GENERAL PURPOSE MULTI-PORT NETWORK INTERFACE CARD FOR FAULT-TOLERANT ETHERNET USING SWITCHING CHIP BASE OF LOGIC GATE

摘要

PURPOSE: An automatic high-speed failure recovery Ethernet multiplexing network system using a logic gate based switching chip is provided to select a port without additional device such as a processor or middleware. CONSTITUTION: A high-speed automatic failure recovery Ethernet multiplexing network system includes a port unit(100), a PHY chip unit(200), a MAC chip(300) and a switching unit(400). The port unit is connected to the outside. The PHY chip unit communicates a signal inputted and outputted through the port unit with a MII/GMII(Media Independent Interface/Gigabit Media Independent Interface) protocol. The MAC chip has a MAC address. The switching unit converts a port by switching a MMI/GMII signal. In case of failure in a port in an operation mode, the switching unit operates the port in a standby mode to an operating mode. A first MII/GMII signal inputted from a first port of the port unit and a second MII/GMII signal inputted from a second port are connected to a MII/GMII signal connected to the MAC chip. [Reference numerals] (210) First PHY chip(PHY 0); (220) Second PHY chip(PHY 1); (300) MAC chip; (400) Switching unit, MII/GMII switching; (AA,BB) Magnetic