M30622MA-XXXFP RENESAS [Renesas Technology Corp], M30622MA-XXXFP Datasheet - Page 432

• Manufacturer Part Number: M30622MA-XXXFP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY
• Manufacturer: RENESAS [Renesas Technology Corp]

DMAC
Figure 2.9.1. Memory map of DMAC-related registers
(7) Switching function
(8) Registers related to DMAC
(a) Switching between one-shot transfer and repeated transfer
• A fixed address from an arbitrary 1M byte space, one-shot transfer ........................................ P420
• An arbitrary 1M byte space from a fixed address, repeated transfer ........................................ P422
Figure 2.9.1 shows the memory map of DMAC-related registers, and Figures 2.9.2 and 2.9.3 show
DMAC-related registers.
'One-shot transfer' refers to a mode in which DMA is disabled after the transfer counter underflows.
'Repeated transfer' refers to a mode in which a reload is carried out after the transfer counter under-
flows. The reload is carried out for the transfer counter and on the address pointer subjected to
forward direction.
The following are examples of operation in which the options listed are selected.
03BA
002C
003C
004B
004C
03B8
03B9
0020
0021
0022
0023
0024
0025
0026
0027
0028
0029
0030
0031
0032
0033
0034
0035
0036
0037
0038
0039
16
16
16
16
16
16
16
16
16
16
15
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
DMA0 source pointer (SAR0)
DMA0 transfer counter (TCR0)
DMA0 control register (DM0CON)
DMA1 source pointer (SAR1)
DMA1 destination pointer (DAR1)
DMA1 transfer counter (TCR1)
DMA1 control register (DM1CON)
DMA0 cause select register (DM0SL)
DMA1 cause select register (DM1SL)
DMA0 destination pointer (DAR0)
DMA0 interrupt control register (DM0IC)
DMA1 interrupt control register (DM1IC)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Mitsubishi microcomputers
M16C / 62 Group
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