摘要
PMC4351是PMC公司一款功能强大的集成了收发单元的可编程全功能E1、T1成帧器。它可在2M误码测试仪中实现2M数字口的所有测试功能,包括HDB3、AMI编解码、时钟提取,各种帧结构信号、各种测试图案和各种报警信号的产生和检测等。文中给出了PMC4351在2M误码测试仪中的工作原理及应用电路,论述了2M误码测试仪系统软件,并给出了PMC4351的初始化程序。
PMC4351 is a monolithic device which integrates software selectable full-featured T1 and E1 framers.It can do all measure work of 2M digital interface.It can provide encoding and decoding of HDB3 and AMI line codes,clock recovery, all style programmable framers signals, test designs and alarm generation and detection.This paper introduces its operation principle and application circuit in 2M measure instrument , and provides the software of 2M measure instrument system and initiation programme of PMC4351.
出处
《国外电子元器件》
2005年第8期14-17,共4页
International Electronic Elements
