一种基于LVDS高速传输的接口优化设计

发布时间：2018-02-20 21:20

本文关键词： LVDS 高速传输驱动器均衡器丢数　出处：《电测与仪表》2016年20期 　论文类型：期刊论文

【摘要】：针对目前LVDS(Low Voltage Differential Signal)在高速传输过程中容易出现的误码和丢数现象,分别从硬件和逻辑两方面对传输接口进行了优化设计。硬件方面,在发送端增加高速驱动器,驱动双绞线电缆,同时在接收端采用均衡器,补偿信号在长距离传输过程中出现的衰减;逻辑方面,通过增加标志位避免失锁,减少数据发生误码和丢数问题。优化后的LVDS接口,相比于RS-232和RS-485接口,具有更高的通信速率,同时达到更远的通信距离,该接口设计简易,低功耗,性能稳定,无误码和丢数现象,经测试,优化后的LVDS接口,能以120 Mbps的通信速率实现48 m双绞长线稳定可靠传输。
[Abstract]:In view of the error rate and loss of number in the high speed transmission process of LVDS(Low Voltage Differential signal, this paper optimizes the design of transmission interface from two aspects of hardware and logic. In hardware, high speed driver is added to the transmitter. Driving twisted-pair cable, at the same time using equalizer at the receiving end to compensate for the attenuation of the signal during the long distance transmission. Compared with RS-232 and RS-485 interface, the optimized LVDS interface has higher communication rate and longer communication distance. The interface is easy to design, low power consumption and stable performance. After testing, the optimized LVDS interface can realize stable and reliable transmission of 48m twisted-stranded wire at a communication rate of 120 Mbps.
【作者单位】：中北大学仪器科学与动态测试教育部重点实验室;
【基金】：国家自然科学基金资助项目(51225504)
【分类号】：TP334.7

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