The [AM1808 SoC](EV3 Processor) has 2 hardware Serial Peripheral Interface Bus controllers (SPIs).
Note: CS stands for Chip Select, which allows more than one device to be connected to a bus.
##Usage SPI0:
- CS0: NAND Flash (Not implemented in ev3dev)
- CS3: [Analog/Digital converter](EV3 A|D Converter)
SPI1: (chip select not used)
- [LCD controller](EV3 LCD)