XPS Serial Peripheral Interface


Product Description

The XPS Serial Peripheral Interface (SPI) connects to the PLB (Processor Local Bus) and provides a serial interface to SPI devices such as SPI EEPROMs. The SPI protocol, as described in the Motorola M68HC11 data sheet, provides a simple method for a master and a selected slave to exchange data.

Key Features and Benefits

  • Connects as a 32-bit slave on PLB V4.6 buses of 32,
  • Supports four signal interface (MOSI, MISO, SCK and SS)
  • Supports slave select (SS) bit for each slave on the SPI bus
  • Supports full-duplex operation
  • Supports master and slave SPI modes
  • Supports programable clock phase and polarity
  • Optional transmit and receive FIFOs
  • Optional transmit and receive FIFOs scanning of a peripheral
  • Supports back-to-back transactions
  • Supports automatic or manual slave select modes
  • Supports local loopback capability for testing



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