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In modern VLSI Design, on-chip-variation (OCV) has become serious as the feature size continues to shrink. Especially, in the top-level clock tree, OCV-induced clock skew should be properly controlled because of long wires. In this paper, we present a practical industrial design methodology for minimizing the OCV-induced clock skew of top-level clock tree. Our basic idea is to pre-place guide buffers...
Clock gating is recognized as one of the most effective techniques to reduce the dynamic power consumption. Many research efforts have been paid to build activity-driven clock trees for low power designs. On the other hand, as the feature size continues to shrink, the on-chip-variation (OCV) effect has become a serious concern, especially for the clock skew of the top-level clock tree. Based on this...
In the low power design of integrated circuits, multiple power modes and clock gating are the two common techniques to reduce dynamic power consumption. In the multiple power modes designs, replacing some of the normal buffers with adjustable delay buffers (ADBs) and assign different delay values in different power modes is one of the promising solutions to satisfy the clock skew constraint, and clock...
Modular exponentiation in the Rivest, Shamir, and Adleman cryptosystem is usually achieved by repeated modular multiplications on large integers. To speed up the encryption/decryption process, many high-speed Montgomery modular multiplication algorithms and hardware architectures employ carry-save addition to avoid the carry propagation at each addition operation of the add-shift loop. In this paper,...
This paper presents a new low-power charge-recycling dynamic programmable logic array (PLA). The charge recycling PLA reduces the power consumption in product lines by recycling the previously used charge. The proposed dynamic PLA, product lines swing voltage is lowered by the charge recycling circuit between on adjacent product lines. Power consumption in product lines can be reduced theoretically...
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