BCM5464SRA1KFBG: A Comprehensive Technical Overview of Broadcom's Gigabit Ethernet Transceiver

The BCM5464SRA1KFBG is a highly integrated, low-power single-port Gigabit Ethernet transceiver from Broadcom, designed to deliver robust performance in a wide array of networking applications. This PHYceiver device serves as a critical interface between the physical layer (the Ethernet cable) and the data link layer (the MAC controller in a switch, router, or network interface card), facilitating high-speed data transmission over copper cabling.

Fabricated using advanced process technology, the BCM5464SRA1KFBG is engineered for exceptional power efficiency and signal integrity. It fully complies with the IEEE 802.3ab standard for 1000BASE-T Gigabit Ethernet, ensuring interoperability with a vast ecosystem of networking equipment. A key feature is its support for Energy Efficient Ethernet (EEE) as defined by the IEEE 802.3az standard. This technology allows the transceiver to enter a low-power idle state during periods of low data activity, dramatically reducing power consumption by up to 50% or more without sacrificing operational readiness, a crucial factor for modern green data centers and power-sensitive applications.

The device integrates all necessary physical-layer functions, including PMD (Physical Medium Dependent) sublayers, PMA (Physical Medium Attachment), and PCS (Physical Coding Sublayer). It features sophisticated Digital Signal Processing (DSP) capabilities for echo cancellation, cross-talk suppression, and equalization, enabling reliable data recovery over standard Category 5e unshielded twisted-pair (UTP) cabling at lengths up to 100 meters. Its auto-negotiation function automatically selects the highest possible performance mode (10/100/1000 Mbps) and configures duplex settings with the link partner.

The transceiver interfaces with the MAC layer through a standard GMII (Gigabit Media Independent Interface) or RGMII (Reduced Gigabit Media Independent Interface), offering design flexibility for various system architectures. It is available in a compact, surface-mount package, making it suitable for space-constrained designs like enterprise switches, routers, network attached storage (NAS) systems, and embedded computing platforms.

ICGOOODFIND: The Broadcom BCM5464SRA1KFBG stands out as a highly reliable and energy-optimized solution for Gigabit Ethernet connectivity. Its industry-standard compliance, advanced power management via EEE, and robust DSP for signal integrity make it a cornerstone component for designing efficient and high-performance networked systems.

Keywords: Gigabit Ethernet Transceiver, Energy Efficient Ethernet (EEE), IEEE 802.3az, Signal Integrity, RGMII Interface