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Data Sheet
BCM5228
10/100BASE-TX/FX Octal-Φ™ Transceiver
GENERAL DESCRIPTION
FEATURES
The BCM5228 is an octal 10/100BASE-TX/FX transceiver targeted at Fast Ethernet switches. The device contains eight full-duplex 10BASE-T/100BASETX/FX Fast Ethernet transceivers, each of which perform all of the physical layer interface functions for 10BASE-T Ethernet on Category 3, 4, or 5 unshielded twisted-pair (UTP) cable and 100BASE-TX Fast Ethernet on Category 5 UTP cable. The 100BASE-FX is supported at each port through the use of external fiberoptic transmit and receive devices.
The BCM5228 is a highly integrated solution combining digital adaptive equalizers, ADCs, phase locked loops, line drivers, encoders, decoders, and the required support circuitry into a single monolithic CMOS chip.