M16C26A Datasheet, PDF (103/352 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

M16C/26A Group (M16C/26A, M16C/26B, M16C/26T)
11. DMAC
DMAi source pointer (i = 0, 1) ⁽¹⁾
(b23)
b7
(b19)
b3
(b16)(b15)
b0 b7
(b8)
b0 b7
b0 _Symbol
SAR0
SAR1
Address
002216 to 002016
003216 to 003016
After reset
Indeterminate
Indeterminate
Function
Setting range
RW
Set the source address of transfer
0000016 to FFFFF16 RW
Nothing is assigned. When write, set “0”. When read, these contents
are “0”.
NOTE:
1. If the DSD bit in the DMiCON register is “0” (fixed), this register can only be written to when the DMAE bit in the
DMiCON register is “0” (DMA disabled). If the DSD bit is set to “1” (forward direction), this register can be written to
at any time. If the DSD bit is set to “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)⁽¹⁾
(b23)
b7
(b19)
b3
(b16) (b15)
b0 b7
(b8)
b0 b7
b0 _Symbol
DAR0
DAR1
Address
002616 to 002416
003616 to 003416
After reset
Indeterminate
Indeterminate
Function
Setting range
RW
Set the destination address of transfer
0000016 to FFFFF16 RW
Nothing is assigned. When write, set “0”. When read, these contents
are “0”.
NOTE:
1. If the DAD bit in the DMiCON register is “0” (fixed), this register can only be written to when the DMAE bit in the
DMiCON register is “0”(DMA disabled).If the DAD bit is set to “1” (forward direction), this register can be written to at
any time. If the DAD bit is set to “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
(b8)
b0 b7
b0
Symbol
Address
After reset
TCR0
002916, 002816 Indeterminate
TCR1
003916, 003816 Indeterminate
Function
Set the transfer count minus 1. The written value is
stored in the DMAi transfer counter reload register, and
when the DMAE bit in the DMiCON register is set to “1”
(DMA enabled) or the DMAi transfer counter
underflows when the DMASL bit in 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.
Setting range
RW
000016 to FFFF16 RW
Figure 11.4 SAR0 and SAR1, DAR0 and DAR1, TCR0 and TCR1 Registers
Rev. 2.00 Feb.15, 2007 page 86 of 329
REJ09B0202-0200