BCM8705 - Serial 10-GbE/FC/SONET LAN/WAN PHY with XAUI™ Interface

Serial 10-GbE/FC/SONET LAN/WAN PHY with XAUI™ Interface

The BCM8705 Ethernet/Fibre Channel/SONET LAN/WAN PHY is a fully integrated serialization/deserialization (9.953/10.3125/10.5188-Gbps) interface device performing the extension functions for a 10-Gigabit Serial Ethernet Reconciliation Sublayer (RS) interface. The XGXS, PCS, and PMA functions include 8B/10B coding, 64B/66B coding, SerDes, WIS, Clock Multiplication Unit (CMU), and Clock and Data Recovery (CDR).

For WAN applications a WIS compliant framer with flexible clocking modes allows transmission of Ethernet traffic over a WAN network. On-chip clock synthesis is performed by the high-frequency low-jitter phase-locked loops for the PMD and XAUI output retimers. Individual PMD and XAUI clock recovery is performed on the device by synchronizing directly to their respective incoming data streams. Elastic buffers are provided to allow the XAUI and PMD interfaces to operate in asynchronous configuration. Only an external 155.52/156.25/159.38 MHz oscillator is required for the reference clock input.

  • Fully integrated CMU, CDR, SerDes, Limiting Amplifier, EyeOpener™, and 4-lane XAUI interface
  • WIS layer for EOS/WAN applications
  • Best performance for LAN (10-GbE) and WAN (OC-192 SONET) application
  • Universal design for 10-GbE, SONET, and 10 GFC for XENPAK/X2 module