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Sixth International Symposium on Quality of Electronic Design (ISQED'05)
Voltage Scaling, Wire Sizing and Repeater Insertion Design Rules for Wave-Pipelined VLSI Global Interconnect Circuits
San Jose, California
March 21-March 23
ISBN: 0-7695-2301-3
Vinita V. Deodhar, Georgia Institute of Technology, Atlanta
Jeffrey A. Davis, Georgia Institute of Technology, Atlanta
This paper illustrates a method to determine the optimal voltage, wire sizing and repeater insertion design rules for a global wire routing level that uses wave-pipelined interconnect circuits. In order to balance performance, power and area, a throughput-per-energy-area (TPEA) metric is introduced to guide the design of a global wire routing level to achieve maximum throughput (i.e. bit-rate) with optimal utilization of resources. A 180nm technology case study for a memory bus channel that requires an aggregate throughput of 332.8Gbps illustrates that the optimal TPEA combination of 1V supply, 6 repeaters per centimeter, a metal thickness to width aspect ratio of 2.5 and metal pitch to width ratio of 3 gives 12% reduction in dynamic power and over 60% reduction in wire area as compared to a published interconnect circuit that uses low voltage differential signaling (LVDS).
Citation:
Vinita V. Deodhar, Jeffrey A. Davis, "Voltage Scaling, Wire Sizing and Repeater Insertion Design Rules for Wave-Pipelined VLSI Global Interconnect Circuits," isqed, pp.592-597, Sixth International Symposium on Quality of Electronic Design (ISQED'05), 2005
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