40Gb/s甚短距离光传输系统的去斜移设计(本期优秀论文)  

Deskew design in 40Gb/s very short reach optical transmission system

作　　者：任滨[1] 王志功[1] 苗澎[1] 胡庆生[1] 

机构地区：[1]东南大学射频与光电集成电路研究所,南京210096

出　　处：《光通信技术》2008年第9期1-4,共4页Optical Communication Technology

基　　金：国家863计划(2006AA01Z239)资助

摘　　要：实现了串/并转换成帧器接口(SFI-5)的去斜移功能。该设计主要由去斜移通道的帧对齐模块和数据通道去斜移模块组成,其中的关键电路由窗口比较器与滑动窗口生成器配合工作实现。16个数据通道去斜移电路轮流工作,共用一个窗口比较器,提高了电路的工作速度,节省了资源。系统测试表明,该电路可纠正±160比特范围内的通道间斜移,可应用于40Gb/s甚短距离传输的VSR5系统。This paper presents the deskew function in Serdes Framer Interface Level 5 （SFI-5） interface realized in an FPGA. The design is mainly consisted of the flame aligner of deskew channel and data channel deskew modules, the key part of which depends on the window comparison and a slip-window generator. 16 data channel deskew circuits works in turn and share one window comparison, improving the IC working speed and reducing circuit complexity greatly. Aon-system test is implemented in one Altera EP1SGX40GF1020C6 FPGA, with an Agilent 1682A logic analyzer. The test result indicates that the circuit can correct the skew between channels up to ±160 bits both reliably and steadily, which can be applied in actual 40Gb/s very short reach communication systems.

关 键 词：SFI-5 VSR5 去斜移 帧对齐 窗口比较器 滑动窗口生成器 

分 类 号：TN914[电子电信—通信与信息系统]