BCM54880B0IFBG

BCM54880 ® OCTAL 10/100/1000BASE-T GIGABIT ETHERNET BROADR-REACH™ TRANSCEIVER FEATURES SUMMARY OF BENEFITS • Eight 10BASE-T/100BASE-TX/1000BASE-T Gigabit Ethernet (GbE) and BroadR-Reach™ transceivers in a single fully integrated 65 nm CMOS chip • Full-duplex operation at the rate of 100 Mbps and 10 Mbps over one, two, and four pairs of unshielded twisted pair cable up to 1000m, depending on cable quality • Full-duplex and 10 Mbps and 100 Mbps operation over pointto-point coax cable • Low-cost, and low-power 8-port integration enables singlerow, high-port density switches. • Enables new IP services that require extended reach over one, two, or four pairs of either CAT5 or telephony grade cables • Each port individually configurable as BroadR-Reach 10/100 or standard Ethernet 10/100/1000 • Low-cost solution for service providers access switches and enterprise/SMB managed and unmanaged switch applications • SGMII and SerDes MAC interface options • Internal 100Ω twisted-pair termination resistors • Lowers system BOM cost and simplifies system design • Supports 10/100/1000BASE-T and 100BASE-FX on copper • Internal 100Ω twisted-pair termination resistors eliminate need for external resistors, saving eight resistors per port. interface • Provides compatibility with IEEE 802.3 standard devices • Enhanced LED driver modes operating at 10 Mbps, 100 Mbps, and 1000 Mbps at halfduplex and full-duplex • Fully compliant with IEEE 802.3™, IEEE 802.3u, and IEEE 802.3ab standards • Eases system-level debug • Line-side loopback • Enables use of low-cost magnetics, even in high-density (48+) • Low EMI emissions designs • Hardware-accelerated CableChecker™ diagnostics • CableChecker characterizes cable plant condition and • Robust cable-sourced electrostatic discharge (CESD) immediately indicates cabling issues. • Operates with larger packets for wider range of packet- tolerance protocol support and improved efficiency • Support for jumbo packets • IEEE 1149.1 (JTAG) and 1149.6 (AC-JTAG) boundary scan BCM54880 10/100/1000BASE-T Gigabit Ethernet Transceiver 2x8 RJ-45s BCM54880 with integrated magnetics 10/100/1000 Mbps Ethernet Switch BCM54880 System Diagram OVERVIEW BCM54880 TX DAC TRD [3:0] {8}± TRD [3:0] {7}± TRD [3:0] {6}± TRD [3:0] {5}± XTALK Canceller Baseline Wander Correction SGMII Interface SGIN {8:1}± SGOUT {8:1}± TRD [3:0] {4}± Echo Canceller TRD [3:0] {3}± TRD [3:0] {2}± TRD [3:0] {1}± DFE/ Trellis Decoder FFE PGA ADC Timing & Phase Recovery LED Interface LED[4:1] {8:1}/ SLED[32:1] SLED_CLK SLED_STRB SLED_IN AutoNegotiation MII MGMT Control MII Registers RDAC [2:1] MDIO [2:1] MDC [2:1] Modes Bias Generator Clock Generator REFCLK2+ REFCLK1+ BCM54880 Block Diagram The BCM54880 is a member of the Broadcom® GbE BroadR-Reach family of copper PHY products. It includes eight complete 10/100/1000 BASE-T and BroadR-Reach transceivers integrated on a single 65 nm CMOS chip. The BCM54880 includes eight SGMII serial media access controller interfaces and eight copper ports, whereby each copper port supports one, two, or four twisted-pair line connections. BroadR-Reach technology supports both 100-meter traditional Ethernet services and other applications that require longer than 100-meter reach or operation over a single twisted wire pair (such as FTTC/FTTB in MTU/ MDU as well as hotels). The extended reach also broadens the range of cable installations and can be used for new IP services and applications such as broadband access, voice over IP (VoIP), wireless access points, and surveillance cameras. Building on technologies that extend the range of Ethernet over twisted pair, Broadcom technology enables every BroadR-Reach port to also support IEEE 802.3-compliant technologies such as 10BASE-T, 100BASE-TX, and 1000BASE-T. As a result, BroadR-Reach guarantees interoperability and connectivity to standard 10/100/1000BASE-T devices over distances up to 100 meters while extending 10/100 operations over one, two, or four pairs of UTP cable for a distance of more than 1000m, depending on the quality of the cable and number of pairs used. Additionally, BroadR-Reach technology works in Power over Ethernet (PoE)-enabled platforms, providing a new generation of IP services and applications such as security camera surveillance. BroadR-Reach technology addresses key issues that affect deployment of IP services in today’s enterprise. For example, since many traditional digital PBX phone systems use twisted-pair cables that do not support standard IEEE 802.3 Ethernet PHY technology, BroadR-Reach is a good solution for migrating to IP-based telephony systems by leveraging the current infrastructure. Also, in new installations, some devices such as wireless access points (WAPs) and surveillance cameras may not be conveniently located within the standard 100-meter range of horizontal wiring in structured cabling systems. For these applications, BroadRReach provides IT managers with additional flexibility in connecting devices over distances that would otherwise require fiber-optic cabling and expensive optical transceivers. When in BroadR-Reach mode of operation, the BCM54880 can operate full-duplex at the rate of 10 Mbps and 100 Mbps over four-pair CAT5 twisted-pair wiring. The BCM54880 also features advanced hardware-accelerated cablechecker diagnostic software that detects cable length or cable plant impairments. The information obtained from the diagnostic software can be used in conjunction by the OEM software and has the intelligence to automatically put the BCM54880 in either BroadR-Reach mode or normal Ethernet mode of operation. The BCM54880 architecture not only meets the requirements of IEEE 802.3, IEEE 802.3u, and IEEE 802.3ab, but also maintains the industry’s highest level of margin over IEEE requirements for echo, near-end crosstalk (NEXT), and far-end crosstalk (FEXT). Since BroadR-Reach ports also support standard 10/100/1000BASE-T configurations, system vendors can easily offer upgraded products with no compromise to the features, performance, and interoperability of their existing switch technology. Broadcom®, the pulse logo, Connecting everything®, the Connecting everything logo, CableChecker™, and BroadR-Reach™ are among the trademarks of Broadcom Corporation and/or its affiliates in the United States, certain other countries and/or the EU. Any other trademarks or trade names mentioned are the property of their respective owners. ® BROADCOM CORPORATION 5300 California Avenue Irvine, California 92617 © 2009 by BROADCOM CORPORATION. All rights reserved. 54880-PB01-R 09/28/09 Phone: 949-926-5000 Fax: 949-926-5203 E-mail: info@broadcom.com Web: www.broadcom.com