BCM54640E

Quad-Port GbE Transceiver with IEEE1588v2 and IEEE 802.3az EEE Support

The BCM54640E transceiver can support either four SGMII to copper (10/100/1000BASE-T) interfaces, or four SGMII to Fiber (100BASE-FX, 1000BASE-X, or SGMII-Slave) interfaces. When in SGMII to Copper mode, the PHY performs all of the physical layer (PHY) functions for 1000BASE-T, 100BASE-TX, and 10BASE-T on standard Category 5 UTP cable. When in SGMII to Fiber mode, the PHY performs all of the physical layer (PHY) functions for 100BASE-FX, 1000BASE-X, and SGMII-Slave. The BCM54640E is designed to comply with the SGMII industry standard.

The BCM54640E is based on the proven digital signal processor technology of Broadcom, combining digital adaptive equalizers, ADCs, phase locked loops, line drivers, encoders, decoders, echo cancellers, crosstalk cancellers, and all other required support circuitry integrated into a single monolithic CMOS chip. With full compliance to IEEE 802.3az Energy Efficient Ethernet standard, the BCM54640E substantially lower power consumption during periods of low-link utilization. In addition, with Broadcom's AutogrEEEn™ technology, the BCM54640E can be in EEE mode when interfacing with non-EEE enabled MAC switches, allowing system designers to take advantage of EEE technology and realize power savings today. For application that require precise and accurate synchronization of nodes in the network, the BCM54640E includes support for 1588 Precision Time Protocol(PTP) and is fully compliant to IEEE 1588-2008(version 2) standard.

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  • Supports four copper ports (10BASE-T/100BASE-TX/1000BASE-T) or four fiber ports (100BASE-FX/1000BASE-X) in a single fully integrated 65nm CMOS chip
  • IEEE 802.3az compliant
    - Supports Native EEE MACs
    - Supports Legacy Non-EEE MACs using AutogrEEEn mode
  • IEEE standard 1588-2008(version 2) support
  • Synchronous Ethernet support
  • Cable plant diagnostic that detects cable plant impairments
  • Programmable current LEDs
  • Low EMI emissions
  • On-chip thermal and voltage monitors

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