基于CPLD的双口RAM在WDM-EPON接口盘中的实现与应用

Implementation and application of dual-port RAM based on CPLD in WDM-EPON card

介绍了在WDM-EPON接口盘中实现双CPU之间数据通信的双口RAM设计。采用复杂可编程逻辑器件(CPLD),用VerilogHDL语言实现双口RAM的设计,并在设计过程中采用数字逻辑方法解决了2个CPU对双口RAM同时进行写操作时产生冲突的问题,已在该接口盘上成功应用。

This paper describes the design of dual-port RAM which can realize data communication between two CPUs in WDM-EPON card.By virtue of complex programmed logical data（CPLD）,dual-port RAM is designed based on the Verilog HDL.In the designing process,the conflict of the two CPUs in writing operation at the same time is solved using the data logical method.This design is successfully applied in WDM-EPON card.