Seagate ST3500071FC, ST3400071FC manual FC-AL transmitters and receivers, Power, Fault LED Out

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9.5.5FC-AL transmitters and receivers

A typical FC-AL differential copper transmitter and receiver pair is shown in Figure 11. The receiver is required to provide the AC coupling to eliminate ground shift noise.

		68		.01
	TX		Differential		RX
	Transmitter	150	Differential	150	Receiver
	Transmitter	150	Transfer Medium	150	Receiver
	TY		Transfer Medium		RY
	TY	68			RY
		68		.01
	150			.01
	150

Figure 11. FC-AL transmitters and receivers

9.5.6Power

Power is supplied through the FC-SCA with support for +5 volts and +12 volts. All of the voltage pins in the drive connector are the same length.

Four 12 volt pins provide +12 volt power to the drive. The current return for the +12 volt power supply is through the common ground pins. The supply current and return current must be distributed as evenly as pos- sible among the pins. The maximum current typically occurs while the drive motor is starting.

Three 5 volt pins provide logic power to the drive. The current return for the +5 volt power supply is through the common ground pins. Distribute supply and return current as evenly as possible among the voltage and ground pins.

The mating connector pins use shorter contacts to achieve power surge reductions and to aid in “hot plugging” the drives. There are longer voltage contacts in the connector to enable the drive filter capacitors to charge. Current to the drive through the long charge pins is limited by the system in which the drive operates. Three of the +12 volt pins are shorter to allow capacitive pre-charging through the longer +12 volt charge pin. Two of the +5 volt pins are shorter to allow capacitive precharging through the longer +5 volt charge pin.

9.5.7Fault LED Out

The Fault LED Out signal is driven by the drive when:

•the drive detects failure of both ports

•the drive detects an internal failure

•the drive receives the appropriate fault LED command from the host

The Fault LED Out signal is designed to pull down the cathode of an LED. The anode is attached to the proper +5 volt supply through an appropriate current-limiting resistor. The LED and the current-limiting resistor are external to the drive.

NL35 Series FC Product Manual, Rev. D

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Contents ST3500071FC ST3400071FC NL35 Series FCPage Contents Interface requirements Defect and error managementInstallation Seagate Technology support services NL35 Series FC Product Manual, Rev. D NL35 Series family disc drive List of FiguresViii NL35 Series FC Product Manual, Rev. D NL35 Series family disc drive ScopeNL35 Series FC Product Manual, Rev. D Electromagnetic susceptibility Applicable standards and reference documentationStandards Electromagnetic compatibilityEnvironmental protection Electromagnetic complianceFibre Channel Interface Manual Reference documentsNL35 Series FC Product Manual, Rev. D General description Standard features Formatted capacities Media descriptionPerformance ReliabilityProgrammable drive capacity Factory-installed accessoriesFactory-installed options User-installed accessoriesAccess time Performance characteristicsInternal drive characteristics Seek performance characteristicsGHz Generalized performance characteristicsCache operation Start/stop timePrefetch/multi-segmented cache control Prefetch operation Caching write dataPage NL35 Series FC Product Manual, Rev. D Error rates Reliability specificationsSeek errors Reliability and serviceRecoverable Errors Unrecoverable errorsHot plugging the drive Preventive maintenanceMean Time Between Failure Mtbf Milliseconds 4 S.M.A.R.TControlling S.M.A.R.T Performance impactParameter Code Description Temperature Log page 0DhPredictive failures Thermal monitorImplementation State of the drive prior to testingDrive Self Test DST DST Failure DefinitionExtended test Function Code 010b Invoking DSTShort and extended tests Short test Function Code 001bProduct repair and return information Product warrantyAbort ShippingST3500071FC/ST3400071FC DC power requirements Physical/electrical specificationsAC power requirements DC power requirementsConducted noise immunity General DC power requirement notesPower sequencing Power dissipation Effective altitude sea level TemperatureEnvironmental limits Relative humidityShock Package size Packaged/product weight Drop heightShock and vibration Recommended mounting Vibration Air cleanlinessAcoustics Typical idle mode sound power ST3500071FC and ST3400071FCCorrosive environment Mounting configuration dimensions Mechanical specificationsNL35 Series FC Product Manual, Rev. D Drive error recovery procedures Defect and error managementDrive internal defects/errors 108.3 Media Pre-Scan FC-AL system errorsBackground Media Scan NL35 Series FC Product Manual, Rev. D Drive orientation InstallationDrive ID/option selection Air flow CoolingGrounding Drive mountingNL35 Series FC Product Manual, Rev. D Type of frame Link service FC-AL featuresFibre Channel link service frames Link services supportedFC Scsi FCP response codes Fibre Channel task management functionsFibre Channel Scsi FCP task management functions Fibre Channel task management responsesBytes Fibre Channel port loginNPort login Plogi payload Process Login Plri payload Fibre Channel port login acceptNPort Login Accept ACC payload Fibre Channel Process LoginFabric Login Flogi payload Fibre Channel Process Login AcceptProcess Login Accept ACC payload Fibre Channel fabric loginFabric Login Accept ACC payload Fibre Channel fabric accept loginOption Supported Dual port supportFibre Channel Arbitrated Loop options FC-AL options supportedCommand code Supported Command name Scsi commands supportedSupported commands Supported commands Supported commands Supported commands Supported commands Bytes Data hex Mode Sense dataInquiry data NL35 Series inquiry dataPage DEF CHG NL35 Series FC Product Manual, Rev. D Miscellaneous status Miscellaneous operating features and conditionsMiscellaneous features Supported Feature or conditionPhysical description Physical characteristicsFC-AL physical interface Electrical description Connector requirementsPart description Positions Part number Features FC-SCA pin descriptions Pin Signal name Signal typePin descriptions FC-AL transmitters and receivers PowerFault LED Out Active LED Out conditions Enable port bypass signalsNormal command activity LED status Active LED Out11 SEL6 through SEL0 ID lines Motor start control signalsParallel Enclosure Services Interface ESI Motor start controlsHex Dec SettingArbitrated loop physical address Alpa values Signal characteristics Differential Pecl input characteristics LED driver signalsLED drive signal Differential Pecl output characteristicsLink rate GHz Eye diagram data valuesNL35 Series FC Product Manual, Rev. D Technical Support Seagate Technology support servicesInternet Presales SupportData Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Numerics IndexFAN Flogi Plogi Page See also cooling