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In this paper, we present a dynamic power management technique for optimizing the use of virtual channels in network on chips. The technique which is called dynamic virtual channels allocation (DVCA) makes use of the traffic conditions and past buffer utilization to dynamically forecast the number of virtual channels that should be active. In this technique, for low(high) traffic loads, a small (large)...
Intentional tampering in the internal circuit structure by implanting Trojans can result in disastrous operational consequences. While a faulty manufacturing leads to a nonfunctional device, effect of an external implant can be far more detrimental. Therefore, effective detection and diagnosis of such maligned ICs in the post silicon testing phase is imperative, if the parts are intended to be used...
Crosstalk faults have emerged as a significant mechanism for circuit failure. Long signal nets are of particular concern because they tend to have a higher coupling capacitance to overall capacitance ratio. A typical long net also has multiple aggressors. In generating patterns to create maximal crosstalk noise on a net, it may not be possible to activate all aggressors logically or simultaneously...
In this paper we are addressing power efficiency and output ripple of an embedded switched-capacitor based DC/DC Buck Converters. Here we propose to use current pump based switched-capacitor circuit in buck converter. The current pump circuit limits transition current of the switched-capacitors and hence, improves power efficiency and reduces output ripple. We have also proposed an equivalent macro...
The translation look-aside buffer (TLB) is a very important part in the hardware support for virtual memory management implementation of high performance embedded systems. The TLB though small is very frequently accessed, and therefore not only consumes significant energy, but also is one of the important thermal hot-spots in the processor. Recently, several circuit and microarchitectural implementations...
This paper proposes a modified, inverter based transconductor using double CMOS pair for implementation of biquad Gm-C low-pass filter with bandwidth tunable from 100 kHz to 20 MHz. This bandwidth range meets the requirements of zero IF receivers for wireless applications. Major contributions of this paper are proposal for operating the Gm stage in sub-threshold region so as to minimize the power...
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