Spot sales of BCM5228UA4IPFG 10/100BASE-TX/FX Octal Transceiver QFP

Product Descriptions

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. The BCM5228 complies with the IEEE 802.3 specification, including the auto-negotiation subsections.

The effective use of digital technology in the BCM5228 design results in robust performance over a broad range of operating scenarios. Problems inherent to mixedsignal implementations (such as analog offset and onchip noise) are eliminated by employing field-proven digital adaptive equalization and digital clock recovery techniques.

Product Features

• 10BASE-T/100BASE-TX/FX IEEE 802.3u compliant

• Single-chip octal physical interface-RMII to magnetics

• Reduced Media Independent Interface (RMII)

• Option-Serial Media Independent Interface (SMII)

• Option-Source Synchronous SMII (S3MII)

• Fully integrated digital adaptive equalizers

• 125-MHz clock generator and timing recovery

• On-chip multimode transmit waveshaping

• Edge-rate control eliminates external filters

• Integrated baseline wander correction

• HP Auto-MDIX

• Cable length indication

• Cable noise level indication

• IEEE 802.3υ-compliant auto-negotiation

• Shared MII management interface up to 25 Mbps

• Serial LED status pins

• Programmable parallel LED pins

• Interrupt output capability

• Loopback mode for diagnostics

• IEEE 1149.1 (JTAG) and NAND chain ICT support

• Low-power, dual-supply 2.5V/3.3V CMOS technology

• Compatible with 2.5V/3.3V I/O

• 208-pin PQFP and 256-pin FPBGA packages

Product Applications

• Fast Ethernet switches

Product Photos

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