Seagate ST336918N, ST318418N, ST318438LW, ST336938LW manual

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Barracuda 36ES2 Product Manual, Rev. B

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9.10	Disc drive SCSI timing
Table 17:	Disc drive SCSI timing

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


Target Select Time (no Arbitration)		T00	N/A	<1 ∝s

Target Select Time (with Arbitration)		T01	4.5-1,2	1.93	∝s

Target Select to Command		T02	4.5-1	3.77	∝s

Target Select to MSG Out		T03	4.5-2	1.57	∝s

Identify MSG to Command		T04	4.5-3	3.36	∝s

Command to Status		T05	4.5-5	Command Dependent

Command to Data (para. In)		T06	4.5-9	Command Dependent

Command to Data (para. Out)		T07	4.5-10	Command Dependent

Command to Data (Write to Data Buffer)		T08	4.5-10	Command Dependent

Command to Disconnect MSG		T09	4.5-6	Command Dependent

Disconnect MSG to Bus Free		T10	4.5-6,14	0.52	∝s

Disconnect to Arbitration (for Reselect)		T11	4.5-6	Command Dependent
This measures disconnected CMD overhead

Target win Arbitration (for Reselect)		T12	4.5-7	3.00	∝s

Arbitration to Reselect		T13	4.5-7	1.60	∝s

Reselect to Identify MSG In		T14	4.5-7	1.39	∝s

Reselect Identify MSG to Status		T15	4.5-8	Command Dependent

Reselect Identify MSG to Data (media)		T16	4.5-11	Command Dependent

Data to Status		T17	4.5-15	Command Dependent

Status to Command Complete MSG		T18	4.5-5,8,15	0.98	∝s

Command Complete MSG to Bus Free		T19	4.5-5,8,15	0.51	∝s

Data to Save Data Pointer MSG		T20	4.5-14	4.00	∝s

Save Data Pointer MSG to Disconnect MSG		T21	4.5-14	0.79	∝s

Command Byte Transfer		T22	4.5-4	0.04	∝s

Next Command Byte Access:			4.5-4

Next CDB Byte Access (Byte 2 of 6)		T23.6.2	4.5-4	0.58	∝s

Next CDB Byte Access (Byte 3 of 6)		T23.6.3	4.5-4	0.12	∝s

Next CDB Byte Access (Byte 4 of 6)		T23.6.4	4.5-4	0.12	∝s

Next CDB Byte Access (Byte 5 of 6)		T23.6.5	4.5-4	0.12	∝s

Next CDB Byte Access (Byte 6 of 6)		T23.6.6	4.5-4	0.12	∝s

Next CDB Byte Access (Byte 2 of 10)		T23.10.2	4.5-4	0.59	∝s

Next CDB Byte Access (Byte 3 of 10)		T23.10.3	4.5-4	0.11	∝s ±1 ∝s

Next CDB Byte Access (Byte 4 of 10)		T23.10.4	4.5-4	0.12	∝s ±1 ∝s

Next CDB Byte Access (Byte 5 of 10)		T23.10.5	4.5-4	0.11	∝s ±1 ∝s

Next CDB Byte Access (Byte 6 of 10)		T23.10.6	4.5-4	0.11	∝s ±1 ∝s

Next CDB Byte Access (Byte 7 of 10)		T23.10.7	4.5-4	0.13	∝s ±1 ∝s

Next CDB Byte Access (Byte 8 of 10)		T23.10.8	4.5-4	0.12	∝s ±1 ∝s

Next CDB Byte Access (Byte 9 of 10)		T23.10.9	4.5-4	0.12	∝s ±1 ∝s

Next CDB Byte Access (Byte 10 of 10)		T23.10.10	4.5-4	0.12	∝s ±1 ∝s

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Contents Product Manual, Volume Page Product Manual, Volume Page Revision Date Writer/Engineer Sheets Affected Revision status summary sheetPage Contents Interface requirements Defect and error managementInstallation Seagate Technology support servicesBarracuda 36ES2 Product Manual, Rev. B Vii List of FiguresPage Barracuda 36ES2 family drive ST336938LW shown ScopeBarracuda 36ES2 Product Manual, Rev. B Applicable standards and reference documentation Taiwanese Bsmi Australian C-TickKorean MIC General description Reliability Standard featuresMedia characteristics PerformanceProgrammable drive capacity Factory installed accessoriesOptions factory installed Performance characteristics Prefetch/multi-segmented cache control Ultra2 Scsi Ultra160 ScsiStart/stop time Caching write data Cache operationPrefetch operation Barracuda 36ES2 Product Manual, Rev. B 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 Barracuda 36ES2 Product Manual, Rev. B DC power requirements Physical/electrical specificationsAC power requirements 3 12 V Current profile Power sequencingConducted noise immunity +5 Volt Current during spindle start Typical Amper es Amps Power dissipation ST336938/ST318438 Barracuda 36ES2 Product Manual, Rev. B ST336918/ST318418 Environmental limits TemperatureShock Barracuda 36ES2 Product Manual, Rev. B Relative humidityEffective altitude sea level Shock and vibrationRecommended mounting Acoustics Air cleanlinessBarracuda 36ES2 Product Manual, Rev. B Vibration Dimension Table Mechanical specificationsMounting configuration dimensions Barracuda 36ES2 Product Manual, Rev. B 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 J6 jumper header for N model J5 jumper header on LW models only J2 option select header for LW models Barracuda 36ES2 Product Manual, Rev. B Barracuda 36ES2 Product Manual, Rev. B Function description Air flow Drive orientationCooling Grounding Barracuda 36ES2 Product Manual, Rev. B Drive mountingBarracuda 36ES2 Product Manual, Rev. B Scsi interface messages supported Interface requirementsScsi interface commands supported Commands supported by Barracuda 36ES2 family drives Barracuda 36ES2 Product Manual, Rev. B Vendor ID Firmware numbers page C0h Inquiry Vital Product dataUnit serial number page 80h Implemented operating definition page 81hJumper settings page C2h Mode Sense data DEF CHG Barracuda 36ES2 Product Manual, Rev. B Condition/features supported Supported Status supported Physical interface DC cable and connector2 REQ/ACK offset Model drive physical interface 50-pin Scsi I/O connector Pin Power Scsi interface cable requirements Scsi interface physical descriptionMating connectors for N model drives Barracuda 36ES2 Product Manual, Rev. B Mating connectorsScsi daisy chain interface cabling for N drives Nonshielded 68 pin Scsi device connector used on LW drives Scsi daisy chain interface cabling for LW drives GND GND DBP1 +DBP1 Multimode-SE and LVD alternatives Multimode signalsElectrical description LVD output signals Input characteristicsSingle-ended drivers/receivers for LW models Transmitter characteristicsReceiver characteristics Single-ended drivers/receivers for N modelsLow voltage differential I/O circuits General cable characteristicsLW drives Terminator power DrivesTerminator requirements Page Following table provides drive activity LED status Drive activity LEDTechnical 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 Barracuda 36ES2 Product Manual, Rev. B Index Diffsens LED PCB System chassis Barracuda 36ES2 Product Manual, Rev. B