基于FPGA的闰年自动识别IRIG_B码的设计

The design of automatic identification IRIG_B of the leap year based on FPGA

利用先进的可编程逻辑器件——FPGA,根据国际中IRIG_B码的定义,采用verilog语言进行代码编写.经过细腻的分析判断,把复杂的乘法运算判断变为简单的加法运算.利用加法运算,实现闰年的自动识别.经过在isplevel平台上面的测试仿真,验证生成的IRIG_B码具有闰年自动识别的功能.方法简单,准确率高,生成的IRIG_B满足时钟同步要求.

According to the definition of an international IRIG_B code, used advanced programmable logic devices-FPGA and the verilog language were used to compose codes. After a delicate analysis determine, the complex multiplication was transferred into a simple addition. The addition operations achieved the automatic recognition of leap year. The simulation tests on the isp-level platform verified the function of automatic recognition of leap year. The method is simple and accurate. The resulted IRIG_B meets requirement of timing synchronization.