BCM5238 PRODUCT Brief ® 1 0 / 1 0 0 B A S E - T X O C TA L - Φ™ T R A N S C E I V E R B C M 5 2 3 8 F E AT U R E S S U M M A R Y • Single-chip, eight-port Fast Ethernet transceiver • Low-power 1.8V CMOS technology • Serial Media Independent Interface (SMII) • Source Synchronous SMII (SSSMII) • HP Auto-MDIX automatic crossover • Compatible with 2.5V I/O and 3.3V I/O • Fully integrated digital adaptive equalization • Up to 150 meters of error-free operation • Full-duplex support • Interrupt output capability • 128-pin PQFP or 256-ball BGA package • Proven Broadcom proprietary all-DSP Digi-Φ™ O F B E N E F I T S • Target usage: Fast Ethernet switches. • Lowest per port power solution available: < 215 milliwatts per port. • Smallest footprint per port available. • Measures 14 mm ∞ 20 mm for eight ports. • Single-chip device contains eight independent Fast Ethernet transceivers. • Performs all physical layer interface functions for 100BASE-TX full-duplex or half-duplex Ethernet on Category 5 unshielded twisted-pair (UTP) cable and 10BASE-T full or half-duplex Ethernet on Category 3, 4, or 5 UTP cable. • Compliant with IEEE 802.3 standard. • IEEE 1149.1 (JTAG) scan chain support. • Two LED indicator pins per port. architecture 24-Port 10/100 Switch BCM5421 Gigabit PHY BCM5421 Gigabit PHY SMII SMII SMII BCM5238 BCM5238 BCM5238 OCTAL-Φ OCTAL-Φ OCTAL-Φ Quad Magnetics Quad Magnetics Quad Magnetics Quad Magnetics Quad Magnetics Quad Magnetics