2.7.2 AVR® Dx Additional Features

The SPI peripheral of the AVR Dx families has support for data buffering, thus influencing the data handling. The Buffer mode is enabled by writing the BUFEN bit in the SPIn.CTRLB register to ‘1’. There are additional bits in the SPI.INTCTRL and SPI.INTFLAGS registers to support Buffer mode. Refer to the specific AVR Dx data sheet for details.

Note: For more details about using the SPI and code examples, refer to TB3215 - Getting Started with SPI.

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