BCM5388KPBG

Overview

The Broadcom BCM5388KPBG is an integrated Gigabit Ethernet switch device featuring eight ports. It includes four full-duplex 10/100/1000BASE-T transceivers compliant with IEEE 802.3ab and four RGMII interfaces for external PHY connectivity. The chip integrates eight MACs supporting 9 Kbyte Jumbo Frames, a nonblocking 8-Gigabit switch fabric, and 128-Kbyte packet buffer memory. Powered by a low-power 0.13 µm 1.2 V CMOS core, it consumes less than 3.8W of power. The device operates within a 324-pin FBGA package measuring 19 mm x 19 mm.

Feature Summary

• Integrates four copper transceivers and four RGMII interfaces into a single highly integrated silicon solution.
• Supports advanced traffic management through four 802.1p QoS or DiffServ/TOS priority queues.
• Enables network segmentation via support for up to 4k VLANs and automatic address learning.
• Facilitates high-performance server connections through Jumbo Frame support up to 9 Kbytes.

Applications

• Small Office/Home Office (SOHO) switches
• Subnetwork applications requiring compact form factors
• Smart unmanaged switch designs

Procurement Notes

Verify the specific ordering suffix KPBG against official datasheets to confirm package type and temperature range. Confirm RoHS compliance status directly from the manufacturer's documentation before procurement. Ensure supply chain sources provide valid traceability for this component.

Selection Notes

Select this component when designing cost-sensitive Gigabit Ethernet switches requiring minimal external components. It is suitable for applications needing integrated copper ports alongside flexible fiber or copper expansion via RGMII. Consider its low power consumption and fanless operation requirements during thermal design.

Part Context

The BCM5388 belongs to Broadcom's seventh-generation switch-on-chip family. It represents a high level of integration for 8-port devices, combining switching fabric, MACs, and PHYs. This generation targets reduced system costs and smaller physical footprints compared to previous discrete solutions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with existing PCB layouts and firmware if considering alternative Broadcom switch controllers.

FAQ

How many integrated copper transceivers does the BCM5388 contain?

The device contains four full-duplex 10/100/1000BASE-T transceivers.

What is the maximum frame size supported by the BCM5388?

The media access controllers support Jumbo Frames up to 9 Kbytes.

Can the BCM5388 operate without a CPU in unmanaged applications?

Yes, CPUs are not required to initialize and run the device in cost-sensitive unmanaged applications.