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M16C/29 Group
DMAi source pointer (i = 0, 1) (Note)
(b19)
(b23)
b3
b7
Note: If the DSD bit of DMiCON register is "0" (fixed), this register can only be written to when the DMAE bit of
DMiCON register is "0" (DMA disabled).
If the DSD bit is "1" (forward direction), this register can be written to at any time.
If the DSD bit is "1" and the DMAE bit is "1" (DMA enabled), the DMAi forward address pointer can be read from
this register. Otherwise, the value written to it can be read.
DMAi destination pointer (i = 0, 1)(Note)
(b19)
(b23)
b3
b7
Note: If the DAD bit of DMiCON register is "0" (fixed), this register can only be written to when the DMAE bit of
DMiCON register is "0"(DMA disabled).
If the DAD bit is "1" (forward direction), this register can be written to at any time.
If the DAD bit is "1" and the DMAE bit is "1" (DMA enabled), the DMAi forward address pointer can be read from
this register. Otherwise, the value written to it can be read.
DMAi transfer counter (i = 0, 1)
(b15)
b7
Figure 11.4 SAR0, SAR1, DAR0, DAR1, TCR0, and TCR1 Registers
Rev.1.00 Nov 01,2004
REJ09B0101-0100Z
(b16)(b15)
(b8)
b0
b7
b0
Set the source address of transfer
Nothing is assigned. When write, set "0". When read, these contents
are "0".
(b16)
(b15)
(b8)
b0
b7
b0
Set the destination address of transfer
Nothing is assigned. When write, set "0". When read, these contents
are "0".
(b8)
b0
b7
b0
Set the transfer count minus 1. The written value
is stored in the DMAi transfer counter reload
register, and when the DMAE bit of DMiCON
register is set to "1" (DMA enabled) or the DMAi
transfer counter underflows when the DMASL bit
of DMiCON register is "1" (repeat transfer), the
value of the DMAi transfer counter reload register
is transferred to the DMAi transfer counter.
When read, the DMAi transfer counter is read.
page 87 of 402
Symbol
b7
b0
SAR0
SAR1
Function
b7
b0
Symbol
DAR0
DAR1
Function
Symbol
TCR0
TCR1
Function
Address
After reset
0022
to 0020
Indeterminate
16
16
0032
to 0030
Indeterminate
16
16
Setting range
00000
to FFFFF
16
16
Address
After reset
0026
to 0024
Indeterminate
16
16
0036
to 0034
Indeterminate
16
16
Setting range
00000
to FFFFF
16
16
Address
After reset
0029
, 0028
Indeterminate
16
16
0039
, 0038
Indeterminate
16
16
Setting range
0000
to FFFF
16
16
11. DMAC
RW
RW
RW
RW
RW
RW
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