Research And Implementation Of Broadband Integrated Data Optical Network Access Node

Wideband Intergrated Digital Optical Synchronous Network,which is based on the optical communication micro electron and other disciplines, is a new access network of integrated data. In this network, FPGA of Altera Corporation's is taken as the core processing unit and using the optical fiber as the transmission medium.Moreover, the bandwidth of this network is dynamically aligned according to the flows of data, which guaranteed the rationality and highly effective of the data bandwidth.These characteristics make the Wideband Intergrated Digital Optical Synchronous Network very Suitable for applications in industrial control network.Wideband Intergrated Digital Optical Synchronous Network mainly consists of Concentrator,Integrated Information Acess Point(IAP)and Junction Nodes.IAP is mainly researched and designed in this paper.Firstly,development status and future trend of industrial control network at home and abroad is introduced,then propose the Wideband Intergrated Digital Optical Synchronous Network.In order to understand the IAP better, the architecture,frame structure and technical characteristics of the Wideband Intergrated Digital Optical Synchronous Network are discussed and researched in detail.Then the system components and the function realization of the IAP is researched priority.IAP is mainly to complete the following work. Firstly the DM9000A Fast Ethernet controller chip is conducted a reasonable configuration on the QuartusII development platform using FPGA and verilog language and designed its interface IP core; and then achieving the communication between Ethernet data and Wideband Intergrated Digital Optical Synchronous Network through being embedded Nios II Embedded processor as controller in the fpga .Secondly, the video decoder ADV7181B which is conducted a reasonable configuration by FPGA produces a YUV [4:2:2] digital video data stream, and the Video deinterleave, Interpolation and conversion into RGB format are designed in FPGA for detail. To the end accessed image to Wideband Intergrated Digital Optical Synchronous Network is controled by Nios II Embedded processor .In addition, we have conducted some research in theory to the voice,which is accessed to IAP as an extended function.Wideband Intergrated Digital Optical Synchronous Network as a unique kind of new network,there may be some deficiency to the IAP research and need to be constantly improved and perfected in the later work.