IBM manual SSA Link Cable, SSA Link Electrical Characteristics, Option Pins and Indicators

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U S E R RESPONSIBLE F O R V E R I F Y I N G VERSION A N D COMPLETENESS

O E M F U N C T I O N A L S P E C I F I C A T I O N U L T R A S T A R X P ( D F H C ) SSA M O D E L S 1.12/2.25 G B - 1.0" H I G H

5.3 SSA Link Cable

The SSA link cable must meet the specifications described in the Electrical Specifications section of Serial Storage Architecture S S A - P H (Transport Layer), X3T10.1/94-015 rev 01.

5.4 SSA Link Electrical Characteristics

The drive SSA link line driver, line receiver, and line receiver termination are fully compliant with the specifi- cations described in the Electrical Specifications section of Serial Storage Architecture S S A - P H (Transport Layer), X3T10.1/94-015 rev 01.

5.5 Option Pins and Indicators

Ultrastar XP SSA drives contain option pins and/or indicators used to sense and report fault conditions, and to enable certain features of the drive. The electrical characteristics and requirements of these pins are fully compliant with the specifications described in the Electrical Specification section of Serial Storage Architec- ture S S A - P H (Transport Layer), X3T10.1/989D rev 01. The existence and definition of these pins are model dependent. Refer to Figure 14 on page 56 and Figure 18 on page 62 for locations of pins and LEDs on the front of the drive. Refer to Table 11 on page 64 and Table 12 on page 65 for locations of pins on the rear of the drive.

5.5.1 - Manufacturing Test Mode (Option Port Pin 1)

A low active input pin, that when active (pulled below .8V) makes pins 2, 3, 4, 6, 8 ,9 and 10 available to be redefined. Pins 5 and 7 must remain Ground and + 5 V respectively. One possible purpose for this pin is to allow a manufacturing tester to redefine the option pins to whatever functions it desires, while allowing the shipped product to return to the standard definitions in the customers environment. All models (CxC and CxB) reserve this pin but it is not connected to any internal logic.

5.5.2 - Auto Start Pin (Option Port Pin 2)

A low active input pin, that when active (pulled below 0.8 V) on CxC model causes the drive motor to spin up and become ready for media access operations after power is applied without the need to receive a Start/Stop Unit command. When inactive (pulled above 2.0 V), the drive motor shall not spin up until after the receipt of a Start/Stop Unit command. The signal is to be sampled by the device at power on, or hard reset or soft reset conditions. Refer to the "Option Pins" section of the Ultrastar X P ( D F H C ) S S A Models Interface Specification for a detailed functional description of operations associated with this pin.

This pin is not accessible on CxB models.

5.5.3 - Sync Pin (Option Port Pin 3)

The Sync input/output pin on CxC model can be used for synchronizing among devices. The synchroniza- tion is achieved by having one device uses this pin as output to transmit one sync character once per its spindle revolution. The other node may use this pin as an input and synchronize their spindle revolution position to match the Sync signal. The SSA network provide Sync character over SSA link, but this option pin allows synchronization across multiple SSA networks, or allow tighter latency of the Sync pulse. Refer to Figure 21 on page 70 for examples of Synchronization connection.

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I B M Corporation

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Contents Form Factor Disk Drive Version BM Corporation Preface Source filename=STSSHEXT When Reliability Operating LimitsContaminants Acoustic Levels Source filename=STSSHEXT Interface Controller Features FeaturesGeneral Features DescriptionReliability Features ModelsSpecifications GeneralUser bytes/logical block ub/lba User bytes/sector ub/sctSectors/logical block sct/lba Sectors/track sct/trkCapacity Equations For Each NotchFor Entire Drive Input Voltage + 5 Volts Supply Power Requirements by Model1 C1x Models + 1 2 Volts SupplyPower Calculation Examples Example 3. Power CalculationExample 1. Calculate the mean 12 volt average current Things to check when measuring 12 V supply current Example 4. Calculate the 12 volt peak currentVolt current during read/write operations C1x Models Typical 12 volt current C1x Models Typical 12 volt spin-up current C1x Models 2 C2x Models Power Calculation Examples Example 4. Calculate the 12 volt peak current Volt current during read/write operations C2x Models Typical 12 volt current C2x Models Typical 12 volt spin-up current C2x Models 3 C4x Models Power Calculation Examples Example 4. Calculate the 12 volt peak current Volt current during read/write operations C4x Models Typical 12 volt current C4x Models Typical 12 volt spin-up current C4x Models Power supply methods CxB Models4.2 DC/DC Converter Grounding Requirements of the Disk Enclosure Hot plug/unplug supportM Corporation Bring-up Sequence and Stop Times Event Nominal MaximumBring-up Sequence Times and Stop Time for C2x Models Source filename=PERFORM Workload Definition PerformanceEnvironment Definition # of segments Ub/lba +Random Command Execution TimeSequential Basic Component DescriptionsData Transfer to/from Disk Comments Data Transfer to/from SSA LinkApproximating Performance for Different Environments Theoretical Data Sector Transfer RateWhen Adaptive Caching is Enabled When Read Caching is EnabledWhen Write Caching is Enabled When Read-ahead is EnabledReordered Commands When No Seek is RequiredFor Queued Commands Back-To-Back CommandsSkew Cylinder to Cylinder SkewTrack to Track Skew Idle Time Functions Predictive Failure Analysis Servo Run Out MeasurementsServo Bias Measurements Channel CalibrationCommand Timeout Limits Save Logs and PointersDisk Sweep M Corporation Small Form Factor Models CxC Weight and DimensionsMechanical ClearancesDimensions are in millimeters Location of Side Mounting Holes of C4C Models Source filename=MECHANIC Unitized Connector Locations Source filename=MECHANIC Carrier Models CxB Dimensions CxB Models M Corporation Handle Docking and Ejection System Auto-docking Assembly Side Rails Side Rail Positioning Electrical Connector and Indicator Locations E D Locations front view CxB Models M CorporationSSA Unitized Connector Electrical InterfaceCarrier Connector PinRow SSA Link Electrical Characteristics Option Pins and IndicatorsSSA Link Cable Write Protect Option Port Pin Device Activity Pin/Indicator Option Port PinDevice Fault Pin/Indicator Option Port Pin Ground long Option Port Pin12 12V Charge and 5V Charge Power Port pin 1 Front Jumper ConnectorEarly Power Off Warning or Power Fail Power Port Pin Programmable pin 1 Option Port PinSpindle Synchronization Over Sync Hard-wire M Corporation Source filename=RELIABLE Power On Hours Examples Error DetectionSeek Error Rate ReliabilityMaximum on/off cycles Power on/off cyclesUseful Life Product LifeSpql Shipped product quality level Install Defect FreeMean Time Between Failure *MTBF Sample Failure Rate ProjectionsInstall Defect Free percentage Percent Periodic MaintenanceConnector Insertion Cycles ESD ProtectionTemperature Measurement Points Operating LimitsMaximum Reliability P F E TTemperature Measurement Points for all Models bottom view Vibration and ShockDrive Mounting Guidelines Output Vibration LimitsOperating Vibration Nonoperating Vibration V4SContaminants Operating ShockNonoperating Shock Upper Limit Sound Power Requirements Bels for C4x Models Acoustic LevelsSource filename=STANDARD Safety StandardsElectromagnetic Compatibility EMC M Corporation Bibliography Serial Storage Architecture S S a P H Transport
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