M30622MA-XXXFP RENESAS [Renesas Technology Corp], M30622MA-XXXFP Datasheet - Page 436

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

DMAC
Figure 2.9.5. Set-up procedure of one-shot transfer mode
(b15)
(b23)
(b23)
Setting DMAi source pointer
Setting DMAi transfer counter
Setting DMAi control register
Setting DMAi destination pointer
b0
b7
Setting DMAi request cause select register
b7
Setting DMAi control register
b7
b7
0
b7
When software DMA request bit = “1”
0 1
(b19)
(b19)
b3
b3
0
1
0
0
0
0 1
0 1
(b16)
(b16)
(b8)
b0
b0
b0
b0
b0
b0
(b15)
(b15)
b7
DMA request cause select bit
Software DMA request bit
DMA enable bit
Transfer unit bit select bit
Repeat transfer mode select bit
DMA request bit
Source address direction select bit
b7
b3 b2 b1 b0
Destination address direction select bit
b7
DMA enable bit
0 0 0 1 : Software trigger
Set to “0”
1 : 8 bits
0 : Single transfer
1 : Enabled
0 : DMA not requested
1 : Forward (Bit 4 and bit 5 cannot be set to “1” simultaneously)
0 : Fixed (Bit 4 and bit 5 cannot be set to “1” simultaneously)
0 : Disabled
DMAi request cause select register (i = 0, 1) [Address 03B8
DMAi control register (i = 0, 1) [Address 002C
DMiCON(i = 0, 1)
DMiSL(i = 0, 1)
DMAi control register (i = 0, 1) [Address 002C
DMiCON(i = 0, 1)
Start DMA transmission
DMA0 destination pointer [Address 0026
DMA1 destination pointer [Address 0036
DMA0 source pointer [Address 0022
DMA1 source pointer [Address 0032
(b8)
(b8)
b0
b0
b0
b7
b7
Transfer counter
Note: Clear DMA request bit simultaneously again.
DMA0 transfer counter [Address 0029
DMA1 transfer counter [Address 0039
Set a value one less than the transfer count
Source pointer
Destination pointer
Stores the source address
Stores the destination address
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
16
16
, 003C
, 003C
b0
b0
16
16
16
16
]
]
to 0020
to 0030
16
16
16
to 0024
to 0034
, 03BA
16
16
16
16
] SAR0
] SAR1
, 0028
, 0038
16
16
16
Mitsubishi microcomputers
]
] DAR0
] DAR1
M16C / 62 Group
16
16
] TCR0
] TCR1
421