Design of a 100+ Meter 12Gb/s/Lane Copper Cable Link Based on Clock-Forwarding
Aug 06, 2012
from 09:00 AM to 11:00 AM
|Where||ENGR. IV Bldg. Maxwell Room 57-124|
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Advisor: Professor Chih-Kong Ken Yang
As data centers are expected to manage the increasing demands in bandwidth, processing power and storage requirements, connectivity issues between servers and racks present a whole new set of challenges in maintaining a stable infrastructure. While data centers may grow to occupy thousands of square feet, current passive copper interconnects pose a real limitation with a run length of 10 meters at 10Gbps per wire pair. Optical fiber can extend the interconnection length from 10 meters hundreds of meters, but the large power requirements and expensive opto-electric modules prove to be too uneconomical for practical application. In this work, a 12Gbps cable link is presented that would extend the range of copper interconnects beyond the 100 meter threshold. The link uses repeaters in a clock forwarded topology to achieve desired performance. The design space of the complexity of the repeaters, number of repeaters, frequency of the forwarded clock is explored in terms of metrics such as power consumption and signal noise.
Tamer Ali had his bachelors and masters degree from Ain Shams university, Cairo, Egypt (2000, 2006), and currently a Phd. Candidate at UCLA EE dept. He worked as RF IC and analog/mixed-signal designer. He’s currently a senior staff at Broadcom optical and SERDES group. Tamer research interests include receiver design, clocking and timing recovery for wireline applications.