Seagate ST3600002SS, ST3450802SS Electrical description, Pin descriptions, SAS pin descriptions

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9.4.4Electrical description

SAS drives use the device connector for:

•DC power

•SAS interface

•Activity LED

This connector is designed to either plug directly into a backpanel or accept cables.

9.4.5Pin descriptions

This section provides a pin-out of the SAS device and a description of the functions provided by the pins.

Table 21: SAS pin descriptions

Pin	Signal name	Signal type


S1	Port A Ground

S2*	+Port A_in	Diff. input pair

S3*	-Port A_in

S4	Port A Ground

S5*	-Port A_out	Diff output pair

S6*	+Port A_out

S7	Port A Ground

S8	Port B Ground

S9*	+Port B_in	Diff. input pair

S10*	-Port B_in

S11	Port A Ground

S12*	-Port B_out	Diff output pair

S13*	+Port B_out

S14	Port B Ground

*- Short pin to support hot plugging NC - No connection in the drive.

Pin	Signal name	Signal type


P1*	NC (reserved 3.3Volts)

P2*	NC (reserved 3.3Volts)

P3	NC (reserved 3.3Volts)

P4	Ground

P5	Ground

P6	Ground

P7	5 Volts charge

P8*	5 Volts

P9*	5 Volts

P10	Ground

P11*	Ready LED	Open collector out

P12	Ground

P13	12 Volts charge

P14*	12 Volts

P15*	12 Volts

Cheetah NS 10K.2 SAS Product Manual, Rev. C

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Contents ST3600002SS ST3450802SS Cheetah NS 10K.2 SASPage Contents Interface requirements Defect and error managementInstallation Seagate Technology support servicesScope Electromagnetic susceptibility Standards, compliance and reference documentsStandards Electromagnetic compatibilityCompliance Reference documents General description Reliability Standard featuresMedia description PerformanceFormatted capacities Factory-installed optionsProgrammable drive capacity Seek performance Performance characteristicsInternal drive characteristics Access timeGeneral performance characteristics Format command execution time minutesStart/stop time Cache operation Prefetch/multi-segmented cache controlCaching write data Prefetch operation Unrecoverable Errors Reliability specificationsError rates Recoverable ErrorsHot plugging the drive Reliability and serviceInterface errors Preventive maintenanceReporting control 4 S.M.A.R.TControlling S.M.A.R.T Performance impactDrive Self Test DST Temperature Log Page 0Dh Parameter Code DescriptionPredictive failures Thermal monitorImplementation DST failure definitionShort test Function Code 001b Product warrantyExtended test Function Code 010b Shipping ST3600002SS DC power requirements Physical/electrical specificationsAC power requirements DC power requirementsGeneral DC power requirement notes ST3450802SS DC power requirementsConducted noise immunity Power sequencingCurrent profiles Typical ST3600002SS drive +5V and +12V current profiles ST3600002SS Power dissipationST3450802SS Environmental limits Temperature a. OperatingShock Relative humidityEffective altitude sea level a. Operating Shock and vibrationRecommended mounting Package size Packaged/product weight Drop heightCorrosive environment Air cleanlinessVibration a. Operating-normal AcousticsChina Restriction of Hazardous Substances RoHS Directive Physical dimensions Mechanical specificationsDrive internal defects/errors Defect and error managementDrive error recovery procedures 77.81 Deferred Auto-Reallocation SAS system errorsBackground Media Scan Media Pre-ScanIdle Read After Write Drive orientation InstallationAir flow CoolingGrounding Drive mountingInterface requirements SAS featuresDual port support Commands supported by Cheetah NS 10K.2 SAS family drives Scsi commands supportedCommands supported by Cheetah NS 10K.2 SAS family drives Commands supported by Cheetah NS 10K.2 SAS family drives Commands supported by Cheetah NS 10K.2 SAS family drives 2Mode Sense data Inquiry dataBytes Data hex Page Mode Pages 2.1 ST3600002SS Mode Sense data2.2 ST3450802SS Mode Sense data Miscellaneous status Miscellaneous operating features and conditionsMiscellaneous features Supported Feature or condition SAS physical interface Datum B Connector requirements Physical characteristicsSAS pin descriptions Pin Signal name Signal typeElectrical description Pin descriptionsReady LED Out Signal characteristicsPower SAS transmitters and receiversEye masks Eye masks overview LED drive signalDifferential signals General interface characteristicsReceive eye mask X2OP 0, 5xadditional sinusoidal jitter X1OP Signal characteristica Units 5Gb/s 0Gb/s Transmitter signal characteristics5Gb/s m, n 0Gb/s m, n Deterministic jitterq Receiver signal characteristicsSignal characteristic Units 5Gb/s 0Gb/s Maximum allowable jitterJitterh Receiver jitter toleranceImpedance requirements Sheet 1 5Gb/sa 0Gb/sa Sinusoidal Deterministic TotalElectrical TxRx connections Impedance requirements Sheet 2= -5, 437dB Shows the zero-length test load Receiver characteristics SAS-2 Specification complianceAdditional information Presales Support Seagate Technology support servicesTechnical Support Data Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Index Page SAS See also cooling Page Seagate Technology LLC

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