Physical address conversion device and conversion method

Abstract

A physical address conversion device and method includes a first interface, a second interface and a conversion module, the first interface sets up a communication connection with MAC layer chip, the second interface sets up communication connection with the physical layer chip, the conversion module intercepts and shields the physical address of MAC layer chip, outputs the preserved physical address in the chip to match with the physical layer chip. A conversion method includes: preserving the address of the physical layer chip, intercepting and shielding the address of MAC Layer chip, outputting the address of the physical layer chip to the physical layer chip to match with its address for connecting with the chips of the physical layer and MAC.

Description

technical field [0001] The invention relates to communication between a physical layer chip and a MAC layer chip, a physical address conversion device and a conversion method applied in a medium-independent interface. Background technique [0002] In the field of communication, the media access control (MAC, Media Access Control) layer chip (or other MAC layer chip) can access the registers of the physical layer chip through the management interface of the media independent interface (MII, Media Independent Interface), and through these registers To control and manage the physical layer chip. The management interface includes two signal lines: management data synchronous clock input (MDC, Management Data Clock) and bidirectional management data (MDIO, Management data input / output), as follows: [0003] MDC: The clock of the management interface is a non-periodic signal. The minimum period of the signal (actually the sum of positive level time and negative level time) is 400...

AI Technical Summary

Problems solved by technology

[0016] The problem solved by the present invention is to avoid developing and designing multiple physical layer single boards due to physical address mismatch when the MAC layer chip or other MAC layer chips access the physical layer chip through the media independent interface

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