BCM5228 PRODUCT Brief ® 1 0 / 1 0 0 B A S E - T X / F X O C TA L - Φ™ T R A N S C E I V E R B C M 5 2 2 8 S U M M A R Y F E AT U R E S • Single-chip, eight-port Fast Ethernet transceiver • HP Auto-MDIX • Low-power 2.5V CMOS technology • Compatible with 2.5V I/O and 3.3V I/O • Reduced Media Independent Interface (RMII) • Serial Media Independent Interface (SMII) • Fully integrated digital adaptive equalization • Up to 150 meters of error-free operation • Full-duplex support • Twisted-pair or fiber support on any or all ports • Interrupt output capability • 208-pin PQFP or 256-pin FBGA package • Proven Broadcom proprietary All-DSP Digi-ΦΦ™ O F B E N E F I T S • Target usage: Fast Ethernet switches • Smallest footprint per port available • HP Auto-MDIX detects and corrects cabling errors • Measures 17 mm × 17 mm for eight ports • Single-chip device contains eight independent Fast Ethernet transceivers • Performs all physical layer interface functions for 100BASE-TX full- or half-duplex Ethernet on Category 5 unshielded twisted-pair (UTP) cable and 10BASE-T full-duplex or half-duplex Ethernet on Category 3, 4, or 5 UTP cable • Permits transmission over fiber-optic cabling when paired with an external fiber-optic transceiver • Compliant with IEEE 802.3 standard • IEEE 1149.1 (JTAG) scan chain support • Three LED indicator pins per port • Onboard cable length meter reports the link distance architecture for each port 24-Port 10/100 Switch BCM5421 Gigabit PHY STRATASWITCH™ GMII GMII EPIC EPIC EPIC RMII RMII RMII BCM5228 BCM5228 BCM5228 OCTAL-F OCTAL-F OCTAL-F Quad Magnetics Quad Magnetics RJ45 Stacked 2×6 Quad Magnetics Quad Magnetics Quad Magnetics RJ45 Stacked 2×6 Quad Magnetics BCM5421 Gigabit PHY