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Growing chip integration density and increasing frequencies lead to tremendous leakage power and henceforth to chip heat problems. Power management is one possibility to reduce the power consumption and get the temperature problem under control. Current technology mainly focuses on power-gating techniques on basis of multi-core systems but leaving the network perspective out of scope. We provide a holistic concept, bringing together voltage and frequency scaling techniques for network-on-chips. Following this, network static power consumption could be minimized without affecting the system performance. We present a light-weight power management controller for network-on-chips with online monitoring to optimize the power consumption of network resources. Our work comprises a hardware simulation model for design space exploration of varying technology specific parameters and an FPGA based prototype for verification. The power saving poten-tial heavily depend on the network communication load. Keywords-network-on-chip, router, power management, voltage scaling, frequency scaling, clock gating, power gating

Network on Chip Router with Power Management Unit for Improved Network Fabric Power Efficiency