Pico-communications E-14 Manuale Utente Scaricare il pdf (Pagina 16)

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

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CardBusInterface

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ThePicoE‐14canrunasastandaloneproductorbeconnectedtoahostusingtheCardBusconnector.

Bydefault,thePicoE‐14shipswithfirmwarethatisreadyforuseasaCardBusslavedevice,butitalso

supportsbusmastering.Thatsamefirmwarealsoprovidesthemeanstoswitchintostandlonemode.

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CardBusisa32‐bitinterfacewithamaximumspeedof33MHz.ThePicoE‐14hardwareisdesignedto

supportstandardPCMCIAaswellasDMAmode.TheCardBusstandardspecifiesthatallCardBushosts

bebackwardcompatiblewithPCMCIA.

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SinceCardBussystemscanonlybe3.3V,no

digitaltranslatingtransceiversarerequiredtoconnectwith

ahost.ThisallowsdirectconnectiontotheVirtex‐4FPGAforreducedpowerconsumption.Withthis

design,itiseasilypossibletoreversetheCardBusinterfaceandusethePicoE‐14asahostcontroller

forotherCardBusandPCMCIA

cards.

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ThosewhoareinterestedinalternateinterfacesshouldcontactPicoComputing.ThePCMCIAdecoder

sourcecodeandsupportisavailable.

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PCMCIAInterfaceResources:

CompactFlashAssociation www.compactflash.org

PCMCIAWebsite www.pcmcia.org

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For more information on standlone, reference the Standalone documentation located in the doc directory of where Pico

Utility is installed.

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Pico-communications E-14 Manuale Utente Pagina 16