# Ethernet physical-layer transceiver

Canonical URL: https://eloragrid.ai/symbols/ethernet-phy
Publisher: Elora Grid
Updated: 2026-10-27
Lookup label: PHY
Drawing use: Schematic
Reference families: Manufacturer

An Ethernet PHY handles the electrical signalling of the selected Ethernet physical link.

## In plain English

### What does Ethernet physical-layer transceiver mean?

An Ethernet PHY handles the electrical signalling of the selected Ethernet physical link.

### A simple example

A network controller can connect through a PHY and its associated interface components to a cable.

### What the drawings help you do

Draw the link between the network controller and PHY separately from the cable-side interface. The PHY handles the physical signalling of the chosen Ethernet variant. The connector, magnetics where required, cable and controller interface still have to match the selected design.

### Before using this reference

- Identify the supported Ethernet physical-layer variant.
- Show the selected controller-to-PHY interface.
- Reference connector, cable and line-interface requirements.

### Does a PHY make a complete Ethernet switch?

No. A switch needs the selected switching functions and ports in addition to physical interfaces. A PHY alone does not provide routing or the application running on a networked device.

### Terms

- PHY: Physical-layer circuitry that sends and receives a selected link’s electrical signals.
- MAC: Media-access control, a separate part of an Ethernet communication implementation.

Concept diagram: Network controller interface → Ethernet PHY → Specified cable-side link
Original functional explanation. Arrows show information or energy roles; two-headed arrows identify two-way interfaces. This is not a pinout, certified standards graphic or complete circuit.

- [Ethernet physical interfaces](https://www.ti.com/product-category/interface/ethernet-ics/overview.html)


## What it represents

An Ethernet PHY handles the electrical signalling of the selected Ethernet physical link.
A network controller can connect through a PHY and its associated interface components to a cable.
Draw the link between the network controller and PHY separately from the cable-side interface. The PHY handles the physical signalling of the chosen Ethernet variant. The connector, magnetics where required, cable and controller interface still have to match the selected design. This is original functional artwork, not a certified standard graphic or device pinout.

## How to read it

- Identify the supported Ethernet physical-layer variant.
- Show the selected controller-to-PHY interface.
- Reference connector, cable and line-interface requirements.
- A PHY is not a complete Ethernet switch, router or application controller.

## Information to show or reference

- Identify the supported Ethernet physical-layer variant.
- Show the selected controller-to-PHY interface.
- Reference connector, cable and line-interface requirements.

## Important distinction

A PHY is not a complete Ethernet switch, router or application controller.

## Facts

- Representation type: Original functional block; not a certified IEC or IEEE graphic
- Concept input: Network controller interface
- Concept output: Specified cable-side link

## Public references

- [Ethernet physical interfaces](https://www.ti.com/product-category/interface/ethernet-ics/overview.html) — Texas Instruments. Ethernet physical interfaces: public technical context for the named function. Product and compliance details remain with the publisher.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.