BCM5325EIQMG

Overview

The BCM5325EIQMG is a six-port managed Fast Ethernet switch from Broadcom's ROBOswitch family, designed for high integration in L2+ networking applications. It integrates five 10BASE-T/100BASE-TX compliant transceivers and six Media Access Controllers (MACs) within a single 0.18-µm CMOS device. The component features a non-blocking switching fabric, a 1-Mbit packet buffer, and 512-Kbit control memory. It supports IEEE 802.3, 802.3u, and 802.3x standards with auto-negotiation capabilities. Power consumption is maintained below 1.0W using 3.3V and 2.5V supplies. The device operates within the industrial temperature range and is housed in a 128-pin MQFP package.

Feature Summary

• Integrated Layer 2+ management features including 802.1Q VLAN support with 16 entries, 802.1p QoS classification, and IGMP snooping.
• Supports advanced security protocols such as 802.1x EAPOL filtering and programmable per-port storm control mechanisms.
• Includes flexible interface options with MII or reversed MII connectivity for CPU access and external WAN port configurations.
• Provides comprehensive traffic management through four priority queues, port mirroring, and automatic MAC address learning.

Applications

• Managed five-port 10/100 desktop switches
• SOHO broadband gateways and routers
• Industrial IoT network edge devices

Procurement Notes

Verify the specific suffix IQMG against official datasheets to confirm the exact operating temperature range and package variant. Confirm availability status as this component may be subject to discontinuation notices. Ensure compatibility with existing PCB footprints for the 128-pin MQFP package during procurement planning.

Selection Notes

Select the BCM5325EIQMG when a managed switch solution with integrated PHYs is required for cost-sensitive designs. Compare against the BCM5325M for standard commercial grade requirements or the BCM5325U for extended temperature ranges. Evaluate the BCM5325F if internal PHY-MUX flexibility for WAN interfaces is necessary.

Part Context

This component belongs to the Broadcom BCM5325 series of highly integrated Fast Ethernet switches. It serves as an enhanced version of the industry-leading BCM5325M, offering additional Layer 2+ management capabilities while maintaining pin compatibility. The series is widely utilized in embedded networking systems requiring compact form factors and low power consumption.

Replacement Considerations

The BCM5325E is pin-compatible with the BCM5325M. For industrial temperature variants, consider the BCM5325U. If internal PHY-MUX functionality is required, evaluate the BCM5325F. Verify that any replacement maintains the 128-pin MQFP package dimensions.