Seagate ST600MM0026, ST9600204FC Active LED Out, Enable port bypass signals, Motor start controls

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9.5.8Active LED Out

The Active LED Out signal is driven by the drive as indicated in Table 22.

Table 22: Active LED Out conditions

Normal command activity	LED status

Spun down and no activity	Slow blink (20% on and 80% off a 2 sec cycle)

Spun down and activity (command executing)	On

Spun up and no activity	On

Spun up and activity (command executing)	Off

Spinning up or down	Blinks steadily (50% on and 50% off)

Format in progress	Toggles on/off

Write Same command in progress	Togles on/off

The Active 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.

9.5.9Enable port bypass signals

The – Enable Bypass Port A (– EN BYP Port A) and – Enable Bypass Port B (– EN BYP Port B) signals control the port bypass circuits (PBC) located external to the disk drive. The PBC allows a loop to remain functional in the event of a drive failure or removal. When these signals are active, low, the PBC bypasses the drive on the associated port. When an Enable Bypass signal is active, the corresponding Port Bypass LED signal in con- nector J1 is driven low by the disk drive. A pull down resistor, 1K, located with the PBC should be used to insure the bypass is enabled if the disk drive is not installed.

Failure modes detected by the disk drive that will enable bypass include:

•Transmitter/receiver wrap test failure

•Loss of receive clock

•Loss of transmission clock

•Drive interface hardware error

9.5.10Motor start controls

The drive’s motor is started according to the Start_1 and Start_2 signals described in Table 23. The state of these signals can be wired into the backplane socket or driven by logic on the backplane.

Table 23:	Motor start control signals

Case	Start_2	Start_1	Motor spin function

1	Low	Low	Motor spins up at DC power on.

2	High	Low	Motor spins up only when SCSI Start command is received.

3	Low	High	Motor spins up after a delay of 12 seconds times the modulo 8 value
			of the numeric SEL ID of the drive from DC power on.

4	High	High	The drive will not spin up.

62	Savvio 10K.4 FC Product Manual, Rev. A

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Contents Savvio 10K.4 FC ST9600204FC ST9450404FCRevision history Rev. a 03/26/10 Initial releaseContents Installation Seagate Technology support services Savvio 10K.4 FC Product Manual, Rev. a Scope Standards, compliance and reference documents StandardsElectromagnetic compatibility Electromagnetic susceptibilityEuropean Union Restriction of Hazardous Substances RoHS Reference documents Ncits TR-19General description Standard features Media descriptionFormatted capacities PerformanceReliability Programmable drive capacity Factory-installed optionsUser-installed accessories Performance characteristics Internal drive characteristicsAccess time Seek performanceFormat command execution time minutes General performance characteristicsStart/stop time Prefetch/multi-segmented cache controlCache operation Caching write data Prefetch operationReliability specifications Error ratesRecoverable Errors Unrecoverable ErrorsReliability and service Seek errorsInterface errors Preventive maintenancePerformance impact 4 S.M.A.R.TControlling S.M.A.R.T Reporting control Determining ratePredictive failures Thermal monitorState of the drive prior to testing Temperature Log Page 0DhDrive Self Test DST DST failure definitionInvoking DST Short and extended testsShort test Function Code 001b Extended test Function Code 010bProduct warranty AbortPowerChoice modes Physical/electrical specificationsPowerChoiceTM power management AC power requirements DC power requirements DC power requirements for ST9600204FC model 2Gb 4Gb AmpsDC power requirements for ST9450404FC model 2Gb 4Gb Amps Conducted noise immunity General DC power requirement notesPower sequencing Current profiles Savvio 10K.4 FC Product Manual, Rev. a Power dissipation ST9600204FCST9450404FC Relative humidity Temperature a. OperatingEnvironmental limits Shock Effective altitude sea level a. OperatingShock and vibration Package size Packaged/product weight Drop height Recommended mountingAir cleanliness Vibration a. Operating-normalAcoustics Corrosive environmentChina Restriction of Hazardous Substances RoHS Directive Mechanical specifications Mounting configuration dimensionsDrive error recovery procedures Defect and error managementDrive internal defects/errors 77.87 Media Pre-Scan FC-AL system errorsBackground Media Scan Deferred Auto-Reallocation Idle Read After WriteInstallation Drive ID/option selectionDrive orientation CoolingDrive mounting Air flowGrounding FC-AL features Fibre Channel link service framesLink services supported Type of frame Interface requirementsFC Scsi FCP response codes Function name Response code Fibre Channel task management functionsFibre Channel task management responses Fibre Channel port login NPort login Plogi payload BytesFibre Channel port login accept Fibre Channel Process LoginNPort Login Accept ACC payload Bytes Process Login Plri payloadFibre Channel Process Login Accept Fibre Channel fabric loginProcess Login Accept ACC payload Bytes Fabric Login Flogi payload BytesFibre Channel fabric accept login Fabric Login Accept ACC payload BytesDual port support Fibre Channel Arbitrated Loop optionsFC-AL options supported Option SupportedScsi commands supported Supported commands Command code Command nameVerify error recovery page 07h Savvio 10K.4 FC Product Manual, Rev. a Temperature page 0Dh Savvio 10K.4 FC inquiry data Bytes Data hex Mode Sense dataInquiry data Page Mode Data Header 34 65 f8 70 00 00 02 Miscellaneous operating features and conditions Supported Feature or conditionPhysical description Physical characteristicsFC-AL physical interface Pin descriptions Connector requirements Electrical description FC-SCA pin descriptions Pin Signal name Signal type FC-AL transmitters and receiversPower Fault LED OutMotor start controls Enable port bypass signalsActive LED Out Parallel Enclosure Services Interface ESI 11 SEL6 through SEL0 ID linesAlpa SEL ID Device control codes Signal characteristicsTTL input characteristics FC Differential input LED driver signalsFC Differential output Receive eye diagram Eye diagram data values Link rate GHz Web Seagate Technology support servicesWarranty Support Direct.seagate.com Spp.seagate.com Technical Support Warranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Presales SupportSavvio 10K.4 FC Product Manual, Rev. a Index FCP Flogi Plogi Page See also cooling Page Seagate Technology LLC