BCM81128中文资料16nm 100GbE PAM-4 PHY (4:2) or (2:2)数据手册Broadcom规格书

描述 Description

The Broadcom BCM81128 is a single-chip, low-power, low-latency PAM-4 PHY that integrates retimer and equalizer functions to support 100GbE applications.  In 100GbE mode, the BCM81128 retimes, adds FEC (optional), and equalizes 4 x 25G NRZ or 2 × 50G PAM-4 host-side signals into 2 × 50G PAM-4 line-side signals, which drive optical PAM-4 links inside next-generation modules, including QSFP28. The BCM81128 also provides 1 × 100G applications with a single 100G PCS stream.  The device also supports KP4 FEC, FEC bypass capability, and Broadcom's proprietary high gain Super-FEC (S-FEC) for extended reach applications.  The BCM81128 is compliant to IEEE standards with KP4 FEC and FEC bypass capability. On-chip clock synthesis is performed by a low-cost 156.25 MHz reference clock via high-frequency, low jitter phase-locked loops (PLLs).  The BCM81128 is fabricated in advanced low-power 16 nm CMOS technology and is available in a RoHS-compliant package.