Renesas M16C/60 Series Hardware Manual page 105

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M16C/6N5 Group
DMAi source pointer (i = 0, 1) (Note)
(b23) (b19) (b16)
b7 b3
Note: If the DSD bit of the DMiCON register is "0" (fixed), this register can only be written to when the DMAE bit of the
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)
(b23) (b19) (b16)
b7 b3
Note: If the DAD bit of the DMiCON register is "0" (fixed), this register can only be written to when the DMAE bit of the
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 1.12.4 SAR0, SAR1, DAR0, DAR1, TCR0 and TCR1 Registers
Rev.1.00 2003.05.30 page 91
(b15) (b8)
b0 b7 b0 b7
Set the source address of transfer
Nothing is assigned. When write, set to "0".
When read, these contents are "0".
(b15) (b8)
b0 b7 b0 b7
Set the destination address of transfer
Nothing is assigned. When write, set to "0".
When read, these contents are "0".
(b8)
b0 b7
Set the transfer count minus 1.
The written value is stored in the DMAi transfer counter
reload register, and when the DMAE bit of the DMiCON
register is set to "1" (DMA enabled) or the DMAi transfer
counter underflows when the DMASL bit of the 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.
Symbol
b0
SAR0 0022
SAR1 0032
Function
Symbol
b0
DAR0 0026
DAR1 0036
Function
b0 Symbol
TCR0 0029
TCR1 0039
Function
Address After reset
to 0020 Indeterminate
16 16
to 0030 Indeterminate
16 16
Setting range
RW
00000 to FFFFF
RW
16 16
-
Address After reset
to 0024 Indeterminate
16 16
to 0034 Indeterminate
16 16
Setting range
RW
00000 to FFFFF
RW
16 16
-
Address After reset
, 0028 Indeterminate
16 16
, 0038 Indeterminate
16 16
Setting range
RW
00000 to FFFFF
RW
16 16
DMAC