Datasheet

MSP430F6638, MSP430F6637, MSP430F6636
MSP430F6635, MSP430F6634, MSP430F6633
MSP430F6632, MSP430F6631, MSP430F6630
www.ti.com SLAS566D –JUNE 2010–REVISED AUGUST 2013
DMA Controller (Link to User's Guide)
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 ADC12_A conversion memory 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 uses the channel 0, 1, and 2 DMA trigger assignments described in
Table 14.
Table 14. DMA Trigger Assignments
(1)
Channel
Trigger
0 1 2 3 4 5
0 DMAREQ
1 TA0CCR0 CCIFG
2 TA0CCR2 CCIFG
3 TA1CCR0 CCIFG
4 TA1CCR2 CCIFG
5 TA2CCR0 CCIFG
6 TA2CCR2 CCIFG
7 TBCCR0 CCIFG
8 TBCCR2 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 ADC12IFGx
(2)
25 DAC12_0IFG
(3)
26 DAC12_1IFG
(3)
27 USB FNRXD
28 USB ready
29 MPY ready
30 DMA5IFG DMA0IFG DMA1IFG DMA2IFG DMA3IFG DMA4IFG
31 DMAE0
(1) Reserved DMA triggers may be used by other devices in the family. Reserved DMA triggers will not
cause any DMA trigger event when selected.
(2) Only on devices with peripheral module ADC12_A. Reserved on devices without ADC.
(3) Only on devices with peripheral module DAC12_A. Reserved on devices without DAC.
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