BCM53128VIQLEG

Overview

The BCM53128VIQLEG is a managed Gigabit Ethernet switch chip from Broadcom's RoboSwitch family. It integrates an 8-port Fast Ethernet switch with built-in PHY transceivers, MACs, and a non-blocking switch fabric. The device supports IEEE 802.3az Energy-Efficient Ethernet (EEE) for power reduction. Key features include VLAN tagging, QoS traffic prioritization, port mirroring, and MAC address learning for up to 16K addresses. It utilizes a CMOS process and includes packet buffers and control memory for efficient data handling in enterprise and industrial networking environments.

Feature Summary

• Integrates high-speed switching functions including packet buffers, PHY transceivers, and MACs into a single CMOS device.
• Supports IEEE 802.3az Energy-Efficient Ethernet (EEE) specifications for reduced power consumption.
• Provides Layer 2+ management capabilities including VLAN, QoS, and port mirroring.
• Features a non-blocking switch fabric with automatic MAC address learning and aging.

Applications

• Industrial security switches
• Building automation network switches
• Enterprise access layer switches

Procurement Notes

Verify the specific suffix 'IQLEG' against official datasheets to confirm package type and temperature range. Ensure compatibility with required management interfaces such as RvMII/MII or RGMII. Confirm supply chain authenticity through authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when integrated L2+ management and EEE support are required for 8-port Fast Ethernet applications. Compare with the BCM53125 for GigE requirements or the BCM53282 for similar FE functionality. Evaluate PCB space constraints due to high integration of MACs and PHYs within the single chip.

Part Context

This part belongs to Broadcom's RoboSwitch series, designed for cost-effective and highly integrated switching solutions. It represents a tenth-generation L2+ Fast Ethernet architecture, combining multiple system functions into one device to simplify design and reduce bill of materials for network equipment manufacturers.

Replacement Considerations

The BCM53282 is a comparable managed 8-port Fast Ethernet switch from the same family. Verify pinout and register compatibility before substitution. Check if the alternative supports the specific management interface requirements of the target design.