Single-Port MII Copper/Fiber Fast Ethernet Transceiver

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Builds on Broadcom's proven DSP PHY design and full custom circuit design techniques to create a highly integrated and robust physical layer solution.
Digital Signal Processing (DSP) techniques allow the BCM5241 to achieve high interoperability and to exhibit robust performance across voltage (+/-10%), temperature and process variations. Broadcom's DSP-based, Digi-PHY™ technology has been proven in the shipment of over 500 million Fast Ethernet ports. Because of the significantly greater test coverage for a DSP-based PHY, Broadcom's PHYs exhibit superior quality with a failure rate of well under 10 PPM. The BCM5241 includes features that simplify the installation and maintenance of local area networks. A simple help tool is the Cable Auto-check, which enables basic cable issues to be resolved without contacting technical support. These issues include not plugging the cable correctly at one or both ends, identifying if the cable is damaged or determining if the remote system is powered up. For documentation and support, visit Broadcom Communities


  • 10BASE-T/100BASE-TX/100BASE-EFX IEEE 802.3u fast Ethernet transceiver
  • Power dissipation: <275mW
  • DSP-based architecture to ensure performance over temperature, voltage and process variation
  • Improved ease of use and installation, reduced support cost


  • Network Interface Cards (NICs)
  • Routers
  • Switches
  • Servers
  • Blade Servers
  • Gaming Devices

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