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A 5-Gb/s Adaptive CTLE with Eye-Monitoring for Multi-Drop Bus ApplicationsAuthors: somanshu.agarwal@students.iiit.ac.in ,P Vijaya Sankara Rao Conference: IEEE International Midwest Symposium on Circuits and Systems 2014 (MWSCAS 2014 2014) Date: 2014-08-03 Report no: IIIT/TR/2014/60 AbstractOn-chip data processing capabilities have increased very rapidly over the last decades creating off-chip bandwidth a strong limiting factor. Limitations of this off-chip communication originate from interconnect, vias and connectors leading to reflections over chip-to-chip interconnect and leads to intersymbol interference. These variations dynamically change based on interconnect length, number of vias and connectors, needing adaptive equalization. This scenario becomes worse and unpredictable in a multi-drop bus environment, leading to complete eye closure. In this work, we propose a 5 Gb/s adaptive continuous time linear equalizer (CTLE) with eye-monitoring in a multi-drop bus environment. The coefficients of CTLE are adjusted to compensate the channel nonlinearities based on the feedback received from the eye-monitoring device. Adaptive CTLE is designed in 1.8V, 0.18𝜇m CMOS technology for 5 Gb/s data transmission over a 7.5 inch FR4 PCB trace. The power consumed by adaptive CTLE is 18mW for a bit error rate of 10−12 . Full paper: pdf Centre for VLSI and Embeded Systems Technology |
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