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The Design and Implementation of Mesh Networks Based on EOPCB

Author: DingXu
Tutor: LuoFengGuang
School: Huazhong University of Science and Technology
Course: Optical Engineering
Keywords: Waveguide interconnection Mesh networks Parallel computing
CLC: TN929.5
Type: Master's thesis
Year: 2009
Downloads: 10
Quote: 2
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Abstract

Mesh network is widely used in areas such as large-scale multi-processor parallel computer systems, network-on-chip (NoC) because of its advantages such as simple structure, regular, good scalability, and easy to realize.In high-performance computers, the traditional network of electrical interconnection has become a bottleneck of transmissing high-speed signals, it is imperative to develop the optical interconnection network.Optical interconnection network has a very high time and space-bandwidth product, low-latency, low power consumption, interference and so on, which is an effective means to overcome the existing bottleneck effect of the electrical interconnection network.The paper first outlines the structure and application of Mesh networks and optical interconnection’s application and background, focusing on analysising the key technologies and implementation of optical waveguide interconnection, and will Floyd algorithm used in the Mesh Networks.Author uses the 2×2 Mesh network as an example and performs the Mesh network design basing waveguide interconnection. Conditions in the existing technology, first, performs the overall framework’s design based on the Mesh network of EOPCB, selects the VSC3312 chip from the VITESSE company as the switching chip of Mesh network, VSC3312 single-channel bandwidth up to 6.5Gbps, meeting our design requirements. C8051F310 chip is selected as the Mesh network‘s central control chip, through the I2C interface, writing data in register of switching chip to control the switching chip, in order to achieve the Mesh network data’s logic function of shifting up, down, left, and right. Optical transceiver modules are from the parallel transceiver module 12 produced by the company of Wuhan Haibo, the rate per channel up to 3.125Gbps.Based the existing devices,according to the completed system’s framework designed, conform to the rules of high-speed circuit design, to perform the design about hardware circuit. The optical waveguide layer will be embedded in the traditional PCB, all high-speed signals will be transformed into optical signals, optical signals propagate through the waveguide layer, and the optical signals will be transformed into electrical signals at the terminal. So we achieve the goal that the high-speed signals are transmitted via optical format.Based on the hardware design, we carry out the design of PC software system based on the VB language. We are free to control the transmission direction of Mesh network in the PC client.Through the tests, each channel get the good eye diagram under 3.125Gbps, 2-way between the parallel-port bandwidth up to 6.25Gbps, achiving the logic function of Mesh Network, verifying the feasibility of the interconnection of the optical waveguide. This result achieves the desired objectives.

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