BCM5324MIPBG

Overview

The BCM5324M is a single-chip L2+ managed switch integrating twenty-four 10/100 Fast Ethernet PHYs and two Gigabit media access controllers. It utilizes a non-blocking switch fabric with 3 Mb of shared packet buffer and control memory, supporting up to 8K MAC addresses and 4K VLAN entries. The device features four Class of Service (CoS) priority queues per port, IGMP snooping for Layer 2/3 multicast management, and advanced cable diagnostics. Power consumption is typically 3.5W, facilitated by an internal oscillator and embedded regulators.

Feature Summary

• Integrates twenty-four fully integrated 10/100 transceivers with Advanced Cable Diagnostics technology for fault detection.
• Supports flexible Layer 2+ features including Port-based and 802.1Q VLANs, spanning tree protocols, and traffic aggregation.
• Provides hardware support for SNMP and RMON via over 70 MIB counters for comprehensive network statistics.
• Includes two GMII/RGMII/TBI interfaces for high-speed uplink connectivity.

Applications

• Managed switches for multi-tenant/multi-dweller unit (MDU/MTU) environments
• WebSmart managed switch designs for small-to-medium businesses
• Industrial or commercial networking requiring integrated Fast Ethernet and Gigabit uplinks

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature range. Ensure compatibility with system voltage requirements, as the component includes embedded 2.5V and 1.2V regulators. Confirm interface availability for SPI or MDC/MDIO management connections during integration planning.

Selection Notes

Select this component when a high level of integration is required to replace traditional three- or four-chip switch solutions. It is suitable for applications needing extensive L2+ management features, such as QoS and VLAN segmentation, within a compact footprint. Consider the typical power consumption and thermal characteristics relative to the enclosure design constraints.

Part Context

This device belongs to the Broadcom ROBOSwitch family, designed based on field-proven industry standards. It represents a seventh-generation L2+ solution optimized for cost-effective, high-density switch deployments. The chip consolidates functions previously distributed across multiple components into a single 0.13 μm CMOS device.

Replacement Considerations

The BCM5322M offers similar functionality but replaces the Gigabit ports with MII interfaces. The BCM5321M provides sixteen Fast Ethernet ports instead of twenty-four. Verify pinout and register compatibility before substituting these variants in existing designs.