30.2 Overview

The serial peripheral interface (SPI) is one of the available modes in the Serial Communication Interface (SERCOM).

A SERCOM instance can be configured to operate either as an SPI host or an SPI client, as shown in the Block Diagram. Both the host and the client have an interface containing a shift register, a transmit buffer, and a receive buffer.

Additionally, the SPI host uses the SERCOM baud rate generator, while the SPI client uses the SERCOM address match logic.