M16C/62P Group (M16C/62P, M16C/62PT)
14. DMAC
Rev.2.41
Jan 10, 2006
Page 128 of 390
REJ09B0185-0241
Figure 14.2
DM0SL Register
DMA0 Request Factor Select Register
Symbol
DM0SL
Bit Symbol
RW
NOTES :
1.
1 0 1 1 b
After Reset
00h
Address
03B8h
1 0 0 1 b
1 0 1 0 b
Timer B2
UART0 Transmit
0 1 1 1 b
1 0 0 0 b
Timer B0
Timer B1
0 1 0 1 b
0 1 1 0 b
Timer A3
Timer A4
0 0 1 0 b
0 0 1 1 b
0 1 0 0 b
Timer A2
Timer A0
Timer A1
DSEL3 to DSEL0
0 0 0 0 b
0 0 0 1 b
DMS=0(Basic Factor of Request)
Falling Edge of INT0
_____
Pin
Softw are Trigger
DSR
Softw are DMA Request Bit
A DMA request is generated by setting this bit
to “1” w hen the DMS bit is “0” (basic factor)
and the DSEL3 to DSEL0 bits are “0001b”
(softw are trigger).
The value of this bit w hen read is “0”.
RW
DMS
DMA Request Factor Expansion
Select Bit
0: Basic factor of request
1: Extended factor of request
RW
RW
—
(b5-b4)
Nothing is assigned. When w rite, set to “0”.
When read, their content are “0”.
—
RW
DSEL1
RW
DSEL2
RW
Function
DSEL0
DMA Request Factor Select Bit
(NOTE 1)
DSEL3
Bit Name
The factors of DMA0 requests can be selected by a combination of DMS bit and DSEL3 to DSEL0 bits in the manner
described below .
b7 b6 b5 b4 b3 b2 b1 b0
1 1 0 0 b
1 1 0 1 b
1 1 1 0 b
1 1 1 1 b
UART0 Receive
UART2 Transmit
UART2 Receive
A/D Conversion
UART1 Transmit
DMS=1(Extended Factor of Request)
—
—
—
—
—
—
Tw o Edges of INT0
_____
Pin
Timer B3
Timer B4
Timer B5
—
—
—
—
—
—
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