09B0256-0100
31.3.18 DMA Control Register (DMACR)
DMACR sets DMA request signal output. DMAEN enables or disables a DMA request signal.
The DMA request signal is output based on a value that has been set to SET[2:0].
This register should be set before a multiblock transfer command (CMD18 or CMD25) is
executed. Auto mode cannot be used for open-ended multiblock transfers.
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
R/W
R/W
R
R
R
R/W
R/W
R/W
Bit:
Initial value:
R/W:
DMAEN
AUTO
—
—
—
SET[2:0]
Bit Bit
Name
Initial
Value R/W Description
7
DMAEN
0
R/W
0: Disables output of DMA request signal.
1: Enables output of DMA request signal.
6
AUTO
0
R/W
Auto Mode for pre-define multiblock transfer using DMA
transfer. For details on auto mode operation, see
section 14, Direct Memory Access Controller (DMAC).
0: Disable auto mode
1: Enable auto mode
5 to 3
All
0
R
Reserved
These bits are always read as 0. The write value should
always be 0.
2 to 0
SET[2:0]
000
R/W
Sets DMA request signal assert condition.
000: Not output
001: Remaining data in FIFO is 1/4 or less of FIFO capacity.
010: Remaining data in FIFO is 1/2 or less of FIFO capacity.
011: Remaining data in FIFO is 3/4 or less of FIFO capacity.
100: Remaining data in FIFO is 1 byte or more.
101: Remaining data in FIFO is 1/4 or more of FIFO capacity.
110: Remaining data in FIFO is 1/2 or more of FIFO capacity.
111: Remaining data in FIFO is 3/4 or more of FIFO capacity.
Содержание SH7763
Страница 2: ...Rev 1 00 Oct 01 2007 Page ii of lxvi ...
Страница 122: ...Section 2 Programming Model Rev 1 00 Oct 01 2007 Page 56 of 1956 REJ09B0256 0100 ...
Страница 144: ...Section 3 Instruction Set Rev 1 00 Oct 01 2007 Page 78 of 1956 REJ09B0256 0100 ...
Страница 170: ...Section 4 Pipelining Rev 1 00 Oct 01 2007 Page 104 of 1956 REJ09B0256 0100 ...
Страница 282: ...Section 7 Caches Rev 1 00 Oct 01 2007 Page 216 of 1956 REJ09B0256 0100 ...
Страница 378: ...Section 9 Interrupt Controller INTC Rev 1 00 Oct 01 2007 Page 312 of 1956 REJ09B0256 0100 ...
Страница 514: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Oct 01 2007 Page 448 of 1956 REJ09B0256 0100 ...
Страница 630: ...Section 13 PCI Controller PCIC Rev 1 00 Oct 01 2007 Page 564 of 1956 REJ09B0256 0100 ...
Страница 686: ...Section 14 Direct Memory Access Controller DMAC Rev 1 00 Oct 01 2007 Page 620 of 1956 REJ09B0256 0100 ...
Страница 710: ...Section 16 Clock Pulse Generator CPG Rev 1 00 Oct 01 2007 Page 644 of 1956 REJ09B0256 0100 ...
Страница 732: ...Section 17 Watchdog Timer and Reset WDT Rev 1 00 Oct 01 2007 Page 666 of 1956 REJ09B0256 0100 ...
Страница 752: ...Section 18 Power Down Mode Rev 1 00 Oct 01 2007 Page 686 of 1956 REJ09B0256 0100 ...
Страница 772: ...Section 19 Timer Unit TMU Rev 1 00 Oct 01 2007 Page 706 of 1956 REJ09B0256 0100 ...
Страница 824: ...Section 21 Compare Match Timer CMT Rev 1 00 Oct 01 2007 Page 758 of 1956 REJ09B0256 0100 ...
Страница 1060: ...Section 23 Gigabit Ethernet Controller GETHER Rev 1 00 Oct 01 2007 Page 994 of 1956 REJ09B0256 0100 ...
Страница 1062: ...Section 24 IP Security Accelerator SECURITY Rev 1 00 Oct 01 2007 Page 996 of 1956 REJ09B0256 0100 ...
Страница 1124: ...Section 26 I 2 C Bus Interface IIC Rev 1 00 Oct 01 2007 Page 1058 of 1956 REJ09B0256 0100 ...
Страница 1184: ...Section 27 Serial Communication Interface with FIFO SCIF Rev 1 00 Oct 01 2007 Page 1118 of 1956 REJ09B0256 0100 ...
Страница 1350: ...Section 30 SIM Card Module SIM Rev 1 00 Oct 01 2007 Page 1284 of 1956 REJ09B0256 0100 ...
Страница 1484: ...Section 33 Audio Codec Interface HAC Rev 1 00 Oct 01 2007 Page 1418 of 1956 REJ09B0256 0100 ...
Страница 1560: ...Section 35 USB Host Controller USBH Rev 1 00 Oct 01 2007 Page 1494 of 1956 REJ09B0256 0100 ...
Страница 1720: ...Section 37 LCD Controller LCDC Rev 1 00 Oct 01 2007 Page 1654 of 1956 REJ09B0256 0100 ...
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Страница 2026: ...SH7763 Hardware Manual ...