Adaptive equalizer design based on CSPI protocol

Bin ZHAO; Yu-hua ZHANG; Zhao WANG; Feng-cheng XU

doi:10.37188/CJLCD.2020-0147

您当前的位置：

首页 >

文章列表页 >

Adaptive equalizer design based on CSPI protocol

Driving & Controlling | 更新时间：2021-02-07

- Adaptive equalizer design based on CSPI protocol
- Chinese Journal of Liquid Crystals and Displays Vol. 36, Issue 2, Pages: 279-286(2021)
- 作者机构：
  
  1.华南理工大学电子与信息学院, 广东广州 510640
  2.TCL华星光电技术有限公司, 广东深圳 518107
- 作者简介：
- 基金信息：
- DOI：10.37188/CJLCD.2020-0147
  CLC： TN919
- Received：11 June 2020，
  
  Revised：06 September 2020，
  
  Accepted：06 September 2020，
  
  Published：2021-02
- 稿件说明：
移动端阅览
Bin ZHAO, Yu-hua ZHANG, Zhao WANG, et al. Adaptive equalizer design based on CSPI protocol[J]. Chinese journal of liquid crystals and displays, 2021, 36(2): 279-286.
DOI：

Bin ZHAO, Yu-hua ZHANG, Zhao WANG, et al. Adaptive equalizer design based on CSPI protocol[J]. Chinese journal of liquid crystals and displays, 2021, 36(2): 279-286. DOI： 10.37188/CJLCD.2020-0147.

摘要

为了解决高速传输速率下信号在信道传输中遇到的衰减问题，本文介绍一种工作在1.5 GHz下，使用误差反馈的Rx（Receiver）端自适应均衡器设计。为缩短收敛时间，应用了基于离散信号处理的均衡器。二进制随机序列（PRBS）作为训练数据，首先进入均衡滤波器以获得高频增益补偿，然后在采样分割单元被采样并获得陡峭的上升下降特性，最后进入到比较器中。与传统比较器原理不同，该比较器具有内部寄存器用来存储输入信号，将其与期望值比较返回误差。误差通过反馈回路对增益系数进行提升，不断迭代获得可用增益值，从这些可用值中取中位数作为最优增益。若无法找到合适增益值，将向发送器Tx（Transmitter）传输信号增加预加重增益，然后接收器Rx再次进行自适应迭代。最后，向Tx反馈增益系数。增益补偿范围为1~16 dB。该设计在使用CSPI协议的165.1 cm（65 in）8 K机种上实验，在Tx读取的反馈值证实了设计的有效性。满足在高传输速率下，Rx能够不失真地接收并还原CSPI协议数据。

Abstract

In order to solve the signal attenuation through channel at high data rate

a 1.5 GHz adaptive equalizer using error feedback at Rx(Receiver) is introduced. An equalizer based on discrete signal process is applied to reduce convergence time. Firstly

PRBS used as the training data will be transported to the equalizer filter for high frequency compensation. Then it is sampled and sliced by the S/H circuit and slicer to obtain steep rising and falling characteristics. Finally

it is sent to a comparator which is different with conventional comparator. There is an internal register in proposed comparator to store input signal. Error between input and desired value will be fed back through the closed loop to increase equalizer boosting gain. After several times iteration

useable gains are acquired and the median is selected as the optimal gain. If no suitable gain is found

Tx(Transmitter) will increase pre-emphasis setting and adaptive iteration progress at Rx repeats. Finally

the setting gain will be sent to inform Tx. The compensation range is from 1 to 16 dB. An experiment at 165.1 cm(65 in) 8 K module using CSPI protocol is carried out

where the validity of the proposed design is verified by feedback setting at Tx. The requirement that CSPI protocol data could be received and recovered without distortion by Rx at high data rate is met.

关键词

Keywords

references

赵斌 , 周明忠 , 张裕桦 , 等 . 薄膜晶体管液晶显示器的点对点传输协议 . 液晶与显示 , 2020 . 35 ( 4 ): 334 - 340 . http://cjlcd.lightpublishing.cn/thesisDetails?columnId=1398625&Fpath=&index=-1&l=zh http://cjlcd.lightpublishing.cn/thesisDetails?columnId=1398625&Fpath=&index=-1&l=zh .

