Cyclone® V Hard Processor System Technical Reference Manual

ID 683126
Date 8/28/2023
Public
Document Table of Contents

2.2.8.6. SPI Master Controllers

The two SPI master controllers are based on Synopsys* DesignWare* Synchronous Serial Interface (SSI) controller and offer the following features:
  • Choice of Motorola* SPI, Texas Instruments* Synchronous Serial Protocol or National Semiconductor* Microwire protocol
  • Programmable data frame size from 4 bits to 16 bits
  • Supports full- and half-duplex modes
  • Supports up to four chip selects
  • Direct access for host processor
  • DMA controller may be used for large transfers
  • Programmable master serial bit rate
  • Support for rxd sample delay
  • Transmit and receive FIFO buffers are 256 words deep