多通道俄制军用串行总线FPGA的IP核设计

介绍了俄罗斯军用标准ΓОСТ18977和PTM1495.重点进行了IP核总体设计,收发通道和CPU接口的详细设计,通过设置控制、状态等多功能寄存器实现各通道独立工作,软件设计采用状态机保证了协议通信的正确性,并在Quartus Ⅱ 5.0集成开发环境下予以实现.经验证用本方法设计的IP核能很好地实现8通道同时收发的功能,且各个通道能独立设置通信频率、奇偶校验等,解决了以往该类芯片通道少、功能单一的缺点.

IP core design of Russian military multi-channel serial bus based on FPGA

Russia military standard FOCT18977 and PTM1495 are introduced. The structure of IP core and design of sending channel, receiving channel and CPU interface are introduced. By setting of multi - function registers, such as control and status registers, each channel may work independently. State - ma- chine program is used to ensure accurate communication,and the application is designed with QuartusH5.0 IDE. The results of test show that this IP core can satisfy 8 Rx and 8 Tx channels at the same time, each channel can set communication frequency and parity check etc independently. Thus the disadvantages of such chips are overcome.