Renesas RX Series User Manual

R01UH0823EJ0100 Rev.1.00 Page 366 of 1823
Jul 31, 2019
RX23W Group 18. DMA Controller (DMACA)
Figure 18.9 shows a flowchart of the XY conversion.
Figure 18.9 XY Conversion Flowchart Using Offset Addition in Repeat Transfer Mode
Start
Set the address, repeat size, and number of repeat
operations.
Set repeat transfer mode.
Enable repeat size end interrupts.
Write 1 to the DTE bit in DMAC0.DMCNT.
Receive a transfer request.
Repeat size and number of repeat operations decremented.
Number of repeat operations = 0
Repeat size = 0
Return to the transfer source address.
Generate a repeat size end interrupt.
Set “transfer source address + 4”
Yes
No
Yes
No
End
: User side processing
: DMAC side processing
Data transfer
(When transfer data size = 32 bits)

Renesas RX Series Specifications

General

Brand	Renesas
Model	RX Series
Category	Microcontrollers
Language	English