Broadcom’s 9-port Ethernet switch solution supports the IEEE 802.3az specification for Energy Efficient Ethernet™ (EEE). The BCM53108 is designed to be the optimal solution for unmanaged switch/router and gateway appli-cations by incorporating lower power consump-tion, more features, and pin compatibility. Building upon industry-leading 65 nm RoboSwitch™ architecture, the BCM53108 can lower the power consumption by an additional 10 percent compared to the previous-generation device in active mode.

The BCM53108 also supports Broadcom's green technology that automatically detects short cable lengths to scale power or turn the port off com-pletely when not used. In addition, the BCM53108 includes an integrated microcontroller to support all the power management features in the device. The microcontroller can also be used to support basic packet processing features, such as QoS and security, as it has the ability to transmit and receive.

The BCM53108 can interconnect with other devices using the dedicated uplink port that sup-ports multiple interfaces including RGMII, GMII, MII, and Turbo MII. Specifically architected to support gateway applications, the BCM53108 can bypass one internal PHY to support two direct GMAC connections, thereby increasing the num-ber of ports available for gateway requirements. The additional GMAC connection may also be used to stack multiple BCM53108 parts to increase the number of 10/100BASE-TX ports.

The BCM53108 is packed with features, including VLAN, VLAN double tagging, per port QoS, jumbo frame support, DoS prevention engine, per port rate control, and MIBs management. The BCM53108 solidifies Broadcom’s leadership in Ethernet switching technology by delivering an optimized solution for the unmanaged, switch/router, and gateway markets.

• IEEE 802.3az Energy Efficient Ethernet™-compliant, highly integrated 9-port switch

• Integrated on-chip microcontroller to manage low-power modes automatically and support packet processing features such as QoS and Security

• Seven 10/100 media access controllers

• Two 10/100/1000 media access controllers

• Power-saving green technology

• 8-port 10/100 transceivers for 100BASE-TX

• Supports RGMII, MII, RvMII, TMII, and GMII on the uplink port

• Saves more than 70 percent power in EEE mode compared to non-EEE mode.

• Individual ports can automatically detect short cable lengths and scale power appropriately.

• Unused ports can be intelligently powered down to conserve power.

• Very low power consumed in active mode (with full traffic on all ports).

• Ability to bypass one internal PHY to support two direct GMAC connections (supported with BCM53108V).

OVERVIEW FEATURES

BENEFITS

BCM531089-Port Integrated Energy Efficient Ethernet™ Switch

• Multiport Fast Ethernet IEEE 802.3az Energy Efficient Ethernet™ (EEE)-compliant switch

• Eight integrated 10/100BASE-TX transceivers

• Seven 10/100 MACs + Two 10/100/1000 GMACs

• Integrated on-chip microcontroller to manage low-power modes automatically

• Power-saving Green technology

• Supports RGMII, MII, RvMII, TMII, and GMII on uplink ports

• Ideal for the growing Industrial Ethernet and Smart Buildings Markets, as well as for traditional unmanaged switch/routers and gateways

BCM53108

Unmanaged Switch/router

Home Gateway

Industrial Ethernet

© 2014 Broadcom Corporation. All rights reserved. Broadcom®, the pulse logo, Connecting everything, the Connecting everything logo, and RoboSwitch™ are among the trademarks of Broadcom Corporation and/or its affiliates in the United States, certain other countries and/or the EU. Any other trademarks or trade names mentioned are the property of their respective owners.

ABOUT BROADCOM

Broadcom Corporation (NASDAQ: BRCM), a FORTUNE 500® company, is a global leader and innovator in semiconductor solutions for wired and wireless communications. Broadcom® products seamlessly deliver voice, video, data, and multimedia connectivity in the home, office, and mobile environments. With the industry’s broadest portfolio of state-of-the- art system-on-a-chip and embedded software solutions, Broadcom is changing the world by Connecting everything®. For more information, go to www.broadcom.com.

53108-PB100-R • February 26, 2014

BCM53108 Block Diagram

10/100 PHY MAC

10/100 PHY MAC

10/100 PHY MAC

10/100 PHY MAC

10/100 PHY MAC

10/100 PHY MAC

10/100 PHY MAC

10/100 PHY GMAC

GMAC

8051

Packet BufferMemory

Registers

Address Management

LED Interface

ProgramInterfaces

TRD[1:0]_+/- 0

TRD[1:0]_+/- 1

TRD[1:0]_+/- 2

TRD[1:0]_+/- 3

TRD[1:0]_+/- 4

TRD[1:0]_+/- 5

TRD[1:0]_+/- 6

TRD[1:0]_+/- 7 BCM53108 Only

GMII/RGMII/MII/RvMII/TMII

GMII/RGMII/MII/RvMII/TMII BCM53108V Only

ORDERING INFORMATION Part Number

8-port 10/100BASETX + 1-port Gigabit-Ethernet EEE-compliant switch BCM53108

7-port 10/100BASETX + 2-port Gigabit-Ethernet EEE-compliant switch BCM53108V