BCM53156XMB1KFBG

Overview

The Broadcom BCM53156XMB1KFBG is a Layer 2 Ethernet switch based on the Robo 2 architecture. It features up to eight 10/100/1000BASE-T ports with integrated GPHYs, one QSGMII interface, and two 10G XFI interfaces. The device includes an ARM Cortex-M7 CPU operating at up to 400 MHz and supports Unmanaged, Web-Managed, and Managed modes. Key specifications include a 1 MB packet buffer, 16K MAC address table, 1K multicast group support, and 4K VLANs. It operates within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Integrated ultra-low-power Gigabit PHYs for copper connectivity
• Dual 10G XFI uplinks with KR support
• On-chip ARM Cortex-M7 processor for protocol handling
• Support for IEEE 802.1BR port extender configurations

Applications

• SMB switches with 10G uplinks
• Enterprise switches, routers, and security appliances
• Next-generation Industrial Ethernet switches
• Service Provider access equipment

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature grade. Ensure compatibility with required management software versions. Confirm lead times directly with authorized distributors as availability fluctuates. Validate that the component meets all necessary regulatory standards for the target deployment region.

Selection Notes

Select this model when high-density Gigabit access combined with 10G uplink capacity is required. The integrated PHYs reduce external component count compared to solutions requiring separate transceivers. Consider the on-chip M7 core if advanced L2/L3 features or custom protocol implementations are needed without external processors.

Part Context

This component belongs to the Broadcom BCM53154/BCM53156/BCM53158 family. These devices share the same Robo 2 silicon but differ in port counts and interface configurations. The BCM53156 specifically targets applications requiring eight copper ports alongside dual 10G optical or electrical uplinks.

Replacement Considerations

The BCM53154 and BCM53158 are part of the same product family and may serve as functional alternatives depending on port requirements. Verify pinout compatibility and firmware support before substitution.