Seagate ST3450857FC, ST3300557FC Active LED Out, Enable port bypass signals, Motor start controls

Page 75

12.5.8Active LED Out

The Active LED Out signal is driven by the drive as indicated in Table 25.

Table 25: 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, each cylinder change

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.

12.5.9Enable 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 disc 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 disc drive. A pull down resistor, 1K, located with the PBC should be used to insure the bypass is enabled if the disc drive is not installed.

The Enable Bypass signal is active under failing conditions within the drive, on detection of the Loop Port Bypass primitive sequence, or on removal of the drive. In the bypass state the drive continues to receive on the inbound fibre. Enable Bypass may be deactivated by detection of a Loop Port Enable primitive sequence if the drive has completed self-test and a hardware failure is not present.

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

•Transmitter/receiver wrap test failure

•Loss of receive clock

•Loss of transmission clock

•Drive interface hardware error

12.5.10Motor start controls

The drive’s motor is started according to the Start_1 and Start_2 signals described in Table 26. The state of these signals can be wired into the backplane socket or driven by logic on the backplane.

Table 26:

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.

 

 

 

 

Cheetah 15K.7 FC Product Manual, Rev. C

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Contents ST3600857FC ST3450657FC ST3300457FC Standard models Self-Encrypting Drive modelsSED Fips 140-2 models Page Contents Interface requirements Defect and error managementInstallation About Fips About self-encrypting drivesCheetah 15K.7 FC Product Manual, Rev. C Iii Cheetah 15K.7 FC Product Manual, Rev. C Seagate Online Support and Services Seagate Technology support servicesScope Electromagnetic susceptibility Applicable standards and reference documentationStandards Electromagnetic compatibilityEuropean Union Restriction of Hazardous Substances RoHS Ncits TR-20 Reference documentsGeneral description Standard features Formatted capacities Media descriptionPerformance ReliabilityFactory-installed options User-installed accessoriesProgrammable drive capacity Access time Performance characteristicsInternal drive characteristics Seek performance characteristicsST3600057FC ST3450857FC ST3300657FC Format command execution time minutesGeneral performance characteristics Start/stop timeCache operation Prefetch/multi-segmented cache controlPrefetch operation Caching write dataUnrecoverable Errors Reliability specificationsError rates Recoverable ErrorsPreventive maintenance Reliability and serviceSeek errors Interface errorsMilliseconds 4 S.M.A.R.TControlling S.M.A.R.T Performance impactThermal monitor Temperature Log Page 0DhDetermining rate Predictive failuresImplementation State of the drive prior to testingDrive Self Test DST DST failure definitionLog page entries Short and extended testsShort test Function Code 001b Extended test Function Code 010bProduct warranty ShippingProduct repair and return information Physical/electrical specifications AC power requirementsDC power requirements ST3450857FC DC power requirements Gbit Amps ST3600057FC DC power requirements Gbit AmpsST3300657FC DC power requirements Gbit Amps General DC power requirement notesPower sequencing Conducted noise immunityCurrent profiles Typical ST3450857FC current profiles Typical ST3300657FC current profiles 600GB model Power dissipation450GB models Temperature a. Operating Environmental limits300GB models Effective altitude sea level a. Operating Relative humidityPackage size Packaged/product weight Drop height Shock and vibrationShock Recommended mounting Air cleanliness Vibration a. Operating-normalAcoustics Corrosive environment RoHS compliance statementElectromagnetic susceptibility See Section Mounting configuration dimensions Mechanical specificationsAbout Fips PurposeLevel 2 security Data encryption Controlled accessAdmin SP About self-encrypting drivesData bands Default passwordRandom number generator RNG Drive lockingCryptographic erase Authenticated firmware downloadPower requirements Supported commandsDefect and error management Drive internal defects/errorsDrive error recovery procedures Page These values are subject to change FC-AL system errorsBackground Media Scan Media Pre-ScanDeferred Auto-Reallocation Idle Read After Write Installation Drive ID/option selectionDrive orientation Air flow CoolingGrounding Drive mountingInterface requirements FC-AL featuresFibre Channel link service frames Link services supported Type of frameFibre Channel task management functions Fibre Channel task management responsesFC Scsi FCP response codes Function name Response code NPort login Plogi payload Bytes Fibre Channel port loginFibre Channel port login accept NPort Login Accept ACC payload BytesProcess Login Plri payload Fabric Login Flogi payload Bytes Fibre Channel Process Login AcceptFibre Channel fabric login Process Login Accept ACC payload BytesFabric Login Accept ACC payload Bytes Fibre Channel fabric accept loginFC-AL options supported Scsi commands supportedDual port support Fibre Channel Arbitrated Loop optionsSupported commands Cheetah 15K.7 FC Product Manual, Rev. C Cheetah 15K.7 FC Product Manual, Rev. C Background Medium Scan 15h Mode Sense data Inquiry dataCheetah 15K.7 FC inquiry data Bytes Data hex Page Mode Data Header Block Descriptor Ec b2 5c 00 00 02 Miscellaneous status Miscellaneous operating features and conditionsMiscellaneous features Supported Feature or conditionPhysical characteristics FC-AL physical interfacePhysical description Connector requirements Electrical descriptionPin descriptions FC-SCA pin descriptions Pin Signal name Signal type Pin Signal name Signal typeFC-AL transmitters and receivers Fault LED Out PowerEnable port bypass signals Active LED OutMotor start controls 12.5.11 SEL6 through SEL0 ID lines Parallel Enclosure Services Interface ESISetting Arbitrated loop physical address Alpa valuesHex Dec Signal characteristics TTL input characteristics provides the TTL characteristicsDevice control codes LED driver signals FC Differential outputFC Differential input Receive eye diagram Eye diagram data values Link rate GHz Numerics IndexDevctrlcode FCP Mtbf Page See also cooling Page Cheetah 15K.7 FC Product Manual, Rev. C
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