M32C8A Datasheet, PDF (139/372 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M32C/80 Series

M32C/8A Group
13. DMAC
DMAi Request Source Select Register (i=0 to 3)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
DM0SL to DM3SL
Address
0378h, 0379h, 037Ah, 037Bh
Bit Symbol
Bit Name
Function
DSEL0
After Reset
0X00 0000b
RW
RW
DSEL1
DSEL2
DMA request source
select bits⁽¹⁾
DSEL3
RW
See Table "DMiSL register function (i = 0 to 3)"
Do not set to values other than specified in the
RW
Table.
RW
DSEL4
RW
When a software trigger is selected, a DMA
DSR
Software DMA request bit⁽²⁾
request is generated by setting this bit to 1
RW
(Read as 0)
−
(b6)
Reserved bit
Read as undefined value
−
DRQ
DMA request bit^{(2, 3)}
0: Not requested
1: Requested
RW
NOTES:
1. Change settings of bits DSEL4 to DSEL0 while bits MDi1 and MDi0 in the DMD0 or DMD1 register are set to 00b (DMA
disabled). Also, when bits DSEL4 to DSEL0 are change, set the DRQ bit to 1 at the same time.
e.g., MOV.B #083h, DMiSL ; Select timer A0
2. When the DSR bit is set to 1, set the DRQ bit to 1 at the same time.
e.g., OR.B #0A0h, DMiSL
3. Do not write a 0 to the DRQ bit.
Figure 13.2 DM0SL to DM3SL Registers
Rev.1.00 Jul 15, 2007 Page 122 of 352
REJ09B0385-0100