10G/40G/100G Retimer And Gearbox

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*Certain versions of this device are not available for sale in Germany or shipment to or from Germany, and these versions should not be used in any product destined for the German market.

The BCM82793 is a physical layer device that supports 10G, 40G and 100G Ethernet.

In 100G mode, the device gearboxes four lanes of 25Gb/s data into a standard 10 by 10Gb/s CAUI bus. In retimer mode, the device retimes 10 lanes of 10Gb/s data supporting two 40G Ethernet ports, ten 10G Ethernet ports or a mix thereof. The BCM82793 is offered in an industry standard 19 x19 mm footprint, enabling upgrades to existing systems. The 25Gb/s, line side, interface is fully compliant with the 100G Ethernet IEEE802.3ba and IEEE802.3bj standards including support for IEEE CL73 (Autoneg), CL91 (FEC) and CL92 (Transmit Training).


  • 100G gearbox with optional retiming modes for 2x40GbE or 10x10GbE
  • Standard system side CAUI bus
  • Industry standard 19 x19 mm package
  • IEEE CL73 Auto Negotiation
  • CL85, CL92, CL93 Transmit Training
  • CL91 FEC
  • Fully adaptive 25G and 10G receivers with 30dB of EQ
  • Low power 28nm CMOS


  • HDTV
  • IPTV
  • Set-Top Boxes


Specification Value
Lifecycle Active
Distrib. Inventory No
Package 28nm, FPB4NGS, 27mmx27mm
PHY Type Gearbox
I/O Controller
Bus Interface
Transfer Rates
External Memory Interfaces 8-bit and 16-bit Flash, w/ 6 Chip Selects SRAM, NVSRAM


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