at91sam9g25-cu ATMEL Corporation, at91sam9g25-cu Datasheet - Page 30

• Manufacturer Part Number: at91sam9g25-cu
• Description: At91sam Arm-based Embedded Mpu
• Manufacturer: ATMEL Corporation

6.9
30
DMA Controller 1
SAM9G25
The DMA controller can handle the transfer between peripherals and memory and so receives
the triggers from the peripherals below. The hardware interface numbers are also given in
Table 6-4.
Instance name
HSMCI1
SPI1
SPI1
SMD
SMD
TWI1
TWI1
ADC
DBGU
DBGU
UART1
UART1
USART2
USART2
USART3
USART3
• Two Masters
• Embeds 8 channels
• 16-byte FIFO per Channel
• features:
– Linked List support with Status Write Back operation at End of Transfer
– Word, HalfWord, Byte transfer support.
– Peripheral to memory
– Memory to peripheral
DMA Channel Definition
T/R
RX/TX
TX
RX
TX
RX
TX
RX
RX
TX
RX
TX
RX
TX
RX
TX
RX
DMA Channel HW
interface Number
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
11032AS–ATARM–27-Jul-11
Table