To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

4,5
Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
Live Statistics
English Articles
Improved in 24 Hours
Added in 24 Hours
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.
.
Leo
Newton
Brights
Milds

From Wikipedia, the free encyclopedia

RTL8201 Ethernet PHY chip
RTL8201 Ethernet PHY chip
Texas Instruments DP83825 - 3mm x 3mm 3.3V PHY chip
Texas Instruments DP83825 - 3mm x 3mm 3.3V PHY chip

A PHY, an abbreviation for "physical layer", is an electronic circuit, usually implemented as an integrated circuit, required to implement physical layer functions of the OSI model in a network interface controller.

A PHY connects a link layer device (often called MAC as an acronym for medium access control) to a physical medium such as an optical fiber or copper cable. A PHY device typically includes both Physical Coding Sublayer (PCS) and Physical Medium Dependent (PMD) layer functionality.[1]

-PHY may also be used as a suffix to form a short name referencing a specific physical layer protocol, for example M-PHY.

Modular transceivers for fiber-optic communication (like the SFP family) complement a PHY chip and form the PMA sublayer.

YouTube Encyclopedic

  • 1/3
    Views:
    7 948
    7 125
    1 284
  • TI Precision Labs - Ethernet: What is an Ethernet PHY?
  • PHY (Physical Layer) Working Group - M-PHY Tutorial by Ken Drottar, Intel - part 1
  • PHY (Physical Layer) Working Group - M-PHY Tutorial by Ken Drottar, Intel - part 2

Transcription

Ethernet physical transceiver

Micrel KS8721CL - 3.3V Single Power Supply 10/100BASE-TX/FX MII Physical Layer Transceiver
Micrel KS8721CL - 3.3V Single Power Supply 10/100BASE-TX/FX MII Physical Layer Transceiver

The Ethernet PHY is a component that operates at the physical layer of the OSI network model. It implements the physical layer portion of the Ethernet. Its purpose is to provide analog signal physical access to the link. It is usually interfaced with a Media Independent Interface (MII) to a MAC chip in a microcontroller or another system that takes care of the higher layer functions.

More specifically, the Ethernet PHY is a chip that implements the hardware send and receive function of Ethernet frames; it interfaces between the analog domain of  Ethernet's line modulation and the digital domain of link-layer packet signaling.[2] The PHY usually does not handle MAC addressing, as that is the link layer's job. Similarly, Wake-on-LAN and Boot ROM functionality is implemented in the network interface card (NIC), which may have PHY, MAC, and other functionality integrated into one chip or as separate chips.

Common ethernet interfaces include fiber, or two to four copper pairs for data communication. However, there now exists a new interface, called Single Pair Ethernet (SPE), which is able to utilize a single pair of copper wires while still communicating at the intended speeds. Texas Instruments DP83TD510E[3] is an example of a PHY which uses SPE.

Examples include the Microsemi SimpliPHY and SynchroPHY VSC82xx/84xx/85xx/86xx family, Marvell Alaska 88E1310/88E1310S/88E1318/88E1318S Gigabit Ethernet transceivers, Texas Instruments DP838xx family[4] and offerings from Intel[5] and ICS.[6]

Other applications

References

  1. ^ Mauricio Arregoces; Maurizio Portolani (2003). Data Center Fundamentals. ISBN 9781587050237. Retrieved 2015-11-18.
  2. ^ "microcontroller - what is the difference between PHY and MAC chip - Electrical Engineering Stack Exchange". Electronics.stackexchange.com. 2013-07-11. Retrieved 2015-11-18.
  3. ^ "DP83TD510E Ultra Low Power 802.3cg 10Base-T1L 10M Single Pair Ethernet PHY" (PDF). Texas Instruments. Retrieved 12 October 2020.
  4. ^ "Ethernet PHYs". Texas Instruments. Retrieved 12 October 2020.
  5. ^ Intel PHY controllers brochure
  6. ^ osuosl.org - ICS1890 10Base-T/100Base-TX Integrated PHYceiver datasheet
This page was last edited on 25 February 2021, at 14:29
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.