Power Line

Power line communication (PLC)

carries data on a conductor that is also used simultaneously for AC or electric to consumers. It is also known as power line carrier, power line digital subscriber line (PDSL), mains communication, power line telecommunications, or power line networking (PLN).
A wide range of power line communication technologies are needed for different applications, ranging from home automation to Internet access which is often called broadband over power lines (BPL). Most PLC technologies limit themselves to one type of wires (such as premises wiring within a single building), but some can cross between two levels (for example, both the distribution network and premises wiring). Typically transformers prevent propagating the signal, which requires multiple technologies to form very large networks. Various data rates and frequencies are used in different situations.
A number of difficult technical problems are common between wireless and power line communication, notably those of spread spectrum radio signals operating in a crowded environment. Radio interference, for example, has long been a concern of amateur radiogroups.


  • Four downstream ports, one upstream port
  • Four integrated downstream USB 2.0 PHYs
  • One integrated upstream USB 2.0 PHY
  • Integrated 10/100 Ethernet MAC with full-duplex support
  • Integrated 10/100 Ethernet PHY with HP Auto-MDIX
  • Implements Reduced Power Operating Modes
  • Minimized BOM Cost
  • Single 25 MHz crystal (Eliminates cost of separate crystals for USB and Ethernet)
  • Built-in Power-On-Reset (POR) circuit (Eliminates requirement for external passive or active reset)
Target Applications
  • Desktop PCs
  • Notebook PCs
  • Printers
  • Game Consoles
  • Embedded Systems
  • Docking Stations
Key Features
  • USB Hub
  • Fully compliant with Universal Serial Bus Specification Revision 2.0
  • HS (480 Mbps), FS (12 Mbps), and LS (1.5 Mbps) compatible
  • Four downstream ports, one upstream port
  • Port mapping and disable support
  • Port Swap: Programmable USB diff-pair pin location
  • PHY Boost: Programmable USB signal drive strength
  • Select presence of a permanently hardwired USB peripheral device on a port by port basis
  • Advanced power saving features
  • Downstream PHY goes into low power mode when port power to the port is disabled
  • Full Power Management with individual or ganged power control of each downstream port.
  • Integrated USB termination Pull-up/Pull-down resistors
  • Internal short circuit protection of USB differential signal pins
  • High-Performance 10/100 Ethernet Controller
  • Fully compliant with IEEE802.3/802.3u
  • Integrated Ethernet MAC and PHY
  • 10BASE-T and 100BASE-TX support
  • Full- and half-duplex support with flow control
  • Preamble generation and removal
  • Automatic 32-bit CRC generation and checking
  • Automatic payload padding and pad removal
  • Loop-back modes
  • TCP/UDP checksum offload support
  • Flexible address filtering modes
  • One 48-bit perfect address
  • 64 hash-filtered multicast addresses
  • Pass all multicast
  • Promiscuous mode
  • Inverse filtering
  • Pass all incoming with status report
  • Wakeup packet support
  • Integrated Ethernet PHY
  • Auto-negotiation, HP Auto-MDIX
  • Automatic polarity detection and correction
  • Energy Detect
  • Power and I/Os
  • Three PHY LEDs
  • Eight GPIOs
  • Supports bus-powered and self-powered operation
  • Internal 1.8v core supply regulator
  • External 3.3v I/O supply
  • Miscellaneous features
  • Optional EEPROM
  • optional 24MHz reference clock output for partner hub
  • IEEE 1149.1 (JTAG) Boundary Scan
  • Software
  • Windows 2000/XP/Vista Driver
  • Linux Driver
  • Win CE Driver
  • MAC OS Driver
  • EEPROM Utility
  • Packaging
  • 64-pin QFN, lead-free RoHS compliant
  • Environmental
  • Commercial Temperature Range (0°C to +70°C)
  • Industrial Temperature Range (-40°C to +85°C)
  • ±8kV HBM without External Protection Devices
  • ±8kV contact mode (IEC61000-4-2)
  • ±15kV air-gap discharge mode (IEC61000-4-2)


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