原文链接:https://www.intel.com/content/www/us/en/docs/programmable/683711/21-2/features-of-the-spi-controller.html
20.1. Features of the SPI Controller
The SPI controller has the following features: †
Serial master and serial slave controllers – Enable serial communication with serial‑master or serial‑slave peripheral devices. †
Each SPI master has a maximum bit rate of 60Mbps
Each SPI slave has a maximum bit rate of 50Mbps
Serial interface operation – Programmable choice of the following protocols:
Motorola SPI protocol
Texas Instruments Synchronous Serial Protocol
National Semiconductor Microwire
DMA controller interface integrated with HPS DMA controller
SPI master supports received serial data bit (RXD) sample delay
Transmit and receive FIFO buffers are 256 words deep
SPI master supports up to four slave selects
Programmable master serial bit rate
Programmable data item size of 4 to 16 bits
Support for Multi-master mode