Modern packet processing hardware (e.g. IPv6-supported routers) demands high processing power, while it also should be power-efficient. In this paper we present an architecture for high-speed packet processing with a hierarchical chip-level power management that minimizes the energy consumption of the system. In particular, we present a modeling framework that provides an easy way to create new...

The CAIRN project-team researches new architectures, algorithms and design methods for flexible, secure, fault-tolerant, and energy-efficient domain-specific system-on-chip (SOC). As performance and energy-efficiency requirements of SOCs, especially in the context of multi-core architectures, are continuously increasing, it becomes difficult for computing architectures to rely only on programma...

Surfing is a latchless pipelining technique where the propagation delays of gates and other logic functions are modulated to produce event attractors. We describe a test chip that demonstrates a surfing pipeline ring and then introduce new circuits that dramatically reduce the energy overhead for surfing. Our test chip implements a twelve-stage, surfing ring that supports two independent waves ...

We discuss the design of energy-efficient pipelines for asynchronous VLSI architectures. To maximize throughput in asynchronous pipelines it is often necessary to insert buffer stages, increasing the energy overhead. Instead of optimizing pipelines for minimum energy or maximum throughput, we consider a joint energy-time metric of the form E , where E is the energy per operation and is the time...

1Fakultät für Informatik und Mathematik, University of Passau, Innstr. 43, 94032 Passau, Germany 2Electrical and Electronic Engineering Department, Imperial College London, South Kensington Campus, London SW7 2AZ, UK 3HP-European Innovation Centre, HP IIC (Italy Innovation Centre), Italy 4School of Information Technology, International University in Germany, Bruchsal, Germany 5VTT Technical Res...

In a bid to improve the interaction between computers and humans, it is becoming necessary to make increasingly larger deployments of sensor networks. These clusters of small electronic devices can be embedded in our surroundings and can detect and react to physical changes. They will make computers more proactive in general by gathering and interpreting useful information about the physical en...

The current encryption standard for wireless networks recommends using the AES cipher in the counter (CTR) mode for confidentiality and the cipher block chaining (CBC) mode for authentication. In the counter mode, a 128 bit counter is encrypted using the AES into 128 bit keystream which is then XORed with 128 bits of plaintext before transmission. This operation is repeated for the entire frame...