BCM54640B0KFBG Quad-Port Gigabit Ethernet Transceiver Data Sheet

The BCM54640B0KFBG is a highly integrated quad-port Gigabit Ethernet transceiver designed by Broadcom to deliver robust performance and energy efficiency for high-density networking applications. This advanced transceiver combines four independent Gigabit Ethernet transceivers into a single, compact package, making it an ideal solution for network switches, routers, network interface cards (NICs), and embedded systems requiring multiple ports in a constrained space.

Each of the four ports supports 10/100/1000 Mbps operation, complying with the IEEE 802.3ab (1000BASE-T) and IEEE 802.3u (100BASE-TX) standards. The device utilizes advanced digital signal processing (DSP) technology to ensure reliable data transmission over standard Category 5/6/6a unshielded twisted-pair (UTP) copper cabling. Key features include auto-negotiation and auto-MDI/MDIX capabilities, which simplify installation by automatically selecting the optimal data rate and correcting cable polarity without manual intervention.

Power efficiency is a critical design focus of the BCM54640B0KFBG. It incorporates Energy-Efficient Ethernet (EEE) as defined by the IEEE 802.3az standard, significantly reducing power consumption during periods of low data activity. This makes the transceiver particularly suitable for modern eco-conscious data centers and enterprise networks. Additionally, the device supports Wake-on-LAN (WoL) functionality, enabling remote system wake-up from a low-power state.

The transceiver is built with a high level of integration, reducing the need for external components and simplifying board design. It features baseline wander compensation and advanced echo and crosstalk cancellation, ensuring signal integrity even in electrically noisy environments. The interface is typically connected to a MAC via a standard RGMII (Reduced Gigabit Media Independent Interface) or SGMII (Serial Gigabit Media Independent Interface), providing design flexibility.

Housed in a green, halogen-free, 196-pin BGA package, the BCM54640B0KFBG is designed for reliability and manufacturability. It operates over industrial temperature ranges, ensuring stable performance in various environmental conditions.

ICGOOODFIND: The BCM54640B0KFBG stands out as a powerful, integrated solution for high-port-count Gigabit Ethernet applications, offering a blend of performance, power efficiency, and design simplicity that is critical for next-generation networking hardware.

Keywords:

Gigabit Ethernet Transceiver

Energy-Efficient Ethernet (EEE)

IEEE 802.3ab

Auto-Negotiation

Quad-Port Integration