9
9-35
Ver.0.10
DMAC
9.3 Functional Description of the DMAC
(6) Transfer byte positions
When the transfer unit = 8 bits, the LSB of the address register is effective for both source and
destination. (Therefore, in addition to data transfers between even addresses or between odd
addresses, data may be transferred from even address to odd address, or from odd address to
even address.)
When the transfer unit = 8 bits, the LSB of the address register (D15 of the address register) is
ignored, and data are always transferred in two bytes aligned to the 16-bit bus.
The diagram below shows the valid transfer byte positions.
Figure 9.3.3 Transfer Byte Positions
D0
D7 D8
D15
8 bits
+
0
+
1
Source
Destination
<When transfer unit = 8 bits>
16 bits
D0
D7 D8
D15
+
0
+
1
<When transfer unit = 16 bits>
8 bits
8 bits
8 bits
16 bits
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 ...