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Pico Communications E-14 Computer Hardware User Manual

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E‐14HardwareReferenceManual www.picocomputing.com PicoComputing,Inc.

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10

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Tri‐ModeEthernetInterface

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ThePicoE‐14featurestheMarvellAlaskaseries88E1111tri‐modeEthernettransceiver.OnEPseries

partstheMAC(Middleaccesscontroller)isimplementedontheFPGAdie.OnLOseriespartstheMAC

mustbeimplementedinfirmware.CommunicationbetweentheMACandPHYtakesplaceoveran

industry

standardMII/GMIIinterface.

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TheEthernettransceiverfeatures10/100/1000full/halfduplexoperation.Itwillautomatically

configurethephysicalinterfaceontheflyforcrossoverorstraightthroughoperation.ThePHYcan

evenautomaticallycorrectforcommonwiringmistakes.ThePHYhasabuiltinTimeDomain

Reflectometerthatcandiagnosecable

problemsandpinpointtheirdistanceawayfromthe

transceiver.

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IncontrasttothePicoE‐12,theEthernetinterfaceonthePicoE‐14ismagneticallyisolatedallowing

directconnectionstoanindustrystandardhuborswitch.

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TheMarvell88E1111istheonlychiponthePicoE‐14thatrequiresanNDAforaccesstothe

datasheets.Ifyouareinterestedinsomeoftheadvancedfeaturesnotsupportedbythenativedriver,

contactPicoComputingforassistanceinobtaininganNDAfromMarvell.Usersarewarnednotto

contactMarvelldirectly.

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EthernetResources:

Marvell88E1111Webpage http://www.marvell.com/products/transceivers/singleport/88e1111.jsp

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