双端口存储器IDT7025信号量机制在双余度系统中的实现

摘要

Many data exchange is needed in redundant control system.Traditional design use parallel-port or serial-port,they can't meet Speed and reliability.Dual-ported ram suite to applications demanding the highest level of performance and reliability because of semaphore and two independedent ports with separate control,address and IO. So dual-ported ram is widely used in application of redundant control system.%在双余度控制系统中需要频繁的大量数据交换,传统的并行接口和串行接口设计无论在通信速率,还是在可靠性方面都不易满足要求.而双端口RAM提供2套独立的地址,控制,数据线,同时提供信号量机制,是一个较好的实现方案.它具有通讯速率高、接口设计简单等特点,因而能在这类设计中得到广泛的应用.