| Autor: |
Lijun Li, K. Ling, Tomasz Prokop, A. Sinha, R. Kothari, Hiroshi Kimura, Eric Zhang, Chaitanya Palusa, Freeman Zhong, Jen Dong, S. Lowrie, G. Hom, Hairong Gao, Tai Jing, Chintan Desai, Cathy Ye Liu, Ram Surya Narayan, Pervez M. Aziz, Wing Liu, M. Garcia, Amaresh V. Malipatil, T. Huynh, Shaolei Quan, A. Rajashekara, C. Zhong |
| Rok vydání: |
2011 |
| Předmět: |
|
| Zdroj: |
ISSCC |
| ISSN: |
0018-9200 |
| DOI: |
10.1109/jssc.2011.2168871 |
| Popis: |
A robust transceiver designed for NRZ signaling beyond 10Gb/s over long-range physical media (including electrical backplanes, copper cables and optical modules) must contend with significant challenges from insertion loss, crosstalk, and reflection. For inter-symbol interference (ISI) cancellation, half-rate decision-feedback equalizer (DFE) with unrolled first tap [1–3] is widely used to avoid noise amplification and to relax timing for data sampling/feedback. However, tap-unrolling increases slicer count and entails half-rate multiplexers eating into timing margin. To remove reflection-induced ISI due to impedance discontinuities in the media, the DFE must cover tap positions higher than 30UI which is beyond tap range of the DFEs reported in previous work [1–4]. Fig. 1 shows an example of bumpy channel with reflection energy up to 40UI. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
