The BCM5488S consists of eight complete 10/100/1000BASE-T Gigabit Ethernet transceivers integrated on a single monolithic CMOS chip. The BCM5488S 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 percent, the BCM5488S enables a new class of cost-effective Gigabit Ethernet equipment, driving the delivery of Gigabit Ethernet bandwidth to the desktop.The BCM5488S DSP-based architecture and advanced power management techniques combine to achieve robust and low-power operation over existing Category 5 twisted-pair wiring. The BCM5488S architecture not only meets the requirements of IEEE 802.3, IEEE 802.3u, and IEEE 802.3ab but also maintains the industry’s highest level of margin over IEEE requirements for echo, near-end crosstalk (NEXT), and far-end crosstalk (FEXT). Low power is the key to implementing high-density Gigabit Ethernet switches, and the BCM5488S has the lowest power in the industry at less than 625 mW per port. In addition, the BCM5488S has extremely low EMI emissions, which reduces the design constraints required to meet EMI radiation specifications.The BCM5488S supports the SGMII and SerDes MAC interfaces. The SGMII and serial SerDes interfaces are reduced pin-count (6 and 4, respectively, versus 25) versions of the GMII. These reduced pin-count interfaces simplify design and lower system cost by reducing the number of layers required to route high density solutions. In addition, these interfaces allow fewer pins at the MAC/switch, which reduces the MAC/ switch cost by enabling smaller die sizes than would be possible with full GMII.