The Realization Of 1000Mbps Ethernet Aggregation Board In MSTP Equipment

In the transmission domain of MAN (Metropolis Area Network), varies of services required by the Telecom Vendors drive the evolvement of SDH to MSTP. After the first generation of MSTP based on transparent transmission of SDH, the providers are developing the new generation of MSTP devices. Especially, in order to meet the transmission requirement of Ethernet services, the new generation can not only aggregate and switch more Ethernet services, but also provide better QoS.Presently, most of commercial MSTP devices already have the capacities on Ethernet services aggregation, switch and thansmission at 10Mbps, 100Mbps and even 1000Mbps. However, with the rapidly increasing on high-bandwidth Ethernet services, MSTP devices are demanded to have higher port density and service aggregation ratio on their gigabit Ethernet cards. In traditional MSTP devices, restricted by the encapsulation technology, only 1 or 2 gigabit Ethernet ports can be provided on one access card. Also restricted by the signaling process technology, only 2 gigabit Ethernet signals can be mapped transparently into one 2.5Gbps SDH signal by adjacent concatenation. The 3rd generation of MSTP devices can map multi-signals into different 2.5Gbps SDH signals by GFP encapsulation technology and virtual concatenation technology.This thesis majored in the realization of a gigabit Ethernet aggregation card (GETH-AG card) with 4 1000BASE-X interfaces, which is a part of the 3rd generation MSTP devices of Alcatel. The card is based on the traditional access card with 2 1000BASE-X interfaces.The innovation is to interwork the small gigabit Enthernet transceivers and the high-integration physical layer processing chip. The aggregation capacity can be doubled by supporting 4 gigabit Ethernet ports on the same size PCB.This thesis focuses on the realization and application of the SFP transceiver, which is the smallest gigabit Ethernet transceriver. With this kind of optical transceriver, the layout can be much easier and more reliable. What's more, PM8354 is choosen as the signal process chip of gigabit Ethernet. PM8354 integrates the physical layer process capacity of 4 gigabit Ethernet signal, and its pins have the same voltage level as the SFP transceiver has, which can simplify the circuit design between SFP transceivers and PM8354.Based on the research on standard Alcatel card management system, the thesis realizes the management interfaces for the components and card itself. A FPGA chip is used to manage the components and an ASIC chip is used to manage the communication between...