SLASFA2 November 2024 MSPM0G3519
ADVANCE INFORMATION
The direct memory access (DMA) controller allows movement of data from one memory address to another without CPU intervention. For example, the DMA can be used to move data from ADC conversion memory to SRAM. The DMA reduces system power consumption by allowing the CPU to remain in low power mode, without having to awaken to move data to or from a peripheral.
The DMA in these devices support the following key features:
Table 8-2 lists the available triggers for the DMA which are configured using the DMATCTL.DMATSEL control bits in the DMA memory mapped registers.
DMACTL.DMATSEL | Trigger Source | DMACTL.DMATSEL | Trigger Source |
---|---|---|---|
0 | Software | 17 | SPI2 Publisher 2 |
1 | Generic Subscriber (FSUB_0) | 18 | UART3 Publisher 1 |
2 | Generic Subscriber (FSUB_1) | 19 | UART3 Publisher 2 |
3 | AESADV Publisher 1 | 20 | UART4 Publisher 1 |
4 | AESADV Publisher 2 | 21 | UART4 Publisher 2 |
5 | DAC0 Publisher 2 | 22 | UART5 Publisher 1 |
6 | I2C0 Publisher 1 | 23 | UART5 Publisher 2 |
7 | I2C0 Publisher 2 | 24 | UART6 Publisher 1 |
8 | I2C1 Publisher 1 | 25 | UART6 Publisher 2 |
9 | I2C1 Publisher 2 | 26 | UART0 Publisher 1 |
10 | I2C2 Publisher 1 | 27 | UART0 Publisher 2 |
11 | I2C2 Publisher 2 | 28 | UART7 Publisher 1 |
12 | SPI0 Publisher 1 | 29 | UART7 Publisher 2 |
13 | SPI0 Publisher 2 | 30 | UART1 Publisher 1 |
14 | SPI1 Publisher 1 | 31 | UART1 Publisher 2 |
15 | SPI1 Publisher 2 | 32 | ADC0 DMA Trigger |
16 | SPI2 Publisher 1 | 33 | ADC1 DMA Trigger |