一种有效的FIFO复位策略

介绍了一种有效的FIFO复位策略。在逻辑设计中,经常需采用FIFO来缓存数据包。当系统发生异常时,FIFO有可能出现如丢包后数据包对应关系错乱且不可恢复问题,此时,为了用最小的代价使得整个逻辑恢复正常,通常采用软件控制复位FIFO来解决。但由于软件复位FIFO时是随机的,复位有可能发生在数据包传递过程中,造成不完整的数据包写入FIFO,而导致新的不可恢复故障。因此,有必要针对复位FIFO操作进行相应处理,以达到正确复位的目的。

An Effective FIFO Reset Strategy

An effective strategy for FIFO reset is introduced. In logical design,the FIFO is used for data storage. When the system is abnormal,FIFO may drop packet and cannot recover,in which case a soft FIFO reset is often used to to save the system at minimum cost. But the random FIFO reset may occur in the data packet processing,leading to incomplete packet writing into FIFO and thus system failure. Therefore a good FIFO reset strategy is necessary.