Broadcom Single-port 10GBASE-T/5GBASE-T/2.5GBASE-T/1000BASE-T/100BASE-TX Ethernet CMOS transceiver - BCM84891L
The Broadcom BCM84891L is a single-port 10GBASE-T/5GBASE-T/2.5GBASE-T/1000BASE-T/100BASE-TX Ethernet CMOS transceiver. The device performs all physical-layer functions for 10GBASE-T, 5GBASE-T, 2.5GBASE-T, 1000BASE-T, and 100BASE-TX Ethernet on Category Cat5e, 6, or 6A twisted-pair cable.
The BCM84891L is a highly integrated solution that supports USXGMII, XFI, 5000BASE-R/5000BASE-X, 2500BASE-R/2500BASE-X, and 1000BASE-X (SGMII) MAC interfaces.
The BCM84891L features the Energy Efficient Ethernet (EEE) protocol. EEE enables the BCM84891L to auto-negotiate and operate with EEE-compliant link partners to reduce overall system power during low utilization of the link. Broadcom’s AutogrEEEn mode permits legacy systems to enjoy the power saving benefits of EEE.
The BCM84891L features Enhanced Cable Diagnostics, which detects common cable problems such as shorts, opens, and cable length.
Features
- Single-chip integrated single-port Ethernet transceiver-MAC to magnetics:
- XFI/10GBASE-KR, USXGMII, 5000BASE-R/5000BASE-X, 2500BASE-R/2500BASE-X, and 1000BASE-X (SGMII) MAC Interfaces
- IEEE 802.3bz, NBASE-T
- IEEE 1588-2008 PTP version 2 (Time Stamp)
- EEE on 10GBASE-T, 5GBASE-T, 2.5GBASE-T, 1000BASE-T, and 100BASE-TX
- Low electromagnetic interference (EMI) emissions
- Enhanced cable diagnostics
- Low-power, 0.8V CMOS core
- Device package: 8 mm × 8 mm BGA
Applications
- Broadband CPEs: PON ONU, DOCSIS eMTA, WiFi Router, Home Gateway
- WiFi6/6E/7 Access Point/Extender
- Enternet Switch, Server, Storage
- SFP+ Module
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