marvell alaska 88e3082/88E3083 integrated 8-port 10/100base-t fast ethernet transceivers product overview the marvell ? alaska ? 88e3082 and 88E3083 are third-generation marvell dsp-based 8-port 10/100base-t fast ethernet (fe) transceivers. they offer the industrys lowest power consumption at only 150mw per port, resulting in higher port density, lower cost fe switches. additionally, the 88e3082 and 88E3083 integrate the industrys most advanced fe transceiver feature set, such as marvells virtual cable tester ? (vct?) technology for remote cable diagnostics and support for very low power modes. the alaska 88e3082 and 88E3083 contain all of the active circuitry to convert data streams to and from eight media access controllers (macs) and to and from the physical media. in addition, both devices incorporate ieee 802.3u auto-negotiation in support of both 100base-tx and 10base-t networks over twisted-pair cable in full-duplex or half-duplex mode. to reduce the number of input/output (i/o) pins between the mac and the physical layer (phy), the 88e3082 supports the reduced media independent interface (rmii), the serial media independent interface (smii), and the source-synchronous option of smii (sssmii). the sssmii interface extends the allowed pcb trace distance between the phy and the mac, thereby facilitating more robust, higher port density fe switch designs. the 88E3083 supports the smii and sssmii interfaces. the 88e3082 also features a mode of operation supporting ieee-compliant 100base-fx fber-optic networks. the device includes a pecl interface that is selectable on a per-port basis for 100base-fx applications. the 88E3083 supports 100base-fx fber on a single port. fig 1. 88e3082 (single-port) functional block diagram block diagram fig 2. 88e3082/88E3083 system diagram
marvell alaska 88e3082/88E3083 the marvell advantage: marvell products come with complete reference designs which include board layout designs, software, manufacturing diagnostic tools, documentation, and other items to assist customers with product evaluation and production. marvells worldwide feld application engineers collaborate closely with end customers to develop and deliver new leading-edge products for quick time-to-market. marvell utilizes world-leading semiconductor foundry and packaging services to reliably deliver high-volume and low-cost total solutions. about marvell: marvell is the leader in storage, communications and consumer silicon solutions. marvells diverse product portfolio includes switching, transceiver, communications controller, processors, wireless, power management and storage solutions that power the entire communications infrastructure, including enterprise, metro, home, storage, and digital entertainment solutions. for more information, visit our website at www.marvell.com . copyright ? 2007. marvell international ltd. all rights reserved. marvell, the marvell logo, moving forward faster, alaska, datacom systems on silicon, fastwriter, libertas, link street, netgx, phyadvantage, prestera, raising the technology bar, the technology within, virtual cable tester, and yukon are registered trademarks of marvell. marvell makes it all possible, ants, anyvoltage, discovery, dsp switcher, feroceon, galnet, galtis, horizon, radlan, unimac, and vct are trademarks of marvell. all other trademarks are the property of their respective owners. 88e3082/83-001 2/07 marvell semiconductor, inc. 5488 marvell lan e santa clara, ca 95054 phone 408.222.2500 www.marvell.com applications the marvell alaska 88e3082 and 88E3083 8-port transceivers are ideal for high-port density fe routers, hubs, and switches. the ultra-low power dissipation of only 150mw per port and the marvell vct advanced cable diagnostics enable the most cost-effective designs. features benefits ? eight independent ieee 802.3 compliant 100base-tx and 10base-t ports ? enable higher port density switch system design ? pecl interface supporting 100base-fx applications on a per port basis (88e3082 only; 88E3083 supports one fber port) ? supports fe over fber applications ? rmii, smii, and sssmii interfaces (rmii supported on 88e3082 only) ? provides user confgurable digital interfaces. sssmii option extends the distance between the phy and sw/mac chip on the pcb design ? lower power dissipation, 150mw/port ? yields higher port density and lower cost ? power management modes ? reduces system power ? virtual cable tester feature ? enables remote cable diagnostics for fault detection ? auto-mdi/mdix crossover for 100base-tx and 10base-t ports ? simplifes and reduces the cost of networking installation ? jumbo frame support to 10 kb with up to +/-150 ppm clock jitter ? supports applications that demand larger packet sizes ? ieee 802.3u auto-negotiation support for automatic speed and duplex selection ? enables a plug-and-play network system ? far-end-fault-indication (fefi) support for 100base-fx applications ? improves network reliability ? 100base-tx performance over 150 meters ? tolerates more cable mismatch and extends the receiving distance over 150 meters on standard cat 5 cable ? flexible serial and parallel led support ? eliminates cost of external led latches and drivers ? ieee 1149.1 standard test access port and boundary scan compatible ? allows for implementation of jtag function facilitating board-level debugging ? small outline packaging; 88e3082 in 224-pin tfbga, 88E3083 in 128-pin lqfp ? provides fexible package options for reduced pcb real estate fig 3. device feature comparison 88e3082 88E3083 package 224-pin tfbga 128-pin lqfp rmii yes no smii yes yes sssmii yes yes ddr-sssmii yes yes virtual cable tester yes yes fiber support all ports port 7 only parallel leds yes yes serial led mode yes no power management yes yes industrial grade yes no
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