19.8.4 Quick Start Guide for SERCOM SPI Slave - Callback

In this use case, the SPI on extension header 1 of the Xplained Pro board will configured with the following settings:

  • Slave mode enabled

  • Preloading of shift register enabled

  • MSB of the data is transmitted first

  • Transfer mode 0

  • SPI MUX Setting E (see Slave Mode Settings)

  • 8-bit character size

  • Not enabled in sleep mode

  • GLCK generator 0