1000M and 10/100/1000M interface self-adapted Ethernet bridge

Abstract

The invention discloses an Ethernet Bridge connector with self-adaptive kilomega and ten / hundred / kilomega interface, which solves the inability to transform interfaces of various rates and the difficulty in controlling burst flow quantity from high speed port to low speed port. The Ethernet Bridge connector comprises a kilomega interface chip, a field programmable gate array, a field programmable gate array external hanging memory, a kilomega physical layer chip and a micro-controller small system, wherein the kilomega interface chip is connected with the field programmable gate array through a kilomega interface; the kilomega physical layer chip is connected with the field programmable gate array through a kilomega bit medium independent interface; the micro-controller controls the kilomega interface chip through a local bus and controls the kilomega physical layer chip through an MDIO interface. The invention has the advantages of low cost, flexible interface, automatic selection of a plurality of speed rates, sound buffering performance when interfaces at different rates are in bridge connection, with corresponding function of customization of different applications.

Description

technical field [0001] The invention belongs to the field of Ethernet transmission, in particular to an Ethernet bridge. Background technique [0002] In the process of designing and developing Ethernet transmission equipment, some special-purpose chips used usually only support Gigabit interfaces (GMII or TBI), but interfaces of different rates are required in different applications. A typical application It is a gigabit optical fiber transceiver: a remote device provides gigabit optical fiber, and the user end currently only supports ten / hundred megabit electrical interfaces. In order to protect user investment and upgrade capabilities, the user end is required to have the ability to interface with multiple rates. [0003] Using a switch chip can realize multiple rate conversion functions, but the switch chip is usually designed for multi-port, and the price is relatively high. More importantly, the switch chip is difficult to control the burst traffic from the high-speed ...

AI Technical Summary

Problems solved by technology

[0003] The switch chip can realize multiple rate conversion functions, but the switch chip is usually designed with multiple ports, and the price is relatively high. More importantly, the switch chip is difficult to control the burst traffic from the high-speed port to the low-speed port, mainly because The control of the internal memory of the switching chip is designed for multi-ports, and the method of multi-port shared buffer is adopted, and the capacity of the internal buffer is relatively small. If a large number of burst data packets are encountered, the buffer will overflow, causing data lost

In addition, many switching chips do not support jumbo frames, which also limits the application range of switching chips

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