一个简单的ＳＰＩ　ＩＰ核，SPI Core Specifications　可以从说明文档中找到！ The simple Serial Peripheral Interface core is an enhanced version of the Serial Peripheral Interface found on Motorola s M68HC11 family of CPUs. The Serial Peripheral Interface is a serial, synchron

uart协议、实现、验证，基于wishbone协议，工业标准为16550A-UART protocol, implementation, verification, based on the Wishbone protocol, the industry standard for the 16550A