BCM5421

BCM5228 ® 10/100BASE-TX/FX HEX-Φ™ TRANSCEIVER FEATURES • • • • • • • • • • • • • 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 DSP Digi-Φ™ architecture SUMMARY OF BENEFITS • • • • • 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 100BASETX full- or half-duplex Ethernet on Category 5 unshielded twisted-pair (UTP) cable and 10BASE-T full-duplex or halfduplex 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 for each port 24-Port 10/100 Switch BCM5421 Gigabit PHY STRATASWITCH™ GMII GMII EPIC RMII EPIC RMII EPIC RMII BCM5421 Gigabit PHY BCM5228 OCTAL-F BCM5228 OCTAL-F BCM5228 OCTAL-F Quad Magnetics Quad Magnetics Quad Magnetics Quad Magnetics Quad Magnetics Quad Magnetics RJ45 Stacked 2×6 RJ45 Stacked 2×6 OVERVIEW TXD [3:0] 4 TD+/Multimode Xmt DAC 10BASE-T PCS TXEN TXER TXC 12 TXD [1:0] TXEN Auto MDIX Baseline Wander Correction MII to RMII or SMII REF_CLK COL RXC 100BASE-X PCS Digital Adaptive Equalizer CRS RXDV RXER RXD[3:0] 2 4 CRS_DV RX_ER RXD[1:0] RD+/- ADC SD+/- 2 CRS/Link Detection AutoNegotiation/ Link Integrity RFF_CLK Clock Generator Clock Recovery DTE Power Detection BIAS Bias Generator MDC JTAG 5 JTAG TAP+BS MII Registrers MII Mgmt Control MDIO The Broadcom BCM5228 is a single-chip device containing eight independent Fast Ethernet transceivers. Each performs all the physical layer functions for 100BASE-TX full-duplex or half-duplex Ethernet on Category 5 UTP cable and 10BASE-T full-duplex or half-duplex Ethernet on Category 3, 4, or 5 UTP cable. The BCM5228 chip performs encoding and decoding, clock and data recovery, digital adaptive equalization, line transmission, carrier sense and link integrity monitoring, auto-negotiation and RMII/SMII management functions. The BCM5228 complies with the IEEE 802.3 standard. The BCM5228 can be connected to a switch controller through the RMII/SMII on one side and to the network media on the other side through isolation transformers for UTP modes or fiber-optic transceiver/ receiver components for FX mode. The BCM5228 operates from a 2.5V power supply; the I/O operates at either 2.5V or 3.3V. The BCM5228 includes support for HP Auto-MDIX, which enables the transceiver to automatically detect and correct miswired cable. With the HP Auto-MDIX feature, all ports on a switch can be connected to any other 10/100 port on any switch, hub, or network interface card, using crossover or straight-through cables interchangeably. This makes installation, debugging, and maintenance of the network simpler and less expensive to the end user. The BCM5227 is a version that does not support HP Auto-MDIX. The BCM5227 and BCM5228 are offered in three package options. The BCM5227U and BCM5228U are packaged in a 208-pin PQFP and support 10/100 operation over UTP, with three LED indicators per port. The BCM5227F and BCM5228F are packaged in a 208-pin PQFP and support either 10/100 UTP transmission or 100BASE-FX via external fiber-optic transceivers, along with one LED indicator per port. The BCM5227B and BCM5228B are packaged in 256-pin FBGA and support either UTP or fiber on each port, as well as three LED indicators per port. All of these products support both RMII and SMII. Broadcom®, the pulse logo, and Connecting everything® are trademarks of Broadcom Corporation and/ or its subsidiaries in the United States and certain other countries. All other trademarks mentioned are the property of their respective owners. ® BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013 © 2004 by BROADCOM CORPORATION. All rights reserved. 5228-PB06-R 04/08/04 Phone: 949-450-8700 Fax: 949-450-8710 E-mail: info@broadcom.com Web: www.broadcom.com