BCM8706

Description

The BCM8706 incorporates a receive equalizer that supports Electronic Dispersion Compensation (EDC) over multimode fiber (MMF). The EDC equalizer is designed for applications over MMF covering distances up to 220m of OM1, OM2, OM3 fiber as per the IEEE standard. The BCM8706 will be fully compliant with the IEEE802.3aq standard. In enhanced performance mode, the BCM8706 is capable of supporting up to 300m over OM1, OM2, and OM3 fiber.

An onboard microcontroller implements the control algorithm for the MMF EDC DSP Core. On-chip clock synthesis of BCM8706 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 the respective incoming data streams. An external 25-MHz or 156.25-MHz oscillator is required for the reference clock input.