Seagate ST973451FC manual 11 SEL6 through SEL0 ID lines, Parallel Enclosure Services Interface ESI

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Table 22: Motor start control signals

Case

Start_2

Start_1

Motor spin function

4

High

High

The drive will not spin up.

9.5.11SEL_6 through SEL_0 ID lines

The SEL_6 through SEL_0 ID lines determine drive address, and, optionally, for an Enclosure Services Inter- face. When the Parallel ESI line is high, the enclosure backpanel must provide address information on the SEL line. Refer to table 23 for a mapping of SEL to FC-AL physical addresses (AL_PA). You can think of the SEL lines as the equivalent of a backpanel logic plug. The drives does not provide pull up resistors on these lines. The backpanel is required to provide high and low inputs to the SEL_ID lines per the specifications in table 25 on page 64.

Note. Table 23 gives AL_PA values for each SEL value. The first entry in the table is SEL_ID 00. The last entry is SEL_ID 7D. SEL_ID 7E is AL_PA 00 which is not valid for an NL_Port, so is not included in the table. Also, SEL_ID 7Fh does map to a valid AL_PA; however, this value signals the drive that physical addresses are not being assigned using the SEL lines and that a “soft” address will be determined by FC-AL loop initialization.

When the Parallel ESI line is low, the enclosure backpanel logic switches to ESI mode if supported. There are two modes of ESI, seven bits of enclosure status and a bidirectional mode. ESI support and the mode are determined by the drive using a discovery process. Refer to the Fibre Channel Interface Manual for a descrip- tion of ESI operation.

9.5.11.1Parallel Enclosure Services Interface (ESI)

The parallel ESI line is an output from the drive. This line provides the enclosure with an indication of the present function of the SEL lines. A high level, the default state, indicates the drive requires address informa- tion on the SEL lines. A low level indicates the drive is attempting an ESI transfer. The enclosure may not sup- port ESI on any or all drive locations. It may only support the address function. Support of ESI is discovered by the drive. Refer to the Fibre Channel Interface Manual for a description of ESI operations.

62	Savvio 15K.1 FC Product Manual, Rev. B

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Contents Savvio 15K.1 FC ST973451FC ST936751FCPage Contents Installation Physical/electrical specificationsDefect and error management Interface requirementsSeagate Technology support services Savvio 15K.1 FC Product Manual, Rev. B List of Figures Page Scope Savvio 15K.1 family disc driveSavvio 15K.1 FC Product Manual, Rev. B Electromagnetic compatibility Applicable standards and reference documentationStandards Electromagnetic susceptibilityEuropean Union Restriction of Hazardous Substances RoHS Reference documents Ncits TR-19Savvio 15K.1 FC Product Manual, Rev. B General description Standard features Reliability Media descriptionPerformance Formatted capacitiesOptions Factory-installed accessoriesProgrammable drive capacity Seek performance characteristics Performance characteristicsInternal drive characteristics Access timeGeneral performance characteristics Format command execution timeStart/stop time Cache operation Prefetch/multi-segmented cache controlCaching write data Prefetch operation Error rates Reliability specificationsRecoverable Errors Seek errors Reliability and serviceUnrecoverable Errors Interface errors4 S.M.A.R.T Hot plugging the driveControlling S.M.A.R.T Determining rate Performance impactReporting control Predictive failuresDrive Self Test DST Temperature Log Page 0DhParameter Code Description DST failure definitionInvoking DST State of the drive prior to testingImplementation Short and extended testsAbort Product warrantyLog page entries ShippingProduct repair and return information AC power requirements Physical/electrical specificationsDC power requirements General DC power requirement notes Current profiles Power sequencingConducted noise immunity +5V +12VTypical ST936751FC drive +12V and +5V current profiles CURRENT/POWER vs Throughput FC 1GB Random 8 Block Reads Power dissipationST973451FC CURRENT/POWER vs Throughput FC 4GB Random 8 Block Reads FC CURRENT/POWER vs Throughput FC 1GB Random 8 Block Reads ST936751FCFC CURRENT/POWER vs Throughput FC 4GB Random 8 Block Reads TemperatureEnvironmental limits Shock and vibration Relative humidityEffective altitude sea level ShockPackage size Packaged/product weight Drop height Recommended mounting Vibration Air cleanlinessCorrosive environment Acoustics Mechanical specifications Drive dimensions inchesDrive internal defects/errors Defect and error managementDrive error recovery procedures FC-AL system errors Media Pre-Scan Background Media ScanDeferred Auto-Reallocation Idle Read After Write Drive orientation InstallationCooling Drive mounting GroundingLink services supported Type of frame FC-AL featuresFibre Channel link service frames Interface requirementsFibre Channel Scsi FCP task management functions Fibre Channel task management functionsFibre Channel task management responses Task name SupportedFibre 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 nameDisconnect/reconnect control page 02h Savvio 15K.1 FC Product Manual, Rev. B LBdata Supported commands Command code Supported 4 Command name Inquiry data Savvio inquiry data Bytes Data hexSupported Feature or condition Miscellaneous operating features and conditionsMiscellaneous features Miscellaneous statusFC-AL physical interface Physical characteristicsPhysical description Part description Positions Part number Features Connector requirementsElectrical description Pin Signal name Signal type FC-SCA pin descriptions Pin Signal name Signal typePin descriptions Fault LED Out PowerFC-AL transmitters and receivers Active LED Out Enable port bypass signalsMotor start controls Parallel Enclosure Services Interface ESI 11 SEL6 through SEL0 ID linesArbitrated loop physical address Alpa values SettingHex Dec TTL input characteristics Signal characteristicsDevice control codes Differential Pecl output Differential Pecl inputSavvio 15K.1 FC Product Manual, Rev. B Presales Support Seagate Technology support servicesInternet Technical SupportData Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Index NumericsFAN Page Plogi SEL ID See also cooling