BCM5482S Brief DUAL-PORT 10/100/1000BASE-T GIGABIT ETHERNET TRANSCEIVER FEATURES SUMMARY OF BENEFITS Dual-port integrated 10BASE-T/100BASE-TX/1000BASE-T Compact solution for high density uplink applications, enabling Gigabit Ethernet transceiver 10/100/1000BASE-T and 1000BASE-X/100BASE-FX uplinks RGMII, SGMII, and SerDes MAC interface options 1000BASE-X and 100BASE-FX support from same line side pins enables direct interface to SFP modules SGMII to SGMII support for SFP modules Provides compatibility with IEEE standard devices operating at Fully compliant with IEEE 802.3, IEEE 802.3u, IEEE 802.3ab 10, 100, and 1000 Mbps at half-duplex and full-duplex. standard, and IEEE 802.3z Clock timing can be adjusted to eliminate board trace delays 0.13-micron CMOSlow power and cost required by the RGMII specification. Supports copper or fiber in RGMII mode Lowers system BOM cost and simplifies system design Low power Eases system level debugging 725 mW per port Advanced power management Enables use of low-cost magnetics Trace-matched output impedance Cable diagnostic function characterizes cable plant condition and immediately indicates cabling issues. Line-side and MAC-side loopback Prevents erroneous equipment return due to bad cable plants Prevents manufacturing fallout due to bad cable plants Low EMI emissions Allows immediate uptime at reduced speeds (100BASE-TX or 10BASE-T) CableChecker diagnostics Cable plant analyzer function detects cable plant impairments Over 3 kV of CESD tolerance prevents equipment damage and Ethernet WireSpeed return. Automatic MDI/MDIX crossover at all speeds Operates with larger packets for wider range of packet protocol Robust cable-sourced electrostatic discharge (CESD) tolerance support and improved efficiency Support for jumbo packets up to 10 kB Ease of manufacturing with JTAG support, simplified power supply, and multiple MAC interfaces IEEE 1149.1 (JTAG) boundary scan 121-pin BGA package BCM5482S System Diagram SFP Module 1000Base-X or100Base-FX Optical Module Strata or XGS Switch BCM5482S SFP Connector Transformer RJ-45OVERVIEW BCM5482S TXD 2:1 3:0 TX DAC Symbol Encoder TX EN 2:1 GTX CLK 2:1 SGIN P1 SGOUT P1 XTALK SGCLK P1 Baseline Echo Canceller SGIN P2 Wander TRD2 3:0 Canceller x3 SGOUT P2 Correction SGMII/SerDes TRD1 3:0 SGCLK P2 S SGIN P1 S SGOUT P1 S SGIN P2 S SGOUT P2 FFE PGA ADC RXC 2:1 Symbol Decoder/ RX DV 2:1 DFE & Aligner RXD1 3:0 Trellis Decoder RXD2 3:0 Timing & Phase Timing & Phase LED P1 1 /ANEN (LED1) Recovery Recovery LED P1 2 /INTR/FDX/SD (LED2) Auto- LED P1 3 (LED3) Negotiation LED Drivers LED P1 4 (LED4) LED P2 1 /SPD0 (LED1) LED P2 2 /INTR/F1000/SD (LED2) LED P2 3 (LED3) XTALI Clock LED P2 4 (LED4) XTALO Generator MDC P1 MDIO P1 Bias MII Management RDAC Generator Control MDC P2 MII Registers MDIO P2 REG SUP 2:1 Voltage REG OUT 2:1 Regulator DRVSEL 1:0 INTFSEL 1:0 BCM5482S Block Diagram A member of Broadcoms third generation of Gigabit Ethernet PHYs, the In most switch designs, a few ports are targeted as uplink ports to connect to BCM5482S consists of two complete 10/100/1000BASE-T Gigabit servers, switches, or remote links. These connections can be 10/100/ Ethernet transceivers integrated on a single monolithic CMOS chip. The 1000BASE-T, 1000BASE-SX/LX, or 100BASE-FX. In order to BCM5482S is optimized for low power and small footprint size to reduce accommodate these various interfaces, one or more SFP slots can be design complexity for high-density uplink applications. For high-density designed into the switch and the user can plug an SFP module into the slot uplink applications, the single package offers a compelling advantage over that meets their specific requirement. two single devices for Gigabit uplinks. The BCM5482S addresses the specific problem of supporting multispeed The BCM5482S DSP-based architecture and advanced power management SFP uplinks. 1000BASE-X SFP modules require a SerDes interface to the techniques combine to achieve robust and low-power operation over SFP module. 10/100/1000BASE-T and 100BASE-FX require an SGMII existing Category 5 twisted-pair wiring. The BCM5482S architecture not interface in order to rate adapt to the lower speeds (less than 1 gigabit). The only meets the requirements of IEEE 802.3, IEEE 802.3u, and IEEE BCM5482S can switch between any of these interfaces, depending on the 802.3ab, but also maintains the industrys highest level of margin over IEEE SFP module installed. requirements for echo, near-end crosstalk (NEXT), and far-end crosstalk Each BCM5482S port is fully independent and has individual interface, (FEXT). With the industry s lowest power at 725 mW per port, the control, and status registers, and incorporates a number of advanced BCM5482S assists in reducing the power distribution requirements of IP features. This includes identifying physical wiring defects that the phone systems. In addition, the BCM5482S has extremely low EMI BCM5482S cannot automatically correct and channel conditions such as emissions, which reduces the design constraints required to meet EMI excessive cable length and return loss, crosstalk, echo, and noise. radiation specifications. Broadcoms cable analyzer software can be used with the device to provide The BCM5482S supports the RGMII, SGMII, and SerDes MAC interfaces. remote management of the cable and a first level of diagnostics and fault The RGMII, SGMII, and serial SerDes interfaces are reduced-pin-count (12, isolation. 6, and 4, respectively, versus 25) versions of the GMII. The RGMII clock The BCM5482S also has ESD tolerance that is well above typical industry timing can be adjusted to eliminate the board trace delays required by the standards. This prevents ESD damage not only during manufacturing, but RGMII specification. These reduced-pin-count interfaces simplify design also during CESD events in the field. The CESD is an ESD event that occurs and lower system cost by reducing the number of layers required for signal when an electrically charged network cable is plugged into a network port. routing. In addition, these interfaces allow fewer pins at the MAC/switch, This issue is becoming more prevalent with contemporary cable which reduces the MAC/switch cost by enabling smaller die sizes than installations. The BCM5482S can tolerate over 3 kV of CESD. would be possible with full GMII. Broadcom , the pulse logo, QuadSquad, 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 Phone: 949-926-5000 5300 California Avenue, P.O. Box 57013 Fax: 949-926-5203 Irvine, California 92617 E-mail: info broadcom.com Web: www.broadcom.com 2007 by BROADCOM CORPORATION. All rights reserved. 5482S-PB00-R 05/02/07