参数资料
型号: MSP430F5509IRGZR
厂商: TEXAS INSTRUMENTS INC
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 25 MHz, RISC MICROCONTROLLER, PQCC48
封装: PLASTIC, VQFN-48
文件页数: 19/99页
文件大小: 1134K
代理商: MSP430F5509IRGZR
PRODUCTPREVIEW
MSP430F550x
SLAS645B – JULY 2009 – REVISED JULY 2010
www.ti.com
DMA Controller
The DMA controller allows movement of data from one memory address to another without CPU intervention. For
example, the DMA controller can be used to move data from the ADC10_A conversion register to RAM. Using
the DMA controller can increase the throughput of peripheral modules. The DMA controller reduces system
power consumption by allowing the CPU to remain in sleep mode, without having to awaken to move data to or
from a peripheral.
The USB timestamp generator also utilizes the DMA trigger assignments described in Table 12.
Table 12. DMA Trigger Assignments(1)
CHANNEL
TRIGGER
0
1
2
0
DMAREQ
1
TA0CCR0 CCIFG
2
TA0CCR2 CCIFG
3
TA1CCR0 CCIFG
4
TA1CCR2 CCIFG
5
TA2CCR0 CCIFG
6
TA2CCR2 CCIFG
7
TB0CCR0 CCIFG
8
TB0CCR2 CCIFG
9
Reserved
10
Reserved
11
Reserved
12
Reserved
13
Reserved
14
Reserved
15
Reserved
16
UCA0RXIFG
17
UCA0TXIFG
18
UCB0RXIFG
19
UCB0TXIFG
20
UCA1RXIFG
21
UCA1TXIFG
22
UCB1RXIFG
23
UCB1TXIFG
24
ADC10IFG0(2)
25
Reserved
26
Reserved
27
USB FNRXD
28
USB ready
29
MPY ready
30
DMA2IFG
DMA0IFG
DMA1IFG
31
DMAE0
(1)
If a reserved trigger source is selected, no Trigger1 is generated.
(2)
Only on devices with ADC. Reserved on devices without ADC.
26
Copyright 2009–2010, Texas Instruments Incorporated
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