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CHAPTER 16 DMAC (DMA Controller)
[bit27, bit26] WS (Word Size): Transfer data size selection
Sets the transfer data size for the corresponding channel as follows. DMA performs the specified number of
transfers using the data size specified in this register.
•
Initialized to "00
B
" when resetting.
•
The read / write is possible.
[bit25] SADM (Source-ADdr. count-Mode select) *: Transfer source address count mode
setting
Specifies what to do to the transfer source address for the corresponding channel after each transfer.
Address incrementing and decrementing is performed after each transfer in accordance with the "count size
for the transfer source address" (SASZ). When the transfer completes, the next access address is written to
the corresponding address register (DMASA).
Accordingly, the transfer source address register is not updated until the DMA transfer completes.
To use a fixed address, set this bit to "0" or "1", and set the address count sizes (SASZ and DASZ) to "0".
•
Initialized to "0" when resetting.
•
The read / write is possible.
[bit24] DADM (Destination-ADdr. Count-Mode select) *:
Transfer destination address
count mode setting
Specifies what to do to the transfer destination address for the corresponding channel after each transfer.
Address incrementing and decrementing is performed after each transfer in accordance with the "count size
for the transfer destination address" (DASZ). When the transfer completes, the next access address is
written to the corresponding address register (DMADA).
Accordingly, the transfer destination address register is not updated until the DMA transfer completes.
To use a fixed address, set this bit to "0" or "1", and set the address count sizes (SASZ and DASZ) to "0".
•
Initialized to "0" when resetting.
•
The read / write is possible.
WS
Function
00
B
Transfer by BYTE unit (initial value)
01
B
Transfer by HALF-WORD unit
10
B
Transfer by WORD width unit
11
B
Setting disabled
SADM
Function
0
Transfer source addresses are increased (initial value).
1
Transfer source addresses are decreased.
DADM
Function
0
Transfer destination address is increased (initial value).
1
Transfer destination address is decreased.
Summary of Contents for FR60Lite
Page 3: ......
Page 5: ......
Page 115: ...100 CHAPTER 3 CPU AND CONTROL UNITS ...
Page 127: ...112 CHAPTER 4 I O PORTS ...
Page 143: ...128 CHAPTER 5 INTERRUPT CONTROLLER ...
Page 155: ...140 CHAPTER 6 EXTERNAL INTERRUPT AND NMI CONTROLLER ...
Page 197: ...182 CHAPTER 9 PPG Programmable Pulse Generator ...
Page 337: ...322 CHAPTER 13 UART ...
Page 417: ...402 CHAPTER 16 DMAC DMA Controller ...
Page 445: ...430 CHAPTER 17 FLASH MEMORY ...
Page 451: ...436 CHAPTER 18 SERIAL PROGRAMMING CONNECTION ...
Page 493: ...478 APPENDIX F Precautions on Handling ...
Page 494: ...479 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
Page 507: ...492 INDEX ...
Page 509: ......