The BCM5461S is a fully integrated 10/100/1000BASE-T Gigabit Ethernet transceiver optimized for low power and small footprint size to enable backplane and uplink applications. By lowering system cost and reducing power dissipation by nearly 30%, the BCM5461S enables a new class of cost-effective Gigabit Ethernet equipment, driving the delivery of Gigabit bandwidth to the desktop.The BCM5461S’s Digital Signal Processor based architecture and advanced power management techniques combine to achieve robust and low-power operation over the existing CAT 5 twisted-pair wiring. The BCM5461S architecture also meets the requirements of 802.3, 802.3u, and 802.3ab, but maintains the industry’s highest level of margin over IEEE requirements for Echo, NEXT, and FEXT. Low power is a key factor in implementing Gigabit small form factor NICs and uplinks and, at less than 700 mW per port, the BCM5461S has the industry's lowest power requirement. For NIC applications, support for Wake on LAN enables compliance with PCI 2.2 and PC99/PC2000. Also, the BCM5461S has extremely low EMI emissions, which reduces the design constraints required to meet EMI emission specifications.The BCM5461S supports GMII, RGMII, SGMII, SerDes, TBI, RTBI, and MII MAC interfaces. A unique feature of the BCM5461S 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. The BCM5461S monitors copper link and fiber signal detect status and, based on priorities set at initialization, automatically swaps either copper traffic or fiber traffic to the MAC/ switch.This device is another member of Broadcom's 0.13µ Gigabit copper PHY family, joining the BCM5404, BCM5414, BCM5421, BCM5421S, BCM5424, BCM5434, BCM5464, and BCM5464S. The 0.13µm process is the optimal process that offers the best performance, lowest cost, and lowest power for Gigabit copper solutions.