Dtc Mode Register C (Mrc) - Renesas RX100 Series User Manual

RX13T Group
16.2.3

DTC Mode Register C (MRC)

Address(es): (inaccessible directly from the CPU)
b7 b6
— —
Value after reset: x x
x: Undefined
Bit Symbol Bit Name
b0 DISPE Displacement Addition
b7 to b1 — Reserved
The MRC register is used to select DTC operating mode and cannot be accessed directly from the CPU.
This register can only be used in full-address mode, but not in short-address mode. Therefore, set the
DTCADMOD.SHORT bit to 0 (full-address mode) when using the displacement addition function.
DISPE Bit (Displacement Addition)
This bit specifies whether to use the SAR + DTCDISP value as the transfer source address.
When setting the DISPE bit to 1, set the MRA.WBDIS bit to 1 (does not write back the transfer information) and set the
DTCCR.RRS bit to 0 (transfer information read is not skipped).
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
b5 b4 b3 b2
— — — —
x x x x
Description
0: The displacement value is not added to the transfer source
address.
1: The displacement value is added to the transfer source address.
Set these bits to 0.
b1 b0
— DISPE
x x
16. Data Transfer Controller (DTCb)
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