BCM5208R

Features:

* 10BASE-T/100BASE-TX IEEE 802.3u-compliant
* Full-duplex support in all modes
* IEEE 802.3u-compliant auto-negotiation
* Media Independent Interface (MII) for each port
* Shared MII serial management interface
* Fully integrated digital adaptive equalizers
* 125-MHz clock generator and timing recovery
* Integrated multimode transmit wave shaping
* Integrated baseline wander correction
* LED status pins
* Loopback mode for diagnostics
* IEEE 1149.1 (JTAG) support
* 3.3V power supply
* 208-pin PQFP package




Description

The BCM5208R is a monolithic CMOS integrated circuit containing four transceivers that each perform all the physical layer interface functions for 10BASE-T Ethernet on category(CAT) 3, 4, 5 unshielded twisted pair (UTP) cable and 100BASE-TX Ethernet on CAT5 UTP cable.

The BCM5208R employs the use of digital signal processing and full custom circuit design techniques to create a highly integrated and robust physical layer solution for Fast Ethernet switches. BCM5208R complies with the IEEE 802.3u physical layer Media Independent Interface (MII) and auto-negotiation subsections, providing compatibility with all industry-standard Fast Ethernet MAC chips.

The BCM5208R is a cost reduced version of the BCM5208. BCM5208R can be substituted for the BCM5208 in most 10/100 designs.