Seagate ST336918N, ST318418N, ST318438LW, ST336938LW manual Gnd

Page 75

Barracuda 36ES2 Product Manual, Rev. B								65
Table 13:	“N” model, single-ended I/O, 50 conductor, signal/contact assignments

		Connector		Cable			Connector
Signal		contact		conductor			contact	Signal
name [1]		number [13]		number [12]			number [13]	name [1]


GND		1		1		2	2	–DB0
GND		3		3		4	4	–DB1
GND		5		5		6	6	–DB2
GND		7		7		8	8	–DB3
GND		9		9		10	10	–DB4
GND		11		11		12	12	–DB5
GND		13		13		14	14	–DB6
GND		15		15		16	16	–DB7
GND		17		17		18	18	–DBP
GND		19		19		20	20	GND
GND		21		21		22	22	GND
GND		23		23		24	24	GND
NC [10]		25*		25		26	26	TERMPWR
GND		27		27		28	28	GND
GND		29		29		30	30	GND
GND		31		31		32	32	–ATN
GND		33		33		34	34	GND
GND		35		35		36	36	–BSY
GND		37		37		38	38	–ACK
GND		39		39		40	40	–RST
GND		41		41		42	42	–MSG
GND		43		43		44	44	–SEL
GND		45		45		46	46	–C/D
GND		47		47		48	48	–REQ
GND		49		49		50	50	–I/O

*CAUTION: Connector contact 25 must not be connected to ground at the host end or the drive end of the cable. If the I/O cable should accidently be plugged in upside down, terminator power on pin 26 will be shorted to ground.

Notes [ ]: See page following Table 15.

Image 75

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 Australian C-Tick Korean MICTaiwanese Bsmi General description Reliability Standard featuresMedia characteristics PerformanceFactory installed accessories Options factory installedProgrammable drive capacity Performance characteristics Ultra2 Scsi Ultra160 Scsi Start/stop timePrefetch/multi-segmented cache control 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 Physical/electrical specifications AC power requirementsDC power requirements Power sequencing Conducted noise immunity3 12 V Current profile +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 Air cleanliness Barracuda 36ES2 Product Manual, Rev. B VibrationAcoustics Dimension Table Mechanical specificationsMounting configuration dimensions Barracuda 36ES2 Product Manual, Rev. B Defect and error management Drive error recovery proceduresDrive internal defects 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 Drive orientation CoolingAir flow 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 DC cable and connector 2 REQ/ACK offsetPhysical interface 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 signals Electrical descriptionMultimode-SE and LVD alternatives 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 characteristicsTerminator power Drives Terminator requirementsLW drives Page Following table provides drive activity LED status Drive activity LEDTechnical Support Seagate Technology support services Online ServicesAutomated Services Presales SupportCustomer Service CSO USA/Canada/Latin America Support ServicesEuropean Support Services Africa/Middle East Support Services Asia/Pacific Support ServicesCall Center Toll-free Direct dial Barracuda 36ES2 Product Manual, Rev. B Index Diffsens LED PCB System chassis Barracuda 36ES2 Product Manual, Rev. B