本spi参数化通讯模块是一个支持SPI串行通信协议从协议的SPI从接口。可通过改变参数设置传输的位数，由外部控制器给定脉冲控制传输。-The parameters of spi communication module is a support SPI serial communication protocol from the agreement from the SPI interface. By changing the parameter settings can be transmit

使用VHDL语言写的程序，利用SPI协议实现串并转换电路(Programs written in VHDL language and series-to-parallel conversion circuit implemented by SPI protocol)