BCM5325MA2KQMG

Overview

The Broadcom BCM5325MA2KQMG is a highly integrated five-port 10/100 Ethernet switch device built on 0.18 µm CMOS technology. It combines five full-duplex Fast Ethernet transceivers compliant with IEEE 802.3u, six media access controllers adhering to 802.3x, and a 128-KB packet buffer within a single package. The component features a non-blocking switch fabric and supports up to 2K MAC addresses for automatic learning and aging. Typical power consumption is less than 1.4W. It includes an internal oscillator circuit and offers flexible interface options via MII or a 7-wire connection for additional ports.

Feature Summary

• Integrates five 10BASE-T/100BASE-TX transceivers, MACs, and a 128-KB packet buffer into a single chip.
• Supports 802.1p QoS priority queues and port-based VLAN configuration via SPI or E2PROM interfaces.
• Includes hardware support for SNMP, RMON, Spanning Tree, and the proprietary MIB Autocast function.
• Features on-chip HP auto-MDI/MDIX capability to automatically detect and correct crossover cable connections.

Applications

• Low-cost managed five-port smart switches
• Cost-sensitive unmanaged network switches
• Remote office, branch office, and home office networking equipment

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature range. Confirm current availability status as components may be subject to discontinuation. Ensure compatibility with existing PCB layouts and management software requirements before procurement.

Selection Notes

Select this component for designs requiring high silicon integration to minimize external components. It is suitable for applications needing basic Layer 2 switching with optional low-cost management capabilities. Consider the 128-pin PQFP package constraints and verify that the 1.4W typical power consumption fits the thermal design of the target enclosure.

Part Context

This part belongs to the Broadcom BCM5325 series of Fast Ethernet switches. It represents a fourth-generation switch-on-a-chip solution designed to lower system costs and form factors. The device is intended to replace multi-component switch solutions by integrating PHY, MAC, and switching fabric functions.

Replacement Considerations

Check for direct pin-compatible upgrades within the same family. Verify if newer generations offer improved power efficiency or additional port counts while maintaining the required interface standards.