New Product Introduction

Broadcom BCM84851 10GBASE-T transceiver

The device performs all physical-layerfunctions for 10GBASE-T, 1000BASE-T, and100BASE-TX Ethernet on Category 6, 6A, or 7twisted-pair cable.

Broadcom BCM84851 product image

The device performs all physical-layerfunctions for 10GBASE-T, 1000BASE-T, and100BASE-TX Ethernet on Category 6, 6A, or 7twisted-pair cable. The 1000BASE-T and 100BASETXcan operate on standard Category 5e UTP. TheBCM84851 supports the XFI/10GBASE-KR and1000BASE-X(SGMII) interface for connection to aMAC. The BCM84851 is a highly integrated solutioncombining digital adaptive equalizers, ADCs, phaselockedloops, line drivers, encoders, decoders, echocancellers, crosstalk cancellers, and all requiredsupport circuitry.

 

Key features

  • Enhanced Cable Diagnostics
  • XFI/10GBASE-KR and SGMII MAC Interface
  • Auto sense mode
  • Low electromagnetic interference (EMI) emissions

 

Additional features

  • 10GBASE-T IEEE 802.3an
  • 1000BASE-T IEEE 802.3ab
  • 100BASE-TX IEEE 802.3u
  • IEEE 802.3z
  • IEEE 802.3az
  • XFI/10GBASE-KR and SGMII MAC Interface
  • IEEE 1588-2008 version 2-compliant
  • IEEE fast retrain and link monitoring
  • EEE on 10GBASE-T, 1000BASE-T, and
  • 100BASE-TX
  • Auto sense mode
  • Trace matched output impedance
  • Line-side loopback
  • Low electromagnetic interference (EMI) emissions
  • Enhanced Cable Diagnostics
  • Support for jumbo packets up to 18 KB
  • Detection and correction of pair swaps (MDI
  • crossover), pair skew, and pair polarity
  • Auto-negotiation with next page support
  • IEEE 1149.1 (JTAG) and IEEE 1149.6 (ACJTAG)
  • boundary scan support
  • Low-power, 1.0V CMOS core
  • 1.2V or 2.5V MDIO I/O, 1.8V CMOS I/O
  • Device package: 11 mm x 11 mm BGA

 

Applications

  • 10-Gigabit Ethernet (GbE) switches and uplinks
  • 10GbE server adapter
  • 10GbE host control

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