Title | ||
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10.4 A 5.8Gb/s adaptive integrating duobinary-based DFE receiver for multi-drop memory interface |
Abstract | ||
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Emerging applications like cloud computing require high-speed low-latency access to high-volume data. In these applications, use of memory modules having multi-drop channels may be needed for time-efficient access to high-density memory data. A key design issue here is how to let interface transceivers not be affected by ISI and reflection noise generated by multi-drop channels having imperfect termination. The current-integrating decision-feedback equalizer (DFE) [1], which can cancel both high-frequency noise and post-cursor ISI simultaneously, has a limitation due to high gain-boosting and/or tap weight over-emphasis in equalizers to avoid eye closure caused by ISI-referred input pattern dependency. Duobinary signaling [2], which requires less boosting for equalizers by taking advantage of channel roll-off characteristic, is not effective in a multi-drop channel application because even a small timing or waveform variation due to high-frequency noise may cause degradation of the quality of duobinary signals. This work presents an integrating duobinary-based DFE receiver to avoid drawbacks described above and to increase the effective-data rate of multi-drop channels. A synergistic combination between the integrating equalizer and the duobinary signaling can provide advantages such as 1) lower gain-boosting for equalizers, 2) no need for precursor equalization, 3) ideally no input-pattern dependency during integration, 4) being more robust to high-frequency noise, 5) alleviated DFE critical timing, and 6) embedding DFE taps into duobinary circuits. |
Year | DOI | Venue |
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2015 | 10.1109/ISSCC.2015.7062986 | ISSCC |
Keywords | Field | DocType |
integrated memory circuits,multidrop memory interface,bit rate 5.8 gbit/s,circuit noise,duobinary signaling,integrating equalizer,adaptive integrating duobinary-based dfe receiver,tap weight,current-integrating decision-feedback equalizer,channel roll-off characteristic,receivers,decision feedback equalisers,high gain-boosting,input-pattern dependency,decoding,noise,reflection | Transceiver,Equalization (audio),Computer science,Waveform,Communication channel,Electronic engineering,Boosting (machine learning),Decoding methods,Electronic circuit,Cloud computing | Conference |
Citations | PageRank | References |
2 | 0.47 | 2 |
Authors | ||
8 |
Name | Order | Citations | PageRank |
---|---|---|---|
Hyun-Wook Lim | 1 | 4 | 0.86 |
Sung-Won Choi | 2 | 10 | 2.81 |
Sang-Kyu Lee | 3 | 4 | 0.86 |
Chang-Hoon Baek | 4 | 4 | 0.86 |
Jae-Youl Lee | 5 | 29 | 7.11 |
Gyoocheol Hwang | 6 | 34 | 8.51 |
Bai-Sun Kong | 7 | 153 | 31.93 |
Young-Hyun Jun | 8 | 60 | 11.41 |