Edge and data adaptive equalization of serial-link transceivers

被引：28

作者：

Wong, Koon-Lun Jackie ^{[1
]}

Chen, E-Hung ^{[2
]}

Yang, Chih-Kong Ken ^{[2
]}

机构：

[1] Broadcom Corp, Irvine, CA 92617 USA

[2] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2008年 / 43卷 / 09期

关键词：

bit-error rate; CDR; equalizer; I/O link; ISI; LMS adaptation;

D O I：

10.1109/JSSC.2008.2001876

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Limited channel bandwidth introduces inter-symbol interference (ISI) at both data and edge samples. In addition to the ISI at data samples, ISI at the edge samples (edge ISI) increases the bit error rate (BER) by degrading on the eye diagram and increasing the jitter of the clock and data recovery (CDR). This work proposes a forward FIR equalizer and a decision-feedback equalizer (DFE) that compensate for both data and edge samples. To adapt both the data and edge equalizers, a modified LMS adaptation algorithm is introduced to achieve convergence. A transmitter and receiver are implemented in 0.13 mu m and 0.18 mu m technologies respectively. The edge ISI is improved by 20% and the jitter is improved by 10% in measurement. The link operates over a 120 '' FR4 channel with 24 dB attenuation at Nyquist frequency, and the BER is below 10(-14) at 3.6 Gb/s.

引用

页码：2157 / 2169

页数：13

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