BCM5325MA2IQMG

Overview

The BCM5325MA2IQMG is a five-port 10/100 Ethernet switch integrated into a single 0.18 µm CMOS device. It combines five transceivers, six media access controllers, a 128-KB packet buffer, and a non-blocking switch fabric. The device supports IEEE 802.3, 802.3u, and 802.3x specifications with full-duplex 10BASE-T/100BASE-TX Fast Ethernet transceivers. It features port-based VLAN, 802.1p QoS priority queues, and auto-negotiation. Management capabilities include MIB Autocast, SNMP, RMON, and Spanning Tree support via an SPI or E2PROM interface.

Feature Summary

• Integrates five 10/100 PHYs, MACs, and a 128-KB packet buffer for high silicon density
• Supports 802.1p QoS priority mapping and port-based VLAN segmentation
• Provides hardware support for SNMP, RMON, and Spanning Tree protocols
• Includes on-chip MIB registers accessible via serial management port

Applications

• Low-cost managed five-port 10/100 smart switches
• Remote office, branch office, and home office network hubs
• IP phone applications requiring voice traffic prioritization
• Multimedia applications utilizing video traffic classes

Procurement Notes

Verify the component status as End-of-Life (EOL) through official Broadcom discontinuance notifications before procurement planning. Confirm that the specific suffix IQMG matches the required package and temperature range specifications. Ensure compatibility with existing system designs given the product's discontinued lifecycle status.

Selection Notes

Select this component when designing cost-sensitive unmanaged or low-cost managed switches requiring high integration. It is suitable for applications needing plug-and-play connectivity without external CPUs. Consider its 128-pin PQFP package constraints and verify if the 128-KB buffer meets the specific buffering requirements of the target network topology.

Part Context

This part belongs to the Broadcom BCM5325M family of highly integrated five-port Fast Ethernet switches. It represents a fourth-generation switch-on-a-chip solution designed to lower overall system costs by eliminating the need for separate PHY components and reducing PCB layout complexity for standard Ethernet networking equipment.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify current availability and potential obsolescence risks associated with this discontinued component series.