Seagate ST936751SS, ST973451SS manual Receiver characteristics

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9.5.2.5Receiver characteristics

The drive receiver is A.C. coupled. The receive network terminates the TxRx connection by a 100 ohm equiva- lent impedance as specified in table 21.

The receiver operates within a BER of 10-12when a SAS signal with valid voltage and timing characteristics is delivered to the compliance point from a 100 ohm source. The received SAS signal are considered valid if it meets the voltage and timing limits specified in table 18.

Additionally the receiver operates within the BER objective when the signal at a receiving phy has the addi- tional sinusoidal jitter present that is specified in table 20 and the common mode signal VCM over frequency range FCM as specified in table 16. The jitter tolerance is shown in Figure 18 for all Rx compliance points in a TxRx connection. The figure given assumes that any external interference occurs prior to the point at which the test is applied. When testing the jitter tolerance capability of a receiver, the additional 0.1 UI of sinusoidal jitter may be reduced by an amount proportional to the actual externally induced interference between the applica- tion point of the test and the input to the receiving phy. The additional jitter reduces the eye opening in both voltage and time.

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Contents 100407739 Rev. B Savvio 15K SASPage Revision status summary sheet Savvio 15K SAS Product Manual, Rev. B Contents Installation Defect and error managementSeagate Technology support services Interface requirementsList of Figures Page Scope Savvio 15K SAS Product Manual, Rev. B Standards Applicable standards and reference documentationElectromagnetic compatibility Electromagnetic susceptibilityElectromagnetic compliance for the European Union Electromagnetic complianceAustralian C-Tick Korean MICEuropean Union Restriction of Hazardous Substances RoHS Reference documentsSavvio 15K SAS Product Manual, Rev. B General description Performance Standard featuresMedia description Reliability Factory-installed accessoriesFormatted capacities Programmable drive capacityOptions Internal drive characteristics Performance characteristicsSeek performance characteristics Access time Gen 2.0 LP dataGeneral performance characteristics Format command execution timeCache operation Start/stop timePrefetch/multi-segmented cache control Prefetch operation Caching write dataError rates Reliability specificationsRecoverable Errors Unrecoverable ErrorsSeek errors Reliability and serviceInterface errors Preventive maintenanceControlling S.M.A.R.T 4 S.M.A.R.TPerformance impact Reporting controlPredictive failures Temperature Log Page 0DhThermal monitor Parameter Code DescriptionDST failure definition State of the drive prior to testingImplementation Invoking DSTShort test Function Code 001b Product warrantyExtended test Function Code 010b Log page entriesProduct repair and return information ShippingSavvio 15K SAS Product Manual, Rev. B AC power requirements Physical/electrical specificationsDC power requirements ST973451SS DC power requirementsGeneral DC power requirement notes ST936751SS DC power requirementsCurrent profiles Power sequencingConducted noise immunity Typical ST936751SS current profile ST973451SS in 1.5 Gbit operation Power dissipationST973451SS in 3 Gbit operation ST936751SS in 1.5 Gbit operation ST936751SS in 3 Gbit operationRelative humidity TemperatureEnvironmental limits Shock Effective altitude sea levelShock and vibration Recommended mounting Corrosive environment Air cleanlinessVibration Acoustics Mounting configuration dimensions Mechanical specificationsDrive error recovery procedures Defect and error managementDrive internal defects/errors SAS system errors Deferred Auto-Reallocation Background Media ScanMedia Pre-Scan Idle Read After Write Drive orientation InstallationAir flow CoolingGrounding Drive mountingSavvio 15K SAS Product Manual, Rev. B Interface requirements SAS featuresDual port support Commands supported by Savvio SAS family drive Scsi commands supportedCommands supported by Savvio SAS family drive Commands supported by Savvio SAS family drive Commands supported by Savvio SAS family drive Savvio inquiry data Mode Sense dataInquiry data Page Mode Data Header 04 45 dc cc 00 00 02 Miscellaneous status Miscellaneous operating features and conditionsMiscellaneous features SAS physical interface Datum B Section C C Section a a Connector requirements Physical characteristicsElectrical description Pin descriptionsSAS transmitters and receivers SAS pin descriptionsSignal characteristics Receive eye mask General interface characteristicsEye masks Eye masks overview Z1 OP Jitter tolerance masksPeak-to Transmitter signal characteristicsSinusoidal JitterReceiver signal characteristics Compliant jitter test pattern Cjtpat Maximum allowable jitterReceiver jitter tolerance Impedance requirements Sheet 1 Impedance specificationsElectrical TxRx connections Transmitter characteristicsImpedance requirements Sheet 2 = -5,437dB Shows the zero-length test load Receiver characteristics Savvio 15K SAS Product Manual, Rev. B Internet Seagate Technology support servicesPresales Support Technical SupportData Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Numerics IndexPage SAS See also cooling