| SDH传输系统中帧定位电路设计 |
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| 引用本文： | 吕瑾,徐东明,张云军. SDH传输系统中帧定位电路设计[J]. 中国集成电路, 2010, 19(10): 50-53,26 |
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| 作者姓名： | 吕瑾 徐东明 张云军 |
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| 作者单位： | [1]西安邮电学院通信工程系,陕西西安710061 [2]西安邮电学院通信工程系,陕西西安7l0061 [3]西安深亚电子有限责任公司,陕西西安710061 |
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| 摘 要： | 为了更加有效与便捷地识别SDH（Synchronous digital hierarchy,同步数字体系）中帧的起始位置,保证帧同步的正确性,提出了一种SDH传输系统中帧定位电路的设计方法。通过反复调用模块与指示帧告警信号相结合的方法,防止帧定位产生伪同步与真失步现象。并采用Veri l og语言对设计进行了RTL级的描述、仿真和综合,最终以ASIC方式得到实现。该设计方法与传统设计方法相比,更加方便简洁地实现了较复杂的帧定位过程。实验证明该设计能够完成帧定位的过程。
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| 关 键 词： | SDH 帧定位 同步状态 帧丢失 |
Design of Frame synchronous Circuit in SDH transmission system |
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| LV Jin,XU Dong-ming,ZHANG Yun-jun. Design of Frame synchronous Circuit in SDH transmission system[J]. China Integrated Circuit, 2010, 19(10): 50-53,26 |
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| Authors: | LV Jin XU Dong-ming ZHANG Yun-jun |
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| Affiliation: | 1.Xi＇ an University of Posts and Telcommunications Xi＇ an 710061; 2.Xi＇an University of Posts and Telcommunications Xi＇an 710061; 3.Xi＇ an Supermicro Electronics Co., LTD Xi＇ an 710061 ) |
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| Abstract: | In order to identify at the begin position of frame for frame synchronous effectively and expdeintly.The article introduce a piece of frame synchronous circuit method in SDH system. The text transfer to module and denote alarm signal,which avoid to fake synchronization and asynchronization phenomenon. Furthermore design circuits in RTL level and Verilog lanuage.According to simulate, synthesize,actualize ASIC at last, which demonstrate that the design achieved the aim.Compare to traditional method, the method can realize frame synchronous effectively. Finally, the experiment can achieve the course of frame synchronization. |
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| Keywords: | SDH frame synchronous synchronous state lose of frame |
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