BCM85828中文资料5-nm CMOS 800G (4:4) PAM-4 Transceiver PHY with Integrated Laser Driver数据手册Broadcom规格书

描述 Description

The Broadcom® BCM85828-DIE is the industry’s highest-performance and lowest-power 200G/lane PAM-4 PHY. It enables 1.6T DR8 and 800G DR4 pluggable transceivers for next-generation AI/ML clusters and Ethernet networking of hyperscale data centers.The BCM85828-DIE when paired with the BCM85826-DIE, helps reduce routing congestion and makes power network design simpler on the 1.6T paddle cards.The BCM85828-DIE leverages the market-leading 5-nm PAM-4 PHY transceiver technology platform, already proven with the BCM85822.The advanced Broadcom DSP technology and equalization techniques compensate for optical impairments while delivering best-in-class module performance in BER and power consumption.The BCM85828-DIE incorporates a highly differentiated feature set, including multiple line-side FEC options:Bypass modeSegmented modeConcatenated modeThis feature set also includes client-side switch ASIC SerDes interoperability to provide an unmatched competitive advantage to the market.The BCM85828-DIE is a monolithic 800G (4:4) PAM-4 DSP. It converts four lanes of 212.5 Gb/s from the client side into four lanes of 212.5 Gb/s to drive next-generation high-density optical PAM-4 links inside an octal small formfactor pluggable (OSFP) modules.The BCM85828-DIE also features crossbar on the client side for easier routing in the PCBs.The on-chip clock synthesis is performed by a low-cost 312.5/625-MHz reference clock through high-frequency, low-jitter phase-locked loops (PLLs).

特性 Features

• Supports various chip modes:
• 4:4 retimer mode with client 212.5G PAM-4 and line 212.5G PAM-4
• 4:4 retimer mode with client 212.5G PAM-4 and line 226.875G PAM-4 with IEEE-compliant (128,120) Hamming inner code
• Backward 4:4 retimer modes comparability to 106G/lane and 53G/lane Ethernet and HDR/NDR interface