at32uc3b0512-z2ues ATMEL Corporation, at32uc3b0512-z2ues Datasheet - Page 229

• Manufacturer Part Number: at32uc3b0512-z2ues
• Description: 32-bit Avr Microcontroller
• Manufacturer: ATMEL Corporation

19.11 Using the Peripheral DMA Controller
19.11.1
19.11.2
32059J–12/2010
Data Transmit with the Peripheral DMA Controller
Data Receive with the Peripheral DMA Controller
The use of the Peripheral DMA Controller significantly reduces the CPU load.
To assure correct implementation, respect the following programming sequences:
1. Initialize the Peripheral DMA Controller TX channel (memory pointers, size, etc.).
2. Configure the master mode (DADR, CKDIV, etc.).
3. Start the transfer by setting the Peripheral DMA Controller TXEN bit.
4. Wait for the Peripheral DMA Controller end TX flag.
5. Disable the Peripheral DMA Controller by setting the Peripheral DMA Controller TXDIS
1. Initialize the Peripheral DMA Controller TX channel (memory pointers, size, etc.).
2. Configure the master mode (DADR, CKDIV, etc.).
3. Start the transfer by setting the Peripheral DMA Controller RXEN bit.
4. Wait for the Peripheral DMA Controller end RX flag.
5. Disable the Peripheral DMA Controller by setting the Peripheral DMA Controller RXDIS
bit.
bit.
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