參數(shù)資料
型號(hào)： M306H7MC-XXXFP
元件分類： 微控制器/微處理器
英文描述： 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100
封裝： 14 X 20 MM, 0.65 MM PITCH, PLASTIC, QFP-100
文件頁(yè)數(shù)： 78/115頁(yè)
文件大小： 3146K
代理商： M306H7MC-XXXFP
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Rev.2.10
Oct 25, 2006
Page 65 of 326
REJ03B0152-0210
M306H7MG-XXXFP/MC-XXXFP/FGFP
8. DMAC
Figure 8.3
DM1SL Register, DM0CON Register, and DM1CON Registers
DMAi control register (i = 0,1)
Symbol
Address
After reset
DM0CON
002C16
00000X002
DM1CON
003C16
00000X002
Bit name
Function
Bit symbol
Transfer unit bit select bit
b7
b6
b5
b4
b3
b2
b1
b0
0 : 16 bits
1 : 8 bits
DMBIT
DMASL
DMAS
DMAE
Repeat transfer mode
select bit
0 : Single transfer
1 : Repeat transfer
DMA request bit
0 : DMA not requested
1 : DMA requested
0 : Disabled
1 : Enabled
0 : Fixed
1 : Forward
DMA enable bit
Source address direction
select bit (Note 2)
Destination address
direction select bit (Note 2)
0 : Fixed
1 : Forward
DSD
DAD
Nothing is assigned. When write, set to “0”. When
read, its content is “0”.
Note 1: The DMAS bit can be set to “0” by writing “0” in a program (This bit remains unchanged even if “1” is written).
Note 2: At least one of the DAD and DSD bits must be “0” (address direction fixed).
(Note 1)
DMA1 request cause select register
Symbol
Address
After reset
DM1SL
03BA16
0016
Function
Bit symbol
b7
b6
b5
b4
b3
b2
b1
b0
DMA request cause
select bit
DSEL0
RW
DSEL1
DSEL2
DSEL3
Software DMA
request bit
DSR
DSEL3 to DSEL0
DMS=0(basic cause of request)
DMS=1(extended cause of request)
0 0 0 02
Falling edge of INT1 pin
–
0 0 0 12
Software trigger
–
0 0 1 02
Timer A0
–
0 0 1 12
Timer A1
–
0 1 0 02
Timer A2
–
0 1 0 12
Timer A3
SI/O3
0 1 1 02
Timer A4 (Note 3)
SI/O4
0 1 1 12
Timer B0
Two edges of INT1
1 0 0 02
Timer B1
–
1 0 0 12
Timer B2 (Note 2)
–
1 0 1 02
UART0 transmit
–
1 0 1 12
UART0 receive/ACK0
–
1 1 0 02
UART2 transmit
–
1 1 0 12
UART2 receive/ACK2
–
1 1 1 02
A/D conversion
–
1 1 1 12
UART1 receive/ACK1
–
Bit name
DMA request cause
expansion select bit
DMS
RW
(b5-b4)
RW
(b7-b6)
Note 1: The causes of DMA1 requests can be selected by a combination of DMS bit and DSEL3 to DSEL0 bits in the
manner described below.
Nothing is assigned. When write, set to “0”.
When read, its content is “0”.
A DMA request is generated by
setting this bit to “1” when the DMS
bit is “0” (basic cause) and the
DSEL3 to DSEL0 bits are “00012”
(software trigger).
The value of this bit when read is “0” .
0: Basic cause of request
1: Extended cause of request
Refer to note
Note 2: Please change SECINTi (i = 0 to 3) in address 3616 enhancing registers of the enhanced feature to the following settings
when you use the DMA forwarding by timer B2 interrupt request.
SECINTi = 00002
The DMA forwarding by the clock timer interrupt request cannot be used.
Note 3: Please change EXTIICINTi (i = 0 to 3) in address 02D616 I2C0 interrupt control register to the following settings when you
use the DMA forwarding by timer A4 interrupt request.
EXTIICINTi = 00002
The DMA forwarding by the Multi-master I2C interrupt request cannot be used.
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