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What is physical layer?
The Physical Layer is the first level in the seven-layer OSI model of computer networking. It translates communications requests from the Data Link Layer into hardware-specific operations to effect transmission or reception of electronic signals. The implementation of this layer is often termed PHY.
total search3627 articles
2002-09-30 Yageo to introduce 500-layer MLCCs
Yageo Corp. has announced that it will be introducing 500-layer, high-capacitance multilayer ceramic capacitors targeted at replacing aluminum electrolytic capacitors.
2007-01-11 Verbatim/MKM touts 50Gbyte dual-layer Blu-ray media
Verbatim/MKM has started production of 2X speed 50Gbyte dual-layer Blu-ray Recordable and Blu-ray Rewriteable media for shipment to the United States.
2004-09-06 UWB camp forms SIG, finalizes physical-layer spec
The Multiband-OFDM Alliance has formed a special interest group (SIG) to develop technical specifications based on its version of ultrawideband high-rate, short-range wireless communications.
2011-08-12 USB 3.0 hub controllers support 2-layer PCB designs
SMSC's family of SuperSpeed USB hubs that claims to deliver the industry's smallest footprint eases expansion in docking stations, port replicators and all-in-one monitors.
1999-06-29 Upgrade to high rate physical layer by IEEE802.11
This paper gives a summary of the IEEE802.11 high-rate PHY history, an overview of the CCK waveform and the standard in general.
1999-06-29 Upgrade to high rate physical layer by IEEE802.11
This paper gives a summary of the IEEE802.11 high-rate PHY history, an overview of the CCK waveform and the standard in general.
2002-05-07 Understanding the Flash Translation Layer (FTL) specification
This application note defines the interfaces and operation behavior of the Flash Translation Layer, or FTL as it is more commonly known.
2004-12-15 Toshiba, Memory-Tech propose dual-layer DVD/HD DVD disk
Seeking to ease the transition from the DVD to HD DVD format, Memory-Tech Corp. and Toshiba Corp., the main promoters of HD DVD, have jointly developed a dual-layer ROM (read-only) disk capable of storing both DVD and HD DVD content in the same disk.
2015-03-30 Toshiba samples 48-layer, 2bit/cell flash memory
Toshiba's 48-layer stacked cell flash memory BiCS enhances reliability of the write/erase capability and boosts write speed in SSDs. The device is already having sample shipments.
2004-08-16 Tongxin four-layer PCB measures 150-by-200mm
Shenzhen Tongxin Circuit Electronic has disclosed the availability of its 4B6371 four-layer PCBs that come in dimensions of 150-by-200mm.
2004-08-30 Tester tailored for ADSL2+ multi-layer analyzer
TraceSpan Communications released its latest test equipment for ADSL2+ multi-layer analyzer.
2004-04-19 Tegal, Sharp partner nano layer deposition development
Tegal Corp. and Sharp Laboratories of America have entered into an agreement to collaborate on a focused joint development program (JDP) to accelerate the adoption and integration of next generation high-K dielectrics.
2003-08-29 TeamF1 rolls standards-based Layer-2 Port authentication
The X-Calibur from TeamF1 Inc. is an embedded implementation of the Port-based Network Access Control protocol.
2005-11-11 Structured ASIC devices embed PCI Express physical layer
ChipX has introduced a new structured ASIC family that it claims is a low-risk alternative to traditional ASIC and FPGA devices
2000-03-15 STA013 MPEG 2.5 Layer III source decoder
This application note assists the user in working with the STA013 Evaluation Board, installing the PC software driver, understanding how STA013 MPEG 2.5 Layer III source decoder works, and explaining how to control the device functions.
2007-05-11 ST reports 65nm multistandard HDD physical layer IP
STMicroelectronics has revealed what it claims as the industry's f its next-generation 65nm serial-interface MIPHY (Multi Interface PHY) Physical Layer interface IP.
2005-04-20 ST produces 90m silicon of MIPHY disk-drive physical layer IP
STMicroelectronics has revealed the fabrication of MIPHY (Multi-Interface PHY) physical layer interface IP using 90nm technology.
2011-05-18 Single-layer sensor delivers lower-cost capacitive touchscreens
Cypress has created proprietary algorithms that interface with a true single-layer sensor without bridges to deliver two-layer performance, enabling mobile device makers to save 30 percent on sensor costs.
2001-08-30 Simulation of the physical layer of IEEE 803.3 CSMA/CD (Ethernet)
This application note provides the framework for the implementation of a detailed simulation of the physical layer of the IEEE 803.3 CSMA/CD standard.
2014-12-17 Silicon Labs: Translation of apps layer arriving in 2015
Knowing intimately what "things" are supposed to do and how they think and behave will be the key to solving one of the IoT's most pressing issues: application layers.
2004-07-29 Semitool licenses seed layer enhancement to Ebara
Semitool Inc. has licensed its seed layer enhancement patents to Japan-based Ebara Corp.
2008-04-23 Seiko touts 'thinnest' chip-type double-layer capacitor
Seiko Instruments will introduce the world's thinnest and smallest chip-type electric double layer capacitor, part number CP3225A, in October.
2004-06-18 Routing rides to application layer
Sarvega is fulfilling an earlier promise to bring routing to application-layer uses of the Extensible Markup Language.
2004-02-18 Quake physical layer device consumes <900mW
The QT2022 integrated 10G serial-to-XAUI PHY device from Quake Technologies optimizes next-generation modules and system cards.
2009-04-17 Processor performs Layer 7 content-aware processing
NetLogic Microsystems Inc. has rolled out the NLS2008 Layer 7 knowledge-based processor, claiming it as the first processor capable of deterministically performing Layer 7 content-aware processing functions at 120Gbit/s.
2008-05-16 Physical layer is key in LIN designs
The Local Interconnection Network standard defines a low-cost, serial communication network for automotive distributed electronic systems. LIN is a complement to the other automotive multiplex networks, including CAN, but it targets applications that require networks that do not need excessive bandwidth, performance or extreme fault tolerance.
2011-12-30 Perform FlexRay physical layer eye-diagram mask test
Here are the step-by-step instructions on how to set up eye-diagram mask tests on an Agilent InfiniiVision series oscilloscope.
2008-05-02 Panasonic releases long-life electric double layer capacitor
Panasonic has rolled out a stacked coin-type electric double layer capacitor, which is claimed to guarantee a life span of 2,000hrs at 85C.
2004-01-16 Optimizing access networks with Layer 3 switching
Network operators and equipment vendors are facing many of the same decisions that once concerned enterprise and carrier networks.
2003-02-17 Optical layer needs management
The need for sophisticated optical monitoring has arisen as the MAN has evolved. Thus, new advanced management capabilities for the optical layer are key to network and business improvement.
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