Analysis of interface characteristics of physical layer

Analysis of interface characteristics of physical layer

@ (computer network) mechanical properties functional characteristics process characteristics electrical characteristics

Mechanical characteristics: The main definition of physical connection characteristics, specify the physical connection of the specifications, the number of lead, the number of pins and arrangement.

Electrical characteristics: When transmitting bits , the voltage level, impedance matching, transmission rate and distance limit of the signal on the line are specified.

Feature: Indicates the meaning of a certain level appearing on a line, and the purpose of the signal line of the interface part.

Discipline characteristics/Process characteristics: The main definition of the physical circuit of the work procedures and timing relationship.

The main characteristics of electrical and functional characteristics of the difference. Read carefully to understand that the electrical characteristics of the agreement is the meaning of a more basic physical quantity, and the function of the popular saying is what to do. But a certain level on a line in a functional characteristic indicates what the fish's electrical properties seem to overlap. In fact, the electrical characteristics are generalized provisions, functional characteristics are embodied in the use, so is a line, a certain level is what meaning. The meaning of this definition, is the electrical characteristics of the provisions.