Communication negotiation method, system of physical layer chip and a physical layer chip thereof

Abstract

The invention discloses a communication capacity negotiation method of physical layer chips, which is applied to a network equipment provided with a first physical layer chip and a second physical layer chip, and the method comprises: the first physical layer chip negotiates the communication capacity with an opposite end of itself, and notifies the confirmed communication capacity under negotiation to the second physical layer chip; and the second physical layer chip adopts the acquired communication capacity to negotiate the communication capacity with an opposite end of itself by a fixed negotiation mode. The invention discloses a communication capacity negotiation system of physical layer chips as well as physical layer chips. The invention can ensure the two physical layer chips to acquire the same communication capacity after the negotiations.

Description

technical field [0001] The invention relates to communication capability negotiation technology in the communication field, in particular to a communication capability negotiation method of a physical layer chip, a communication capability negotiation system of a physical layer chip and a physical layer chip. Background technique [0002] Two communication devices need to negotiate the communication capability of the physical layer before communication, and the communication capability includes communication rate and communication mode. Wherein, the communication rate includes 10Mbps, 100Mbps, and 1000Mbps, and the communication mode includes half-duplex, full-duplex and other communication modes. After negotiation, it can be negotiated into 10Mbps half-duplex, 100Mbps full-duplex and so on. The communication capability negotiation of the physical layer is performed between the physical layers of the communicating parties. [0003] For long-distance Ethernet devices, the n...

AI Technical Summary

Problems solved by technology

But this way is obviously not flexible enough

If the LRE PHY chip and the common PHY adopt the self-negotiation mode respectively, since the LRE PHY chip and the normal PHY negotiate separately and do not communicate with each other, it cannot be guaranteed that the LRE PHY chip and the normal PHY chip will obtain the same communication capabilities

Images