Seagate ST336807FC 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 15. The receiver is required to provide the AC coupling to eliminate ground shift noise.

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

Figure 15. 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.

Cheetah 10K.7 36GB FC Product Manual, Rev. A

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Contents Cheetah 10K.7 FC Page Cheetah 10K.7 FC Page Revision status summary sheet Rev. a 05/04/05 All. Initial releaseRevision Date Sheets Affected Page Contents Interface requirements Physical/electrical specificationsDefect and error management InstallationSeagate Technology support services Viii Cheetah 10K.7 36GB FC Product Manual, Rev. a Cheetah 10K.7 FC family disc drive List of FiguresCheetah 10K.7 36GB FC Product Manual, Rev. a Cheetah 10K.7 FC family disc drive ScopeCheetah 10K.7 36GB FC Product Manual, Rev. a Electromagnetic susceptibility Applicable standards and reference documentationStandards Electromagnetic compatibilityEuropean Union Restriction of Hazardous Substances RoHS Electromagnetic complianceFibre Channel Interface Manual Reference documentsCheetah 10K.7 36GB FC Product Manual, Rev. a General description Media description Standard featuresProgrammable drive capacity PerformanceReliability Formatted capacitiesFactory-installed accessories Factory-installed optionsUser-installed accessories Performance characteristics Internal drive characteristicsST336807FC Generalized performance characteristics Seek performance characteristicsAccess time Format command execution time in minutesStart/stop time Prefetch/multi-segmented cache controlCache operation Caching write data Prefetch operation Cheetah 10K.7 36GB FC Product Manual, Rev. a Reliability specifications Error ratesRecoverable Errors Reliability and service Hot plugging the drive 4 S.M.A.R.TControlling S.M.A.R.T Determining rate Performance impactMilliseconds Reporting controlTemperature Log page 0Dh Parameter Code DescriptionDrive Self Test DST Invoking DST State of the drive prior to testingDST Failure Definition ImplementationLog page entries Product warrantyShort test Function Code 001b Extended test Function Code 010bProduct repair and return information ShippingST336807FC DC power requirements Physical/electrical specificationsAC power requirements DC power requirementsGeneral DC power requirement notes Power sequencingConducted noise immunity Typical ST336807FC drive, 2 Gbit, +5V current profile Typical ST336807FC drive, 2 Gbit, +12V current profileST336807FC Power dissipationEffective altitude sea level TemperatureEnvironmental limits Relative humidityPackage size Packaged/product weight Drop height Shock and vibrationShock Recommended mounting Air cleanliness VibrationCorrosive environment Acoustics Mechanical specificationsMounting configuration dimensions Defect and error management Drive internal defects/errorsDrive error recovery procedures 77.7 FC-AL system errors Background Media ScanMedia Pre-Scan Cheetah 10K.7 36GB FC Product Manual, Rev. a Drive ID/option selection InstallationPhysical interface Drive Front LED connections1 J6 connector requirements Drive orientationCooling Grounding Drive mountingType 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 responsesFibre Channel port login NPort login Plogi payloadBytes 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 supportedScsi commands supported Supported commandsCommand code Supported Command name Supported commands Supported commands Supported commands Supported commands Bytes Data hex Mode Sense dataInquiry data Cheetah 10K.7 FC inquiry dataPage DEF CHG Miscellaneous status Miscellaneous operating features and conditionsMiscellaneous features Supported Feature or conditionPhysical characteristics FC-AL physical interfacePhysical description Part description Positions Part number Features Connector requirementsElectrical description J6 connector dimensionsPin Signal name Signal type Pin descriptionsFC-SCA pin descriptions Power Fault LED OutFC-AL transmitters and receivers 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 controlsSetting Arbitrated loop physical address Alpa valuesHex Dec Signal characteristics Differential Pecl input characteristics LED driver signalsLED drive signal Differential Pecl output characteristicsLink rate GHz Eye diagram data valuesCheetah 10K.7 36GB FC Product Manual, Rev. a Technical Support Seagate Technology support servicesInternet MySeagate Reseller.seagate.com Presales SupportWarranty Service Data Recovery Services Authorized Service CentersData Recovery Services FAX services-All Europe toll call Call center Presales and Technical Support Warranty ServiceToll-free support numbers Asia/Pacific support services Publication feedback survey Cheetah 10K.7 36GB FC Product Manual, Rev. a Numerics IndexFAN Flogi PBC Page See also cooling