M30240ECFP MITSUBISHI [Mitsubishi Electric Semiconductor], M30240ECFP Datasheet - Page 65

• Manufacturer Part Number: M30240ECFP
• Description: M30240 Group Specification
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Preliminary Specifications REV. E
Specifications in this manual are tentative and subject to change
DMAC
Figure 1.55: DMAC register (2)
Figure 1.56: DMAC register (3)
(b23)
(b23)
DMAi transfer counter (i = 0, 1)
DMAi source pointer (i = 0, 1)
DMAi destination pointer (i = 0, 1)
DMAi control register
b7
(b15)
b7
b7
b7
b6
b5
(b19)
(b19)
b4
b3
b3
b3
b2
(b16)(b15)
(b16)
(b8)
b0
b0
b0
b1
(b15)
b7
b7
b7
b0
Note 1: DMA request can be cleared by resetting the bit.
Note 2: This bit can only be set to “0”.
Note 3: Source address direction select bit and destination address direction select bit
Nothing is assigned.
These bits can neither be set nor reset. When read, the value of these bits is “0”.
Bit symbol
DMBIT
DMASL
DMAS
DMAE
DSD
DAD
Symbol
DMiCON(i=0,1)
cannot be set to “1” simultaneously.
Nothing is assigned.
These bits can neither be set nor reset. When read, the value of these bits is “0”.
Nothing is assigned.
These bits can neither be set nor reset. When read, the value of these bits is “0”.
Transfer counter
Set a value one less than the transfer count
Source pointer
Stores the source address
Destination pointer
Stores the destination address
(b8)
(b8)
b0
b0
b0
Transfer unit bit select bit
Repeat transfer mode
DMA request bit (Note 1)
DMA enable bit
Source address direction
select bit (Note 3)
Destination address
direction select bit (Note 3)
b7
b7
1-65
Bit name
Function
Function
Function
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
002C
select bit
Address
Symbol
TCR0
TCR1
16
b0
b0
, 003C
Symbol
SAR0
SAR1
Symbol
DAR0
DAR1
16
0 : 16 bits
1 : 8 bits
0 : Single transfer
1 : Repeat transfer
0 : DMA not requested
1 : DMA requested
0 : Disabled
1 : Enabled
0 : Fixed
1 : Forward
0 : Fixed
1 : Forward
0029
0039
Address
16
16
When reset
0022
0032
0026
0036
00000X00
, 0028
, 0038
00000
Address
Address
00000
16
16
16
16
0000
Transfer count
Transfer count
16
16
Transfer count
to 0020
to 0030
to 0024
to 0034
Function
specification
specification
specification
16
16
16
to FFFFF
to FFFFF
to FFFF
2
Indeterminate
Indeterminate
When reset
16
16
16
16
Mitsubishi microcomputers
16
M30240 Group
16
Indeterminate
Indeterminate
16
Indeterminate
Indeterminate
When reset
When reset
R W
R W
R W
R
(Note 2)
W