The McSPI modules include the following main features:

• Serial clock with programmable frequency, polarity, and phase for each channel

• Wide selection of SPI word lengths, ranging from 4 to 32 bits

• Up to four channels in controller mode, or single channel in receive mode

• Controller multichannel mode:

  • Full duplex/half duplex

  • Transmit-only/receive-only/transmit-and-receive modes

  • Flexible input/output (I/O) port controls per channel

  • Programmable clock granularity

  • Per channel configuration for clock definition, polarity enabling, and word width

• Single interrupt line for multiple interrupt source events

• Enable the addition of a programmable start-bit for McSPI transfer per channel (start-bit mode)

• Supports start-bit write command

• Supports start-bit pause and break sequence

• Programmable shift operations (1-32 bits)

• Programmable timing control between chip select and external clock generation

• Built-in FIFO available for a single channel