Rev. 2.00, 09/03, page 250 of 690
8.3.6
DMA Extended Resource Selectors 0, 1 (DMARS0, DMARS1)
DMARS is a 16-bit readable/writable register that specifies the DMA transfer request sources
from peripheral modules in each channel. DMARS0 specifies for channels 0 and 1, DMARS1 for
channels 2 and 3. This register can set the transfer request of SCIF0, SCIF2, and USB.
When MID/RID other than the values listed in table 8.2 is set, the operation of this LSI is not
guaranteed. The transfer request from DMARS is valid only when the resource select bits (RS3 to
RS0) has been set to B'1000 for CHCR_0 to CHCR_3. Otherwise, even if DMARS has been set,
transfer request source is not accepted.
•
DMARS0
Bit
Bit
Name
Initial
Value
R/W
Description
15
14
13
12
11
10
C1MID5
C1MID4
C1MID3
C1MID2
C1MID1
C1MID0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
Transfer request source module ID5 to ID0 for DMA channel
1 (MID)
See table 8.2.
9
8
C1RID1
C1RID0
0
0
R/W
R/W
Transfer request resource register ID1 to ID0 for DMA
channel 1 (RID)
See table 8.2.
7
6
5
4
3
2
C0MID5
C0MID4
C0MID3
C0MID2
C0MID1
C0MID0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
Transfer request source module ID5 to ID0 for DMA channel
0 (MID)
See table 8.2
1
0
C0RID1
C0RID0
0
0
R/W
R/W
Transfer request resource register ID1 to ID0 for DMA
channel 0 (RID)
See table 8.2.
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