Preliminary
S3C2451X RISC MICROPROCESSOR
DMA CONTROLLER
9-17
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
DMA REQUESET SELECTION register (DmaREQSEL)
Register Address
R/W
Description
Reset
Value
DMAREQSEL0
0x4B000024
R/W
DMA0 Request Selection Register
000
DMAREQSEL1
0x4B000124
R/W
DMA1 Request Selection Register
000
DMAREQSEL2
0x4B000224
R/W
DMA2 Request Selection Register
000
DMAREQSEL3
0x4B000324
R/W
DMA3 Request Selection Register
000
DMAREQSEL4
0x4B000424
R/W
DMA4 Request Selection Register
000
DMAREQSEL5
0x4B000524
R/W
DMA5 Request Selection Register
000
DMAREQSEL6
0x4B000624
R/W
DMA6 Request Selection Register
000
DMAREQSEL7
0x4B000724
R/W
DMA7 Request Selection Register
000
DMAREQSELn Bit
Description
Initial
State
HWSRCSEL
[5:1]
Select DMA request source for each DMA.
→
Refer to the Table 11-1 on page 11-2.
This bits control the 8-1 MUX to select the DMA request source of
each DMA. These bits have meanings if and only if H/W request
mode is selected by DMAREQSELn[0].
00000
SWHW_SEL
[0]
Select the DMA source between software (S/W request mode) and
hardware (H/W request mode).
0: S/W request mode is selected and DMA is triggered by setting
SW_TRIG bit of DMASKTRIG control register.
1: DMA source selected by bit [5:1] is used to trigger the DMA
operation.
0