Seagate ST9450405FC, ST9900805FC Active LED Out, Enable port bypass signals, Motor start controls

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10.5.8Active LED Out

The Active LED Out signal is driven by the drive as indicated in Table 26.

Table 26: 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	Toggles 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.

10.5.9Enable 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

10.5.10Motor start controls

The drive’s motor is started according to the Start_1 and Start_2 signals described in Table 27. The state of these signals can be wired into the backplane socket or driven by logic on the backplane.

Table 27:	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.

72	Savvio 10K.5 FC Product Manual, Rev. D

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Contents Savvio 10K.5 FC ST9900805FC ST9600205FC ST9450405FC ST9300605FCRevision history Contents Installation Savvio 10K.5 FC Product Manual, Rev. D Iii Savvio 10K.5 FC Product Manual, Rev. D Seagate Technology support services Seagate Online Support and ServicesScope Electromagnetic compatibility Applicable standards and reference documentationStandards Electromagnetic susceptibilityEuropean Union Restriction of Hazardous Substances RoHS Reference documents China Restriction of Hazardous Substances RoHS DirectiveGeneral description Standard features Media descriptionPerformance ReliabilityFormatted capacities Factory-installed options Programmable drive capacityAccess time Performance characteristicsInternal drive characteristics Seek performanceStart/stop time Format command execution time minutesGeneral performance characteristics Prefetch/multi-segmented cache controlCache operation Caching write data Prefetch operationRecoverable Errors Reliability specificationsError rates Unrecoverable ErrorsInterface errors Reliability and serviceSeek errors Preventive maintenance4 S.M.A.R.T Controlling S.M.A.R.TPerformance impact Predictive failures Reporting controlDetermining rate Thermal monitorDrive Self Test DST State of the drive prior to testingTemperature Log Page 0Dh DST failure definitionShort test Function Code 001b Invoking DSTShort and extended tests Extended test Function Code 010bProduct warranty AbortStorage Physical/electrical specifications PowerChoiceTM power managementPowerChoice modes AC power requirements DC power requirements DC power requirements for ST9900805FC model 2Gb 4Gb AmpsDC power requirements for ST9600205FC model 2Gb 4Gb Amps DC power requirements for ST9450405FC model 2Gb 4Gb Amps DC power requirements for ST9300605FC model 2Gb 4Gb Amps General DC power requirement notes Power sequencingConducted noise immunity Current profiles Savvio 10K.5 FC Product Manual, Rev. D Savvio 10K.5 FC Product Manual, Rev. D Savvio 10K.5 FC Product Manual, Rev. D Power dissipation ST9900805FCST9600205FC ST9450405FC ST9300605FC Temperature a. Operating Environmental limitsRelative humidity Effective altitude sea level a. Operating Shock and vibrationShock Recommended mounting Air cleanliness Vibration a. Operating-normalAcoustics Corrosive environment Mechanical specifications Mounting configuration dimensionsDefect and error management Drive internal defects/errorsDrive error recovery procedures FC-AL system errors Background Media Scan Media Pre-ScanDeferred Auto-Reallocation Protection Information PI Setting and determining the current Type LevelIdle Read After Write Levels of PIIdentifying a Protection Information drive Drive orientation InstallationDrive ID/option selection CoolingDrive mounting Air flowGrounding Link services supported Type of frame FC-AL featuresFibre Channel link service frames Interface requirementsFibre Channel task management functions Fibre Channel task management responsesFC Scsi FCP response codes Function name Response code Fibre Channel port login NPort login Plogi payload BytesNPort Login Accept ACC payload Bytes Fibre Channel port login acceptFibre Channel Process Login Process Login Plri payloadProcess Login Accept ACC payload Bytes Fibre Channel Process Login AcceptFibre Channel fabric login Fabric Login Flogi payload BytesFibre Channel fabric accept login Fabric Login Accept ACC payload BytesFC-AL options supported Dual port supportFibre Channel Arbitrated Loop options Option SupportedScsi commands supported Supported commands Command code Command nameVerify error recovery page 07h Savvio 10K.5 FC Product Manual, Rev. D Temperature page 0Dh Mode Sense data Inquiry dataSavvio 10K.5 FC inquiry data Bytes Data hex Page Mode Data Header 00 00 00 00 45 dd 2f b0 00 00 00 00 00 00 02 00 00 00 00 34 65 f8 70 00 00 00 00 00 00 02 00 00 00 00 22 ec b2 5c 00 00 00 00 00 00 02 Miscellaneous operating features and conditions Supported Feature or conditionPhysical characteristics FC-AL physical interfacePhysical description Connector requirements Electrical descriptionPin descriptions FC-SCA pin descriptions Pin Signal name Signal type FC-AL transmitters and receiversPower Fault LED OutEnable port bypass signals Active LED OutMotor start controls Parallel Enclosure Services Interface ESI 10.5.11 SEL6 through SEL0 ID linesAlpa SEL ID Signal characteristics 10.6.1 TTL input characteristicsDevice control codes LED driver signals FC Differential outputFC Differential input Receive eye diagram Eye diagram data values Link rate GHz Savvio 10K.5 FC Product Manual, Rev. D Index Devctrlcode Flogi Plogi Page Page Page Savvio 10K.5 FC Product Manual, Rev. D