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Design of Channel Direction Control Algorithm for Binoc Router

Author(s): Ashish khodwe1 , C.N. Bhoyar

Journal: International Journal of Engineering Trends and Technology
ISSN 2231-5381

Volume: 4;
Issue: 5;
Start page: 2035;
Date: 2013;
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Keywords: NoC | bidirectional channel

Novel BiNoC router architecture is presented that supports dynamic self-reconfiguration of flow direction in each channel. The BiNoC allows each communication channel to be dynamically selfconfigured to transmit flits in either direction in order to better utilize on-chip hardware resources. In this BiNoC router, adjacent routers will negotiate the flow directions of connecting channels according to a channel direction control (CDC) protocol. The flow direction at each channel is controlled by a channel direction control (CDC) algorithm. Implemented with a pair of finite state machines, this CDC algorithm is shown to be high performance, free of deadlock, and free of starvation. This added flexibility promises better bandwidth utilization, lower packet delivery latency, and higher packet consumption rate at each on-chip router. It is shown that the associated hardware overhead is negligible. This paper presents a VHDL based cycle accurate register transfer level model of inter-router traffic control known as Channel Direction Control algorithmfor BiNoC architectures. The paper discusses in detail the architecture and characterization of the various inter-router traffic control mechanism in BiNoC router.

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