The BCM5464S consists of four complete 10/100/1000BASE-T Gigabit Ethernet transceivers integrated on a single monolithic CMOS chip. The BCM5464S is optimized for low power and small footprint size to enable high port-density applications. By lowering system cost and reducing power dissipation by nearly 30%, the BCM5464S enables a new class of cost-effective Gigabit Ethernet equipment, driving the delivery of Gigabit bandwidth to the desktop.
A unique feature of the BCM5464S is its ability to support both copper and fiber networks, with an integrated SerDes PHY interface that can connect directly to a fiber optic module. Switching between copper and fiber media can be accomplished either automatically or through software control. For legacy switch/MACs, the BCM5464S supports the IEEE 802.3 standard GMII and Reduced GMII (RGMII), with advanced timing mode. Broadcom's advanced timing solution provides a DLL-based delay for receive and transmit clocks, thus eliminating the need for timing delay traces required by the RGMII specification.