BCM5482

Description

The BCM5482 is a new dual port Gigabit Ethernet (GbE) transceiver BCM5482 designed specifically for IP phone applications. Since IP phones require dual ports to support both voice and data simultaneously, Broadcom's new transceiver BCM5482 is a great companion chip to its existing IP phone product family, enabling a two-chip Gigabit IP phone solution. With corporate PCs and network infrastructures transitioning to faster GbE speeds (from Fast Ethernet), the combination of the new Broadcom® dual port transceiver and IP phone chip upgrades the IP phone to faster GbE speeds as well, removing the phone as a network bottleneck.

As networks migrate to Gigabit Ethernet, the current generation of Fast Ethernet (FE) IP phones act as a bottleneck to PC data traffic as the IP phone resides between the network and the PC, supporting both voice calls and data using one Ethernet connection. In this configuration, BCM5482 dictates the speed of the PC data traffic. The widespread adoption of GbE-enabled PCs by the enterprise market, coupled with the increase in corporate upgrades to support GbE, has created a critical need for IP phones to support Gigabit Ethernet to prevent bottlenecks between the network and the PC.

A member of Broadcom's third generation of GbE PHYs, the BCM5482 consists of two complete 10/100/1000BASE-T GbE transceivers on a single monolithic CMOS chip. The BCM5482 is optimized for low power and small footprint size to reduce design complexity for space-constrained IP phone applications. The BCM5482 supports the industry's lowest power at 600 mW per port.