用于SoC的SPI接口设计与验证

摘要

The RTL design and functional simulation of SPI IP core applied to SoC design is presented in this paper. The AMBA 2.0 bus standards is adopted to achieve the communication between the peripheral devices and the internal system through SPI. As fore data transmission section,the traditional design method was abandoned,which needs a specific shift regis-ter for serial/parallel transfer. The shifting transmission register and receive register are put together by the reuse registers to im-prove the speed and save the hardware resources. IP is verified with an SoC verification platform under SoC environment. The re-sults of simulation at the clock frequency of 100 MHZ show that the design can achieve data transmission and meet the require-ments of time-sequence design.%给出了一个可用于SoC设计的SPI接口IP核的RTL设计与功能仿真。采用AMBA 2.0总线标准来实现SPI接口在外部设备和内部系统之间进行通信，在数据传输部分，摒弃传统的需要一个专门的移位传输寄存器实现串/并转换的设计方法，采用复用寄存器的方法，把移位传输寄存器和发送寄存器结合在一起，提高了传输速度，也节约了硬件资源。采用SoC验证平台进行SoC环境下对IP的验证，在100 MHz时钟频率下的仿真和验证结果表明，SPI接口实现了数据传输，且满足时序设计要求。