S5PC100 USER’S MANUAL (REV1.0)
DMA CONTROLLER
6.1-29
Interrupts
The DMAC provides the
irq
signals to use as active-high level-sensitive interrupts to external CPUs. If you
program the
Interrupt Enable Register
to generate an interrupt, after the DMAC executes
DMASEV
it sets the
corresponding
irq
HIGH.
You can clear the interrupt by writing to the
Interrupt Clear Register
.
Following are the steps to control interrupt:
1. Setup
the
Interrupt Enable Register to generate interrupts.
•
The interrupt enable register is a 32-bit register. Each bit of the
INTEN Register
controls if the DMAC signals
an interrupt using the corresponding
irq
.
•
Programs the appropriate bit to control how the DMAC responds if it executes DMASEV:
√
Bit [N] = 0
If executing DMASEV for event
N
then the DMAC signals event
N
to all of the threads.
√
Bit [N] = 1
If executing DMASEV for event
N
then the DMAC sets
irq[N]
HIGH.
2. Program assembly code to set the corresponding
IRQ
HIGH by executing DMASEV.
•
Use DMASEV instruction to signal an interrupt using one of the IRQ outputs.
3. Clear the interrupt by writing to the Interrupt Clear Register
•
Each bit in the
INTCLR Register
controls the clearing of an interrupt.
•
Program to controls the clearing of the
irq
outputs:
√
Bit [N] = 0
The status of
irq[N]
does not change.
√
Bit [N] = 1
The DMAC sets
irq[N]
LOW
.
Interrupt also occurs if
DMA is at fault status
.
Summary
1. You can configure the DMAC with up to eight DMA channels, with each channel being capable of supporting a
single concurrent thread of DMA operation. In addition there is a single DMA manager thread to initialize the
DMA channel thread.
2. Channel
thread
A. Each channel thread does actual DMA operation. You must make assembly code representing your
intention. If you need a number of independent DMA channels, you must make a number of assembly
codes for each.
B. Assemble them, link them into one file, and load it into memory.
3. Start each channel using DBGCMD, DBGINST0, and DBGINST1 SFR.
Содержание S5PC100
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Страница 21: ...MEMORY MAP S5PC100 USER S MANUAL REV1 0 1 2 2 ...
Страница 33: ...BALL MAP SIZE POP S5PC100 USER S MANUAL REV1 0 1 1 8 VSS_HPLL AA12 VSSQ_UOTG AA19 VSS_UOTG AF21 VSS_ADC Y24 ...
Страница 34: ...S5PC100 USER S MANUAL REV1 0 BALL MAP SIZE POP 1 1 9 1 4 MCP CONNECTION ...
Страница 49: ...IROM CODE S5PC100 USER S MANUAL REV1 0 2 6 4 12 Mhz 300 0 Mhz 100 0 Mhz 79 5 Mhz 20 6 Mhz ...
Страница 159: ...S5PC100 USER S MANUAL REV1 0 CLOCK CONTROLLER 2 3 9 Figure 2 3 3 S5PC100 Clock Generation Circuit1 ...
Страница 174: ...CLOCK CONTROLLER S5PC100 USER S MANUAL REV1 0 2 3 24 Rs 0ohm Rf 1Mohm CL 10 35pF ...
Страница 322: ...CORESIGHT S5PC100 USER S MANUAL REV1 0 3 2 4 Figure 3 2 2 S5PC100 Coresight Structure ...
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Страница 345: ...S5PC100 USER S MANUAL REV1 0 ASYNC BRIDGE 3 4 3 Figure 3 4 2 Asynchronous Bridge Components ...
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Страница 524: ...S5PC100 USER S MANUAL REV1 0 CF CONTROLLER 5 5 29 48 DO9 Data 9 CF_D 9 49 D10 Data 10 CF_D 10 50 GND Ground ...
Страница 545: ...EXTERNAL BUS INTERFACE S5PC100 USER S MANUAL REV1 0 5 6 2 3 BLOCK DIAGRAM Figure 5 6 1 Memory Interface Through EBI ...
Страница 651: ...S5PC100 USER S MANUAL REV1 0 UART 8 1 27 Figure 8 1 10 UINTSP UINTP and UINTM block diagram ...
Страница 652: ...UART S5PC100 USER S MANUAL REV1 0 8 1 28 NOTES ...
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Страница 800: ...MIPI CSIS S5PC100 USER S MANUAL REV1 0 8 8 10 NOTES ...
Страница 816: ...USB HOST CONTROLLER S5PC100 USER S MANUAL REV1 0 8 9 16 ...
Страница 926: ...MODEM INTERFACE S5PC100 USER S MANUAL REV1 0 8 11 4 4 ADDRESS MAPPING Figure 8 11 2 MODEM I F Address Mapping ...
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Страница 1019: ...S5PC100 USER S MANUAL REV1 0 DISPLAY CONTROLLER 9 1 5 Figure 9 1 2 Block Diagram of the Data Flow ...
Страница 1110: ...IMAGE ROTATOR S5PC100 USER S MANUAL REV1 0 9 2 2 3 1 ORIGINAL IMAGE 3 2 FLIP VERTICAL 3 3 FLIP HORIZONTAL ...
Страница 1111: ...S5PC100 USER S MANUAL REV1 0 IMAGE ROTATOR 9 2 3 3 4 180 DEGREE ROTATION ...
Страница 1112: ...IMAGE ROTATOR S5PC100 USER S MANUAL REV1 0 9 2 4 3 5 90 AND 270 DEGREE ROTATION ...
Страница 1118: ...S5PC100 USER S MANUAL REV1 0 CAMERA INTERFACE 9 3 3 Figure 9 3 2 Camera Interface Overview ...
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Страница 1245: ...3D ACCELERATOR S5PC100 USER S MANUAL REV1 0 9 6 18 ...
Страница 1310: ...S5PC100 USER S MANUAL REV1 0 3D ACCELERATOR 9 6 83 Figure 9 6 18 Per Fragment Function Block Diagram ...
Страница 1321: ...3D ACCELERATOR S5PC100 USER S MANUAL REV1 0 9 6 94 Interface with AXI Bus FIMG_3DSEV1 1 AXI DMA support AMBA AXI BUS protocol ...
Страница 1353: ...TVOUT VIDEO DAC S5PC100 USER S MANUAL REV1 0 9 7 32 ...
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Страница 1731: ...SPDIF TRANSMITTER S5PC100 USER S MANUAL REV1 0 10 6 16 NOTES ...
Страница 1744: ...S5PC100 USER S MANUAL REV1 0 ADC AND TOUCH SCREEN INTERFACE 10 7 13 NOTES ...
Страница 1750: ...KEYPAD INTERFACE S5PC100 USER S MANUAL REV1 0 10 8 6 Figure 10 8 7 Keypad I F Block Diagram ...
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Страница 1779: ...SECURE DOMAIN MANAGER S5PC100 USER S MANUAL REV1 0 11 2 22 NOTES ...
Страница 1841: ...S5PC100 USER S MANUAL REV1 0 ELECTRICAL DATA 12 1 9 EXTCLK tRESW nRESET Figure 12 1 4 Manual Reset Input Timing ...
Страница 1846: ...ELECTRICAL DATA S5PC100 USER S MANUAL REV1 0 12 1 14 6 ONENAND AC ELECTRICAL CHARACTERISTICS Figure 12 1 7 OneNand Flash Timing ...