Broadcom BCM81356
BCM81356 is a single-chip 16 × 56 Gb/s full-duplex PHY. It supports both the PAM-4 and NRZ data formats. It supports various operation modes, such as Retimer, Forward, and Reverse Gearbox modes.APPLICATIONS
● ASIC-to-module interface 16 × 56 Gb/s front-panel and backplane applications● High-density 10G, 25G, 40G, 50G, 100G, 200G, and 400G front-panel and backplane line-card applications
FEATURES
● Host-side interface: – Long reach (LR): ~30 dB – High-performance analog SerDes● Line-side interface: – KR: >30 dB – CR: >30 dB – Chip-to-module (C2M) – High-performance DSP SerDes
● Retimer, Forward, and Reverse Gearbox modes
● Flexible crossbar
● Supports forward error correction (FEC)
● Supports Mux and Broadcasting modes
● supports 400G-CR8 mode
● Integrated AC-coupling capacitors at host-side and line-side receiver
● Multiple standard and line rate support for both PAM-4 and NRZ
● Continuous auto-adaptive equalizer
● Line- and system-side loopbacks
● PRBS generator/error checker
● Eye monitoring per lane accessed through MDIO
● Dual low-cost REFCLK inputs
● Recovered clock output
● Interoperates with Broadcom ASIC and merchant switch silicon
● Low-power 16-nm CMOS design Broadcom 81356-DS203 July 12, 2021 BCM81356 Data Sheet Figure 1: BCM81356 Block Diagram Host ASIC Lane 0 56G RX Lane 0 56G TX . . . . . .