BCM5481 10/100/1000BASE-T GIGABIT COPPER TRANSCEIVER FEATURES SUMMARY OF BENEFITS Fully integrated 10BASE-T/100BASE-TX/1000BASE-T Gigabit Simplifies system and board design. Ethernet transceiver - Reduced I/O pin requirements with RGMII (over 50%). - On-chip RGMII timing delay GMII, RGMII, and MII MAC interface options Provides interoperability with IEEE standard devices On-chip low-voltage regulators operating at 10 Mbps, 100 Mbps, and 1000 Mbps at half- and full-duplex. Fully compliant with IEEE 802.3, 802.3u, and 802.3ab standards 0.13 CMOSlow power and cost Lowers system bill of materials (BOM) cost and simplifies system design. Low power - Less than 700 mW per port Requires no airflow or heatsink. - Advanced power management Eases system level debug. Trace matched output impedance Reduces system design constraints to meet EMI emissions Line-side loopback standards. Low electromagnetic interference (EMI) emissions Cable diagnostic function characterizes cable plant condition and immediately indicates cabling issues. Cable-plant diagnostics - Prevents erroneous equipment return due to bad cable - Cable plant analyzer function detects cable plant impairments - Link quality indication LED plants. - Automatic detection and correction of wiring pair swaps, pair - Prevents manufacturing fall-out due to bad cable plants. skew, and pair polarity - Automatic MDI/MDIX crossover at all speeds High CESD tolerance prevents equipment damage and return. Robust CESD tolerance Operates with larger packets for wider range of packet Support for jumbo packets up to 10 KB protocol support and improved efficiency. IEEE 1149.1 (JTAG) boundary scan Ease of manufacturing with JTAG support, simplified power supply, and multiple MAC interfaces. 64-pin MLP, 68-pin MLP, 100-pin FBGA, and 100-pin QFP packages BCM5481 BCM5645 24FE+2G MAC Switch BCM5481 BCM5481 BCM5248 BCM5248 BCM5248 Octal Octal Octal 10/100 Mbps PHY 10/100 Mbps PHY 10/100 Mbps PHY General Gigabit Ethernet Connectivity 1000BASE-T Gigabit Uplink Transformer RJ-45 Transformer Transformer RJ-45 RJ-45OVERVIEW TXD 7:0 TX EN SYMBOL TX ER TXDAC ENCODER 8 GTX CLK TXC BASELINE XTALK TRD 0:3 ECHO WANDER CANCELLER CANCELLER CORRECTION x3 DFE/ ADC FFE TRELLIS PGA CLK125 DECODER COL SYMBOL CRS DECODER/ RXC ALIGNER TIMING & RX DV AUTO- PHASE RX ER NEGOTIATION RECOVERY RXD 7:0 8 XTALI CLOCK ANEN (LED1) GENERATOR XTALO FDX (LED2) LED BIAS DRIVERS RDAC SPD0 (LED3) GENERATOR F1000(LED4) REGSUP 1:2 MII MII MDC REGSENSE 2 MGMT VOLTAGE REGISTERS MDIO CONTROL REGULATOR REGBIAS REG OUT 1:2 BCM5481 Reference Design The BCM5481 is optimized for low power and small footprint size to This device is another member of Broadcom s 0.13 Gigabit copper enable uplink and general Gigabit Ethernet connectivity applications. By PHY family, joining the BCM5461, BCM5461S, BCM5464, lowering system cost and reducing power dissipation, the BCM5481 BCM5464S, BCM5482, BCM5482S, BCM5488, and BCM5488S. The enables a new class of cost-effective Gigabit Ethernet equipment, 0.13 m process is the optimal process that offers the best performance, driving the delivery of Gigabit bandwidth to the desktop. lowest cost, and lowest power for Gigabit copper solutions. Further, devices based on the 0.13 process offer an excellent long-term cost The BCM5481 digital signal processor-based architecture and advanced curve, enabling better cost reduction over time, compared to older power management techniques combine to achieve robust and low technologies, without having to redesign or requalify a new part. power operation over the existing CAT-5 twisted-pair wiring. The BCM5481 architecture also meets the requirements of 802.3, 802.3u, The BCM5481 incorporates a number of advanced features. The link and 802.3ab, but maintains the industrys highest level of margin over quality indicator LED provides installers with immediate visual IEEE requirements for Echo, NEXT, and FEXT. Low power is a key notification of any problems with the wiring plant supporting operation factor in implementing Gigabit small form factor NICs and uplinks and, at the desired speed. This includes physical wiring defects that the at less than 700 mW per port, the BCM5481 has the industry s lowest BCM5481 cannot automatically correct and channel conditions such as power. Also, the BCM5481 has extremely low EMI emissions, which excessive cable length and return loss, crosstalk, echo, and noise. reduces the design constraints required to meet EMI emissions Broadcoms cable analyzer software can be used with the device to specifications. provide remote management of the cable and first-level diagnostics and fault isolation. In addition to supporting the IEEE 802.3 standard Gigabit Media Independent Interface (GMII), the BCM5481 also supports the reduced The BCM5481 also has ESD tolerance that exceeds typical industry gigabit media independent interface (RGMII). RGMII is a reduced pin- standards. This prevents ESD damage not only during manufacturing but count (12 versus 25) version of the GMII. The small package, multiple also during cable-sourced electrostatic discharge (CESD) events in the MAC interfaces, and streamlined power supply lowers system cost and field. CESD is an ESD event that occurs when an electrically charged simplifies the system and board level design. network cable is plugged into a network port, an issue becoming more prevalent with contemporary cable installations. Broadcom , the pulse logo, Connecting everything , and the Connecting everything logo 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 Phone: 949-926-5000 5300 California Avenue, Fax: 949-926-5203 Irvine, California 92617 E-mail: info broadcom.com Web: www.broadcom.com 2007 by BROADCOM CORPORATION. All rights reserved. 5481-PB00-R 04/03/07