Seagate ST336705LW/LC, ST318405LW/LC, ST39205LW/LC manual Drive activity remote LED signal status

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Cheetah 36XL Product Manual, Rev. E

73

Table 18: Disc drive SCSI timing (Continued)

	Waveform	Waveform
Description	symbol [1]	table [1]	Typical timing


Data In Byte Transfer (parameter)	T24	4.5-12	0.04 ∝s

Data Out Byte Transfer (parameter)	T25	4.5-13	0.04 ∝s

Next Data In Byte Access (parameter)	T26	4.5-12	0.12 ∝s

Next Data Out Byte Access (parameter)	T27	4.5-13	0.12 ∝s

Data In Byte Transfer (media) [2]	T28	4.5-12	0.04 ∝s

Data Out Byte Transfer (media) [2]	T29	4.5-13	0.04 ∝s

Next Data In Byte access (media [2]	T30	4.5-12	0.12 ∝s

Next Data Out Byte access (media [2]	T31	4.5-13	0.12 ∝s

MSG IN Byte Transfer	T32	4.5-5,7,8,14,15	0.04 ∝s

MSG OUT Byte Transfer	T33	4.5-2	0.04 ∝s

STATUS Byte Transfer	T34	4.5-5,8,15	0.04 ∝s

Synchronous Data Transfer Characteristics:

Request Signal Transfer Period [3]	–	–	various (800 ns max)

Notes.

[1]See the SCSI Interface Product Manual, part number 75789509, Timing examples section.

[2]Maximum SCSI asynchronous interface transfer rate is given in Section 4.2.3 of this manual.

[3]Synchronous Transfer Period is determined by negotiations between an Initiator and a Drive. The Drive is capable of setting periods as given in Section 9.5. See also the Synchronous data transfer section and the Extended messages section of the SCSI Interface Product Manual, for a description of synchronous data transfer operation.

9.11Drive activity remote LED signal status

The following table provides drive activity remote LED signal status

Note. There is no drive activity LED mounted on the drive PCBA.

Table 19: Drive activity remote LED signal status

Spindle status	Command status	Remote LED signal status


Spinning up with DC power applied	N/A	On until spinup is complete

Spun down	Start Unit	On while processing the command

Powered down by removal of DC power	N/A	Off due to absence of power

Spun up	Stop Unit	On while processing the command

Spun down	No command activity	Off

Spun down	Write/Read Buffer	On while processing the command

Spun down	SCSI Bus Reset	On while processing the reset

Spun down	Test Unit Ready	On while processing the command

Spun up	No command activity	Off

Spun up	Write/Read	On while processing the command

Spun up	SCSI Bus Reset	On while processing the reset

Spun up	Test Unit Ready	On while processing the command

Spun up	Format with Immediate option on	On while the command is initially processed

Spun up	Format without Immediate	LED toggles on/off on each cylinder boundary

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Contents Cheetah 36XL Family ST336705LW/LC ST318405LW/LC ST39205LW/LC Page Cheetah 36XL Family ST336705LW/LC ST318405LW/LC ST39205LW/LC Page Revision Date Writer/Engineer Sheets Affected Revision status summary sheetPage Contents Interface requirements Defect and error managementInstallation Seagate Technology support servicesCheetah 36XL Product Manual, Rev. E Vii List of FiguresPage Cheetah 36XL family drive ST336705LC shown ScopeCheetah 36XL Product Manual, Rev. E Applicable standards and reference documentation Taiwanese Bsmi Australian C-TickKorean MIC General description Cheetah 36XL family drive Reliability Cheetah 36XL Product Manual, Rev. E Standard featuresMedia characteristics PerformanceProgrammable drive capacity Factory installed accessoriesOptions factory installed Formatted capacitiesPerformance characteristics Prefetch/multi-segmented cache control Ultra2 Scsi Ultra160 ScsiStart/stop time Caching write data Cache operationPrefetch operation Cheetah 36XL Product Manual, Rev. E Cheetah 36XL Product Manual, Rev. E Reliability specifications Service philosophy Reliability and servicePreventive maintenance Service lifeControlling S.M.A.R.T 7 S.M.A.R.TPredictive failures Performance impactReporting control Determining rateInvoking DST State of the drive prior to testingDST Failure Definition ImplementationLog page entries Product warrantyShort test Function Code 001b Extended test Function Code 010bProduct repair and return information Cheetah 36XL Product Manual, Rev. E DC power requirements Physical/electrical specificationsAC power requirements 3 12 V Current profile Power sequencingConducted noise immunity Typical ST336705 drive +12 V current profile Typical ST39205 drive +12 V current profile TypicalST318405 drive +5 V current profile Power dissipation ST336705 Os per Second Cheetah 36XL Product Manual, Rev. E ST318405Environmental limits TemperatureST39205 Shock Relative humidityEffective altitude sea level Shock and vibrationPackage size Packaged/product weight Drop height Recommended mounting Acoustics Air cleanlinessVibration LW mounting configuration dimensions LC mounting configuration dimensions Drive internal defects Defect and error managementDrive error recovery procedures Scsi systems errors Drive ID/option select header InstallationConfigure drive options FormattingDo not install jumpers retain cover J5 jumper header on LW model only J2 option select header Does not apply to LC models Cheetah 36XL Product Manual, Rev. E Function descriptionGrounding Drive orientationCooling Drive mountingScsi interface messages supported Interface requirementsScsi interface commands supported Cheetah 36XL Product Manual, Rev. E Commands supported by Cheetah 36XL family drive Inquiry Vital Product data Mode Sense dataCheetah 36XL Product Manual, Rev. E Mode Sense Data Cheetah 36XL Product Manual, Rev. E Mode sense data, ST318405 values Bytes Cheetah 36XL Product Manual, Rev. E Mode sense data, ST39205 values Bytes Cheetah 36XL Product Manual, Rev. E Condition/features supported Physical interface DC cable and connector2 REQ/ACK offset Pin Power Scsi interface cable requirements Scsi interface physical descriptionST336705LC, ST318405LC and ST39205LC Mating connectorsMating connectors for LW model drives Mating connectors for LC model drivesScsi ID Right-angle to Pcba connectorsNonshielded 68 pin Scsi device connector used on LW drives Nonshielded 80 pin Scsi SCA-2 connector, used on LC drives GND +DBP1 Charge 68Cheetah 36XL Product Manual, Rev. E Multimode-SE and LVD alternatives Multimode signalsElectrical description Input characteristics Output characteristicsLC drives General cable characteristicsTerminator requirements Terminator power LW drives Low voltage differential I/O circuitsDisc drive Scsi timing Drive activity remote LED signal status Cheetah 36XL Product Manual, Rev. E Technical Support Seagate Technology support services Online ServicesAutomated Services Presales SupportEuropean Support Services Customer Service CSOUSA/Canada/Latin America Support Services Call Center Toll-free Direct dial Africa/Middle East Support ServicesAsia/Pacific Support Services Cheetah 36XL Product Manual, Rev. E Index Symbols Cheetah 36XL Product Manual, Rev. E LED PCB System chassis Page