Device for long-distance transmitting Ethernet physical layer interface signal

Abstract

The invention is concerned with the equipment that achieves long distance transmission by using Ethernet physical layer signal, includes: the processing board and the interface board, the processing board consists of the control chip access with the Ethernet medium, the Ethernet signal driver and the information connector, the medium accesses into the control chip connecting with the physical layer chip, the physical layer chip and the signal driver, the signal diver and the signal connector connect with the interface through the Ethernet physical layer; the interface board includes the Ethernet interface electric circuit, the Ethernet signal driver and the signal connector, the interface electric circuit and the signal driver, the signal driver and the signal connector connect with the interface through the Ethernet physical layer.

Description

technical field [0001] The invention relates to a device providing an Ethernet interface, in particular to a device for realizing long-distance transmission of Ethernet physical layer interface signals. Background technique [0002] Many devices that provide Ethernet interfaces need to provide Ethernet interfaces on the user side. The types of Ethernet interfaces currently provided mainly include: 10M / 100M electrical interface, 100M optical interface, 1000M optical / electrical interface, etc. Due to the flexibility and diversity of Ethernet technology applications, Ethernet devices are often required to provide flexible and diverse Ethernet interfaces, so equipment developers sometimes need to develop a device for each rate and each type of interface . [0003] In fact, with the development of chip technology, Ethernet MAC (Media Access Control) chips and PHY (Physical Layer) chips can be compatible with 10M / 100M / 1000M speed and optical / electrical interface , capable of in...

AI Technical Summary

Problems solved by technology

In this way, the distance between the PHY chip 120 and the Ethernet interface circuit 220 can be very close, but the distance between the MAC chip 110 and the PHY chip 120 increases.

Interfaces such as MII, RMII, SMII, SS-SMII, GMII, and TBI are usually used between the MAC chip 110 and the PHY chip 120. The maximum transmission distance of each interface is different, and the interface has many signal lines, which will occupy more connector terminals. , more importantly, the PHY chip 120 usually requires the MAC chip 110 to provide a reference clock, and the line delay of the clock after long-distance transmission is likely to cause confusion in the interface timing

Therefore, this design also has unreliability

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