摘要
针对OTN(光传送网)电路中传统异步FIFO(先入先出)的可能故障,提出一种适用于OTN电路的异步FIFO,该异步FIFO在出现空/满状态后会复位读/写地址,这样就不会影响电路的同时读写功能。用比较读写地址最高两位的方法来确定接近空或接近满指示信号,更容易判断异步FIFO的空/满状态。测试结果表明,所设计的FIFO的空/满复位功能正常,读写速率可达到133 MHz。
In view of the possible failures of the traditional asynchronous FIFO in OTN circuits,this paper proposes a kind of a-synchronous FIFO suitable for OTN circuits,in which reading/writing addresses will be reset when empty/full emerges in the asynchronous FIFO,without affecting the simultaneous read/write functions of the circuits.It is easier to judge whether the a-synchronous FIFO is in empty or full state by comparing the highest two read/write addresses to determine if the indicator sig-nal close to empty or to full.The test results show that the designed FIFO empty/full resetting function is normal and the read/write rate can reach up to 133 MHz.
出处
《光通信研究》
北大核心
2015年第5期55-58,共4页
Study on Optical Communications
