Dual 40-GbE/Octal 10-GbE QSFP+ XLPPI-to-XLAUI PHY
Low-power, low-latency PHY integrating retimer and equalizer functions supporting 40 Gigabit Ethernet (GbE) and 10 GbE applications.
In 40G mode, the BCM84328 supports two full-duplex 40 GbE ports (XLPPI-to-XLAUI/KR4) for SR4, LR4 and copper CR4 QSFP+ line-card applications. In 10G mode, the BCM84328 supports eight full-duplex 10 GbE ports (SFI-to-XFI/KR) for SR, LR and copper CR SFP+ line-card applications. On-chip clock synthesis is performed by a single low-cost 156.25 MHz reference clock via high-frequency, low-jitter, phase-locked loops (PLLs). Individual clock recovery is performed on the device by synchronizing directly to the respective incoming data streams.
- Dual 40G channels with two XLPPI-to-XLAUI/KR4 ports supporting SR4/LR4/CR4 QSFP+ retimer/equalization applications
- 10G Mode with eight independent 10G/1G SFI-to-XFI/KR channels supporting SR/LR/CR SFP+ retimer/equalization applications. Supports intermix of 1G and 10G operations on a per-lane basis
- Low-latency design
- Low-power retimer/equalizer PHY (~300 mW per 10G bidirectional port)