Product Brief
Key Features
• Single-chip 4× 50G PHY drives
200GbE over optics
− Client side: 4× 50G PAM-4
− Line side: 4× 50G PAM-4
• Supports 200GbE modes per IEEE
802.3bs draft 1.4 standards:
− Single 200GbE mode: 4× 50G
PAM-4 to 4× 50G PAM-4
• Supports two independent 100G
PCS streams
• Client-side interface is compliant to the CEI-28G/56G MR specification supporting medium reach (MR) channels
• Supports various reach/media types:
− MMF
− SMF
• Low-power 16-nm CMOS design
4× 50G
PAM-4
BCM81141
16-nm 200GbE PAM-4 PHY
(4:4)
Description
The Broadcom® BCM81141 is a single-chip, low-power, low-latency PAM-4
PHY that integrates retimer and equalizer functions to support 200GbE applications. In 200GbE mode, the BCM81141 retimes, adds FEC (optional), and equalizes 4× 50G PAM-4 host-side signals into 4× 50G PAM-4 line-side signals, which drive optical PAM-4 links inside next-generation modules, including QSFP56. The BCM81141 also provides 2× 100G applications with two 100G PCS streams. The BCM81141 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 BCM81141 is fabricated in advanced lowpower, 16-nm CMOS technology and is available in a RoHS-compliant package.
Applications
• 200GbE optical 4× 50G PAM-4 links for MMF/SMF
• 200GbE QSFP56 module form factors
Figure 1: BCM81141 Block Diagram
Optical Module
BCM81141
4× 50G
PAM-4
PAM-4 PHY Optics
Ordering Information
16-nm 200GbE PAM-4 PHY (4:4) BCM81141A0KRFBG
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81141-PB100 03.01.17
