Dual 100G MACSec PHY

Currently Viewing:

The Broadcom BCM82391 is a single-chip low-power, high-density PHY integrating IEEE 802.1AE MACSec GCM-AES-256b encryption, IEEE 1588 and retimer functions supporting 100-Gigabit Ethernet (GbE), 50 GbE, 40 GbE, 25GbE & 10GbE applications. In 100G, the BCM82391 supports two full-duplex 100G ports for SR4, LR4, CR4, ER4 applications. 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 BCM82391 is available in a RoHS-compliant package.


  • Dual 100G port with CAUI4-to-CAUI4 supports retimer/equalization/MACSec encryption functions in SR4, LR4, CR4, ER4 applications
  • Supports IEEE 1588 timestamping and ITU-T Y.1731 with Sync-E recovered clocks
  • Support 100G CL91 FEC for 802.3bj and 25G CL74/108 FEC for 802.3by applications
  • Integrated host side AC-coupling caps 
  • Line-side and client-side loopbacks
  • Dual Supply - 1.0V and 1.8V/2.5V/3.3V


  • Support IEEE 802.1AE (dataplane) and IEEE 802.1AEbw-2013, including GCS-AES-256 and GCM-AES-128
  • MACSec encryption on high-speed 10G/25G/40G/50G/100G front panel line cards

Lifecycle Status


Specification Value
Lifecycle Active
Distrib. Inventory No
SerDes / GPHY
I/O Bandwidth (Gbps)
Bandwidth UOM
Package 33x33 mm
PHY Type 100GE
I/O Controller
Bus Interface
Transfer Rates
External Memory Interfaces 8-bit and 16-bit Flash, w/ 6 Chip Selects SRAM, NVSRAM
ASIC 57304
Link-Speeds 50/40/25/10Gb
Ports 2
TruFlow™ Yes
TruManage™ Yes
Smart Congestion Control No
RoCEv2 No
Multi-Host No
Smart NICs No
Product Brief28 i