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| BCM5228 PRODUCT (R) Brief OF BENEFITS 1 0 / 1 0 0 B A S E - T X / F X O C TA L - TM T R A N S C E I V E R BCM5228 FEATURES SUMMARY * 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-TM architecture * Target usage: Fast Ethernet switches * Smallest footprint per port available * HP Auto-MDIX detects and corrects cabling errors * Measures 17 mm x 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 paired with an external fiber-optic transceiver * Permits transmission over fiber-optic cabling when * 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 STRATASWITCHTM 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 2x6 RJ45 Stacked 2x6 BCM5228 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, autonegotiation 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 2.5-V 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(R), the pulse logo, Octal-, Digi- , StrataSwitchTM and Connecting everything(R) are trademarks of Broadcom Corporation and/or its subsidiaries in the United States and certain other countries. All other trademarks are the property of their respective owners. (R) BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013 (c) 2003 by BROADCOM CORPORATION. All rights reserved. 5228-PB05-R 04-15-03 Phone: 949-450-8700 FAX: 949-450-8710 Email: info@broadcom.com Web: www.broadcom.com |
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