Seagate ST336807FC manual LED driver signals, LED drive signal, Differential Pecl output

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9.6.2LED driver signals

Fault and Active LED signals are located in the FC-SCA connector (J1) and through the indicator connector (J6). See Table 34 for the output characteristics of the LED drive signals.

Table 34:	LED drive signal

State		Current drive available	Output voltage

LED off, high		0 < IOH < 100µA

LED on, low		IOL < -30 mA	0 < VOL < 0.8V

9.6.3Differential PECL output

The serial PECL output signal voltage characteristics are provided in Table 35. The outputs are not AC coupled in order to deliver maximum signal without rise and fall time degradation. You must AC couple the receiver to isolate potentially different DC characteristics of the outputs and the receiver.

Table 35: Differential PECL output characteristics

Description	Parameter

Serial output voltage swing	600 < Vout < 1300 mV

Figure 16 provides the data output valid eye diagram relative to the bit cell time. Table 37 lists the data values.

Bit Time

Vout (mv)

XMIT Eye

Figure 16. Transmit eye diagram

9.6.4Differential PECL input

The serial PECL input signal voltage characteristics are provided in Table 36.

Table 36: Differential PECL input characteristics

Description	Parameter	Notes

Serial input voltage swing	400 < Vin < 2.000 mV	AC coupled

68	Cheetah 10K.7 36GB FC Product Manual, Rev. A

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Contents Cheetah 10K.7 FC Page Cheetah 10K.7 FC Page Revision Date Sheets Affected Revision status summary sheetRev. a 05/04/05 All. Initial release Page Contents Physical/electrical specifications Defect and error managementInstallation Interface requirementsSeagate Technology support services Viii Cheetah 10K.7 36GB FC Product Manual, Rev. a List of Figures Cheetah 10K.7 FC family disc driveCheetah 10K.7 36GB FC Product Manual, Rev. a Scope Cheetah 10K.7 FC family disc driveCheetah 10K.7 36GB FC Product Manual, Rev. a Applicable standards and reference documentation StandardsElectromagnetic compatibility Electromagnetic susceptibilityElectromagnetic compliance European Union Restriction of Hazardous Substances RoHSReference documents Fibre Channel Interface ManualCheetah 10K.7 36GB FC Product Manual, Rev. a General description Standard features Media descriptionPerformance ReliabilityFormatted capacities Programmable drive capacityUser-installed accessories Factory-installed accessoriesFactory-installed options ST336807FC Performance characteristicsInternal drive characteristics Seek performance characteristics Access timeFormat command execution time in minutes Generalized performance characteristicsCache operation Start/stop timePrefetch/multi-segmented cache control Caching write data Prefetch operation Cheetah 10K.7 36GB FC Product Manual, Rev. a Recoverable Errors Reliability specificationsError rates Reliability and service Controlling S.M.A.R.T Hot plugging the drive4 S.M.A.R.T Performance impact MillisecondsReporting control Determining rateDrive Self Test DST Temperature Log page 0DhParameter Code Description State of the drive prior to testing DST Failure DefinitionImplementation Invoking DSTProduct warranty Short test Function Code 001bExtended test Function Code 010b Log page entriesShipping Product repair and return informationPhysical/electrical specifications AC power requirementsDC power requirements ST336807FC DC power requirementsConducted noise immunity General DC power requirement notesPower sequencing Typical ST336807FC drive, 2 Gbit, +12V current profile Typical ST336807FC drive, 2 Gbit, +5V current profilePower dissipation ST336807FCTemperature Environmental limitsRelative humidity Effective altitude sea levelShock Package size Packaged/product weight Drop heightShock and vibration Recommended mounting Corrosive environment Air cleanlinessVibration Mechanical specifications AcousticsMounting configuration dimensions Drive error recovery procedures Defect and error managementDrive internal defects/errors 77.7 Media Pre-Scan FC-AL system errorsBackground Media Scan Cheetah 10K.7 36GB FC Product Manual, Rev. a Installation Drive ID/option selectionLED connections Physical interface Drive FrontCooling 1 J6 connector requirementsDrive orientation Drive mounting GroundingFC-AL features Fibre Channel link service framesLink services supported Type of frame Link serviceFibre Channel task management functions Fibre Channel Scsi FCP task management functionsFibre Channel task management responses FC Scsi FCP response codesBytes Fibre Channel port loginNPort login Plogi payload Fibre Channel port login accept NPort Login Accept ACC payloadFibre Channel Process Login Process Login Plri payloadFibre Channel Process Login Accept Process Login Accept ACC payloadFibre Channel fabric login Fabric Login Flogi payloadFibre Channel fabric accept login Fabric Login Accept ACC payloadDual port support Fibre Channel Arbitrated Loop optionsFC-AL options supported Option SupportedCommand code Supported Command name Scsi commands supportedSupported commands Supported commands Supported commands Supported commands Supported commands Mode Sense data Inquiry dataCheetah 10K.7 FC inquiry data Bytes Data hexPage DEF CHG Miscellaneous operating features and conditions Miscellaneous featuresSupported Feature or condition Miscellaneous statusPhysical description Physical characteristicsFC-AL physical interface Connector requirements Part description Positions Part number FeaturesJ6 connector dimensions Electrical descriptionFC-SCA pin descriptions Pin Signal name Signal typePin descriptions FC-AL transmitters and receivers PowerFault LED Out Enable port bypass signals Normal command activity LED statusActive LED Out Active LED Out conditionsMotor start control signals Parallel Enclosure Services Interface ESIMotor start controls 11 SEL6 through SEL0 ID linesHex Dec SettingArbitrated loop physical address Alpa values Signal characteristics LED driver signals LED drive signalDifferential Pecl output characteristics Differential Pecl input characteristicsEye diagram data values Link rate GHzCheetah 10K.7 36GB FC Product Manual, Rev. a Seagate Technology support services Internet MySeagate Reseller.seagate.comPresales Support Technical SupportData Recovery Services Warranty ServiceData Recovery Services Authorized Service Centers Toll-free support numbers FAX services-All Europe toll callCall center Presales and Technical Support Warranty Service Asia/Pacific support services Publication feedback survey Cheetah 10K.7 36GB FC Product 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