BCM53115SKPBG

Overview

The BCM53115SKPBG is a highly integrated, non-blocking 5-port 10/100/1000 Ethernet switch silicon manufactured by Broadcom Limited. Fabricated on a 65-nanometer process, the device integrates five Gigabit PHYs and two fully integrated GMII/RGMII/MII Inband Management Ports (IMP) for direct connection to CPUs or WLAN modules. It provides 5 Gbps of switching capacity with 128 KB packet buffer, supports 4K MAC addresses, and includes advanced Layer 2 features such as VLAN, QoS, and security protocols.

Feature Summary

• Integrates LoopDTech technology for automatic network loop detection without Spanning Tree Protocol overhead
• Includes CableChecker capability for advanced cable diagnostics based on the Broadcom Convergence Algorithm
• Supports IEEE 802.1Q-based VLAN with 4K entries and double tagging (Q-in-Q)
• Features four selectable QoS per port using SP and WRR scheduling

Applications

• Consumer electronic devices requiring ubiquitous Gigabit Ethernet deployment
• Home networking equipment and unmanaged switches
• WLAN routers and CPE/Gateway systems

Procurement Notes

Verify the specific suffix 'SKPBG' against official Broadcom documentation to confirm package dimensions and temperature range. The datasheet lists commercial packages as 17x17mm and industrial as 23x23mm. Ensure the ordering code matches the required thermal operating conditions and pinout configuration before finalizing procurement.

Selection Notes

Select this component for designs requiring a single-chip solution for 5-port Gigabit switching in consumer electronics. It is suitable for applications needing glueless CPU/WLAN connectivity via IMP ports. Consider the 65nm process node and available software support options like SmartPATH when evaluating system integration requirements.

Part Context

This part belongs to the BCM53115 family of smart switches designed for the consumer market. Variants within the family include the BCM53115M and BCM53115U, which differ in supported features such as BroadSync HD and software compatibility. The SKPBG designation indicates a specific package and temperature grade variant within this product line.

Replacement Considerations

Direct replacements are not explicitly listed in the provided datasheet. Evaluate other members of the BCM53115 family, such as the BCM53115M or BCM53115U, if feature sets align. Verify pin-to-pin compatibility and software driver availability before substituting.