Crosstalk-Aware Transmitter Pulse-Shaping for Parallel Chip-to-Chip Links

Crosstalk and inter-symbol interface are major obstacles towards increasing the data rate of chip-to-chip links. They are especially important in long, single-ended, parallel links. We find that when crosstalk is the dominant source of received noise, a transmitted pulse shape that combines slew-rat...

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Bibliographic Details
Published in2007 IEEE International Symposium on Circuits and Systems (ISCAS) pp. 189 - 192
Main Authors Bichan, Mike, Carusone, Anthony Chan
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2007
Subjects
Crosstalk
Filters
Interference
Microstrip
Noise shaping
Pulse measurements
Pulse shaping methods
Shape measurement
Testing
Transmitters
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Summary:Crosstalk and inter-symbol interface are major obstacles towards increasing the data rate of chip-to-chip links. They are especially important in long, single-ended, parallel links. We find that when crosstalk is the dominant source of received noise, a transmitted pulse shape that combines slew-rate limiting with transmitter pre-emphasis is preferred. We present a framework for choosing a transmit pulse-shape that minimizes the combined effects of both crosstalk and inter-symbol interference. When implementing this optimal pulse shape, filter taps that are fractionally spaced are beneficial. As a test, various pulse shapes were injected into a test channel with three parallel microstrip lines, and the received eye diagrams were measured. The crosstalk-aware pulse shape results in an increased eye opening when compared to square and pre-emphasis pulses.
ISBN:1424409209
9781424409204
ISSN:0271-4302
2158-1525
DOI:10.1109/ISCAS.2007.378308