Physical medium characteristics of a network technology.
The Physical ( PHY) device interfaces the controller to the copper or fiber medium. Up to 8 PHY s are available on a single IC for 10/100 Ethernet over copper media.
A standard protocol that defines symbols, line states, clocking requirements, and the encoding of data for transmission.
The physical, or lowest, layer of the OSI Network Model. In a wireless network, the PHY defines parameters such as data rates, modulation method, signaling parameters, transmitter/receiver synchronization, etc. Within an actual radio implementation, the PHY corresponds to the radio front end and baseband signal processing sections. (See ISO Network Model). close
Provides for transmission of cells over a physical medium connecting two ATM devices. This physical layer is comprised of two sublayers: the PMD Physical Medium Dependent sublayer, and the TC Transmission Convergence sublayer.
Physical layer device. The Ethernet PHY at Layer 1 of the OSI model defines the electrical and optical signaling, line states, clocking guidelines, data encoding, and circuitry needed for data transmission and reception. Contained within the PHY are several sublayers that perform these functions including the physical coding sublayer (PCS) and the optical transceiver or physical media dependent (PMD) sublayer for fiber media. The Ethernet PHY connects the media to the MAC (Layer 2).
Physical Layer entity sublayer
Physical Layer Device. The name used for a transceiver in Fast Ethernet and Gigabit Ethernet systems.
Edit / Physical Interface - The interface that corresponds to Layer 1 of the 7-layer OSI internetworking model; This layer is comprised of the PCS and PMD.
The bottom layer of the ATM protocol reference model, it is subdivided into two sublayers: Transmission Convergence (TC) and Physical Medium (PM). It provides ATM cell transmission over the physical interfaces that interconnect the ATM devices.
Physical Layer Interface - Direct interface to the transmission medium.
Physical Layer. Transmits raw bits of data by establishing and terminating connections to a networked communications resource. Refers to network hardware, physical cabling or a wireless connection. Considered layer one of the seven-layer OSI (Open Systems Interconnection) model of data communications. See Also: OSI
Physical (layer of OSI Reference Model). See also Physical Layer.
Common IEEE abbreviation for the PHYsical layer.
physical sublayer. One of two sublayers of the FDDI physical layer. See also PMD.
Physical Interface The IEEE Ethernet standard interface between the external physical layer transceiver and the on-chip ethernet controller in a PowerQUICC? device. Often used to refer to the external transceiver itself, the PHY is controlled more or less transparently to software via the MII.
Physical Interface The physical layer transceiver which implements the IEEE Ethernet standard interface between the ethernet wires (twisted pair, 50 ohm coax, etc.) and the ethernet controller ( MAC). PHYs are often external transceivers but may be integrated in the MAC chip or in the CPU. The PHY is controlled more or less transparently to software via the MII.
Physical Layer. The PHY is the lowest layer within the OSI Network Model.
Physical layer. The sublayer of the various physical layer protocols that provides the clock speed, data-encoding scheme, and control symbols used in the network.
PHY (often pronounced "fÄ«.") is a common abbreviation for physical layer of OSI model.