9
9-31
Ver.0.10
DMAC
9.3 Functional Description of the DMAC
9.3.2 DMA Transfer Processing Procedure
Shown below is an example of how to control DMA transfer in cases when performing transfer in
DMA channel 0.
Figure 9.3.1 Example of a DMA Transfer Processing Procedure
DMA transfer starts as requested by
internal peripheral I/O
DMA transfer processing starts
Transfer count register underflows
Interrupt request generated
Set DMA0 Channel Control Register
Set DMA0-4 Interrupt Request Status Register
Set DMA0 Channel Control Register
Set DMA0 Source Address Register
Set DMA0 Destination Address Register
Set DMA0 Count Register
Setting DMAC
related registers
Starting DMA
transfer
DMA transfer
completed
• Transfers disabled
• Clears interrupt request
status bit
Set DMA0-4 Interrupt Mask Register
• Source address of transfer
• Address
• Number of times DMA
transfer performed
• Transfer mode, cause of
request, transfer size,
address direction, and
transfer enable
DMA operation completed
• Enables interrupt request
Set the interrupt controller's DMA0-4
Interrupt Control Register
• Interrupt priority level
Setting interrupt
controller related
registers
Summary of Contents for M32170F3VFP
Page 42: ...1 1 24 Ver 0 10 OVERVIEW 1 4 Pin Layout This is a blank page ...
Page 56: ...2 2 14 Ver 0 10 This is a blank page ...
Page 88: ...3 3 32 Ver 0 10 ADDRESS SPACE 3 7 Notes on Address Space This is a blank page ...
Page 270: ...9 9 40 Ver 0 10 DMAC 9 4 Precautions about the DMAC This is a blank page ...
Page 614: ...12 12 64 Ver 0 10 This is a blank page SERIAL I O 12 9 Precautions on Using UART Mode ...
Page 756: ...17 17 10 Ver 0 10 RAM BACKUP MODE 17 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Page 762: ...18 18 6 Ver 0 10 OSCILLATION CIRCUIT 18 2 Clock Generator Circuit This is a blank page ...
Page 831: ...CHAPTER 22 CHAPTER 22 TYPICAL CHARACTERISTICS 22 1 A D Conversion Characteristics ...
Page 833: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Page 841: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...