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Efficient on-chip global interconnects

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3 Author(s)
Ho, R. ; Comput. Syst. Lab., Stanford Univ., CA, USA ; Mai, K. ; Horowitz, M.

We present circuits for a high-efficiency low-swing interconnect scheme suitable for the Smart Memories reconfigurable architecture. By using a separate supply, global clocking, and differential signaling, we reduce design complexity; and by using overdrive circuits, equalization techniques, and sense-amplifiers we retain high performance. A testchip built in a 1.8 V 0.18-/spl mu/m technology consumed <1pJ/bit for a 10 mm bus at 1 GHz, a power savings over full-swing signaling of up to 10 x, and demonstrated amplifier input offset voltages of under 100 mV.

Published in:

VLSI Circuits, 2003. Digest of Technical Papers. 2003 Symposium on

Date of Conference:

12-14 June 2003