12.3.6
Suspending, Restarting, and Canceling DMA Transfer ......................................................................... 328
12.3.7
DMA Activation Source ........................................................................................................................ 329
12.3.7.1
Software Trigger ............................................................................................................................... 329
12.3.7.2
Interrupt Signals on External Pins and Peripheral Function Interrupts ............................................. 329
12.3.8
Channel Arbitration ................................................................................................................................ 330
12.3.9
Reload Function ..................................................................................................................................... 330
12.3.10
Rotate ..................................................................................................................................................... 331
12.4
Interrupts ......................................................................................................................................................... 331
12.5
Low-Power Consumption ............................................................................................................................... 332
12.6
Usage Notes .................................................................................................................................................... 333
12.6.1
Register Settings .................................................................................................................................... 333
12.6.2
DMA Transfer to External Devices........................................................................................................ 333
13.
Data Transfer Controller (DTC) ................................................................................................................ 334
13.1
Overview ......................................................................................................................................................... 334
13.2
Register Descriptions ...................................................................................................................................... 336
13.2.1
DTC Mode Register A (MRA)............................................................................................................... 337
13.2.2
DTC Mode Register B (MRB) ............................................................................................................... 338
13.2.3
DTC Source Address register (SAR) ..................................................................................................... 339
13.2.4
DTC Destination Address Register (DAR) ............................................................................................ 339
13.2.5
DTC Transfer Count Register A (CRA)................................................................................................. 340
13.2.6
DTC Transfer Count Register B (CRB) ................................................................................................. 341
13.2.7
DTC Control Register (DTCCR) ........................................................................................................... 341
13.2.8
DTC Vector Base Register (DTCVBR) ................................................................................................. 342
13.2.9
DTC Address Mode Register (DTCADMOD)....................................................................................... 343
13.2.10
DTC Module Start Register (DTCST) ................................................................................................... 343
13.3
Sources of Activation ...................................................................................................................................... 344
13.3.1
Allocating Transfer Data and DTC Vector Table .................................................................................. 344
13.3.2
Startup source and Vector Address ........................................................................................................ 346
13.4
Operation ......................................................................................................................................................... 349
13.4.1
Transfer Data Read Skip Function ......................................................................................................... 352
13.4.2
Transfer Data Write-Back Skip Function ............................................................................................... 353
13.4.3
Normal Transfer Mode ........................................................................................................................... 354
13.4.4
Repeat Transfer Mode ............................................................................................................................ 355
13.4.5
Block Transfer Mode ............................................................................................................................. 357
13.4.6
Chain Transfer ........................................................................................................................................ 358
13.4.7
Operation Timing ................................................................................................................................... 359
13.4.8
Execution Cycle of the DTC .................................................................................................................. 361
13.4.9
DTC Bus Mastership Release Timing .................................................................................................... 361
13.5
DTC Setting Procedure ................................................................................................................................... 362
13.6
Examples of DTC Usage ................................................................................................................................. 363
Summary of Contents for RX600 Series
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