9
9-33
Rev.1.0
9.2.7 DMA Interrupt Request Status Registers
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DMA0-4 Interrupt Request Status Register (DM04ITST)
<Address: H'0080 0400>
D0
1
2
3
4
5
6
D7
DMITST4 DMITST3 DMITST2 DMITST1 DMITST0
<When reset: H'00>
D
Bit Name
Function
R
W
0-2
No functions assigned
0
–
3
DMITST4
0: No interrupt requested
(DMA4 interrupt request status)
1: Interrupt requested
4
DMITST3
(DMA3 interrupt request status)
5
DMITST2
(DMA2 interrupt request status)
6
DMITST1
(DMA1 interrupt request status)
7
DMITST0
(DMA0 interrupt request status)
W= : Only writing 0 is effective. Writing 1 has no effect, the bit retains the value it had before writing.
The DMA0-4 Interrupt Request Status Register helps to know the status of interrupt requests on
DMA channels 0-4. If the DMAn interrupt request status bit (n = 0-4) is set to 1, it means that the
channel has a DMA interrupt request generated.
DMITSTn (DMAn interrupt request status) bit (n = 0-4)
The DMAn interrupt request status bit is set in hardware, and cannot be set in software.
The DMAn interrupt request status bit is cleared by writing 0 in software.
Note: The DMAn interrupt request status bit is not cleared by writing 0 to the DMA Interrupt
Control Register "interrupt request bit" of the Interrupt Controller.
When writing to the DMA0-4 Interrupt Request Status Register, be sure to write 0 for the bits to be
cleared and 1 for all other bits. Writing 1 in software does not affect any bit of this register, the bit
retains the value it had before writing.
DMAC
9.2 DMAC Related Registers
Summary of Contents for 32172
Page 20: ... This is a blank page 16 ...
Page 21: ...1 1 Overview 1 2 Block Diagram 1 3 Pin Functions 1 4 Pin Layout CHAPTER 1 CHAPTER 1 OVERVIEW ...
Page 44: ...1 1 24 Rev 1 0 This is a blank page Overview 1 4 Pin Layout ...
Page 58: ...2 2 14 Rev 1 0 This is a blank page CPU 2 6 Data Formats ...
Page 122: ...4 4 26 Rev 1 0 This is a blank page EIT 4 13 Precautions on EIT ...
Page 200: ...7 7 6 Rev 1 0 This is a blank page RESET 7 4 Precautions to Be Taken Immediately after Reset ...
Page 298: ...9 9 58 Rev 1 0 This is a blank page DMAC 9 4 Precautions on Using DMAC ...
Page 776: ...19 19 10 Rev 1 0 RAM BACKUP MODE 19 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Page 782: ...20 20 6 Rev 1 0 OSCILLATION CIRCUIT 20 2 Clock Generator Circuit This is a blank page ...
Page 856: ...23 23 26 Rev 1 0 This is a blank page ELECTRICAL CHARACTERISTICS 23 6 AC Characteristics ...
Page 857: ...24 1 A D Conversion Characteristics CHAPTER 24 CHAPTER 24 STANDARD CHARACTERISTICS ...
Page 859: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Page 865: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...