Abstract
We present a method for synthesizing crosstalk cancelling equalization filters for off-chip buses. Our approach is based on linear programming and allows direct optimization of the eye mask as well as controlling maximum filter output and maximum overshoot at the receiver. While the linear program formulation is flexible and straightforward, the resulting linear programs are quite large. We present an implementation of Mehrotra’s interior point method that exploits the structure and sparsity of our problem, enabling the practical synthesis of filters for large buses. As an example, we show a 32-bit bit bus with tight wire spacings. Using our filters, we achieve 7.5 times the bandwidth of a bus with no equalization, and 5 times the bandwidth of a bus with single-line pre-emphasis.
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Ren, J., Greenstreet, M.R. (2004). Crosstalk Cancellation for Realistic PCB Buses. In: Macii, E., Paliouras, V., Koufopavlou, O. (eds) Integrated Circuit and System Design. Power and Timing Modeling, Optimization and Simulation. PATMOS 2004. Lecture Notes in Computer Science, vol 3254. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-30205-6_7
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DOI: https://doi.org/10.1007/978-3-540-30205-6_7
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-23095-3
Online ISBN: 978-3-540-30205-6
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