BCM84884B0KFSBG

Controllers Overview

The Broadcom BCM84884B0KFSBG is a quad-port Ethernet CMOS transceiver designed for high-density network applications. It supports 5GBASE-T, 2.5GBASE-T, 1000BASE-T, and 100BASE-TX standards over Category 5e, 6, or 6A twisted-pair cabling. The device integrates digital adaptive equalizers, ADCs, phase-locked loops, line drivers, echo cancelers, and crosstalk cancelers to perform all physical-layer functions. It connects to MACs via USXGMII, XFI, 5000BASE-X, 2500BASE-X, and 1000BASE-X (SGMII) interfaces, supporting rates up to 5G on these links. The component operates within an ambient temperature range of 0°C to 70°C and utilizes a 484-pin BGA package measuring 23 mm × 23 mm.

Controllers Feature Summary

• Integrated quad-port Ethernet transceiver supporting 5GBASE-T, 2.5GBASE-T, 1000BASE-T, and 100BASE-TX standards
• Supports USXGMII, XFI, 5000BASE-X, 2500BASE-X, and 1000BASE-X (SGMII) MAC interfaces with 5G rate capability
• Includes Energy Efficient Ethernet (EEE) protocol with AutogrEEEn mode for legacy systems
• Features Enhanced Cable Diagnostics for detecting shorts, opens, and cable length

Controllers Applications

• Ethernet switch
• Ethernet server
• Fronthaul and backhaul of radio access network
• Industrial Ethernet

Controllers Procurement Notes

Verify the specific ordering suffix against official documentation before procurement. The KFSBG suffix indicates inclusion of a heat spreader and commercial temperature range (0°C to 70°C). Confirm RoHS compliance status and ensure the required 484-pin BGA footprint matches the design layout. Cross-reference the datasheet revision date to confirm current manufacturing specifications.

Controllers Selection Notes

Select this component when deploying quad-port Gigabit and Multi-Gigabit Ethernet solutions requiring integrated PHY functionality. Ensure the host system provides compatible USXGMII or XFI interfaces for MAC connectivity. Verify that the PCB layout accommodates the 23 mm × 23 mm BGA package and includes adequate thermal management for the heat spreader variant. Confirm power supply requirements match the specified 1.0V core and 1.2V/2.5V I/O voltages.

Controllers Part Context

The BCM84884 belongs to Broadcom's portfolio of high-performance Ethernet transceivers. This specific model targets multi-gigabit copper connectivity in data center and enterprise environments. It serves as a bridge between MAC controllers and RJ-45 magnetics, simplifying board design by integrating complex analog and digital signal processing components into a single chip.

Controllers Replacement Considerations

Check for alternative Broadcom models such as the BCM8489 series for different port counts or interface requirements. Verify compatibility with existing MAC controllers if substituting with other PHY devices. Ensure any replacement part supports the same IEEE 802.3bz standards and package dimensions.