B ZHAO , M Z ZHOU , Y H ZHANG , 等 . Point-to-point interface protocol for thin film transistor-liquid crystal display . Chinese Journal of Liquid Crystals and Displays , 2020 . 35 ( 4 ): 334 - 340 . http://cjlcd.lightpublishing.cn/thesisDetails?columnId=1398625&Fpath=&index=-1&l=zh http://cjlcd.lightpublishing.cn/thesisDetails?columnId=1398625&Fpath=&index=-1&l=zh .

W J DALLY , J POULTON . Transmitter equalization for 4-Gbps signaling . IEEE Micro , 1997 . 17 ( 1 ): 48 - 56 . DOI: 10.1109/40.566199 http://doi.org/10.1109/40.566199 .

R FARJAD-RAD , C K K YANG , M A HOROWITZ , 等 . A 0.4- μ m CMOS 10-Gb/s 4-PAM pre-emphasis serial link transmitte . IEEE Journal of Solid-State Circuits , 1999 . 34 ( 5 ): 580 - 585 . DOI: 10.1109/4.760366 http://doi.org/10.1109/4.760366 .

GOTOH K, TAMURA H, TAKAUCHI H, et al . A 2B parallel 1.25 Gb/s interconnect I/O interface with self-configurable link and plesiochronous clocking[C]// Proceedings of 1999 IEEE International Solid-State Circuits Conference. Digest of Technical Papers . San Francisco, CA, USA: IEEE, 1999: 180-181.

Y KUDOH , M FUKAISHI , M MIZUNO . A 0.13- μ m CMOS 5-Gb/s 10-m 28AWG cable transceiver with no-feedback-loop continuous-time post-equalizer . IEEE Journal of Solid-State Circuits , 2003 . 38 ( 5 ): 741 - 746 . DOI: 10.1109/JSSC.2003.810029 http://doi.org/10.1109/JSSC.2003.810029 .

HWANG S, JUNG I, SONG J, et al . A 5.4 Gb/s adaptive equalizer with unit pulse charging technique in 0.13 μ m CMOS[C]// Proceedings of 2012 IEEE International Symposium on Circuits and Systems . Seoul, South Korea: IEEE, 2012: 1959-1962.

SEO J C, KIM T H, AN T J, et al . A high-speed adaptive linear equalizer with ISI level detection using periodic training pattern[C]// Proceedings of 2012 International SoC Design Conference . Jeju Island, South Korea: IEEE, 2012: 419-422.

M H SHAKIBA . A 2.5 Gb/s adaptive cable equalize . Digest of Technical Papers of the Solid State Circuits Conference , 1999 . 1 ( 1 ): 396 - 397 .

J S CHOI , M S HWANG , D K JEONG . A 0.18- μ m CMOS 3.5-Gb/s continuous-time adaptive cable equalizer using enhanced low-frequency gain control method . IEEE Journal of Solid-State Circuits , 2004 . 39 ( 3 ): 419 - 425 . DOI: 10.1109/JSSC.2003.822774 http://doi.org/10.1109/JSSC.2003.822774 .

C S YEN , Z FAZARINC , R L WHEELER . Time-domain skin-effect model for transient analysis of lossy transmission . Proceedings of the IEEE , 1982 . 70 ( 7 ): 750 - 757 . DOI: 10.1109/PROC.1982.12381 http://doi.org/10.1109/PROC.1982.12381 .

CAO W D, WANG Z Q, LI D M, et al . A 40 Gb/s adaptive equalizer with amplitude approaching technique in 65nm CMOS[C]// Proceedings of IEEE International Conference on Electron Devices and Solid-State Circuits . Singapore: IEEE, 2015.

Views

130

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

No data

Related Author

Bin ZHAO

Yu-Hua ZHANG

Zhao WANG

Feng-Cheng XU

Related Institution

College of Electronic and Information Engineering， South China University of Technology

Shenzhen China Star Optoelectronics Technology Co.， Ltd.

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China 130033 Postal code：130033
Tel：0431-86176059 Email：yjxs@ciomp.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