SAS pin descriptions | Seagate ST973451SS, ST936751SS instruction

Table 13: SAS pin descriptions

Pin	Signal name	Signal type


S1	Port A Ground

S2*	+Port A_in	Diff. input pair

S3*	-Port A_in

S4	Port A Ground

S5*	-Port A_out	Diff output pair

S6*	+Port A_out

S7	Port A Ground

S8	Port B Ground

S9*	+Port B_in	Diff. input pair

S10	-Port B_in
*

S11	Port A Ground

S12	-Port B_out	Diff output pair
*

S13	+Port B_out
*

S14	Port B Ground

*- Short pin to support hot plugging NC - No connection in the drive.

9.4.6SAS transmitters and receivers

Pin	Signal name	Signal type


P1*	NC (reserved 3.3Volts)

P2*	NC (reserved 3.3Volts)

P3	NC (reserved 3.3Volts)

P4	Ground

P5	Ground

P6	Ground

P7	5 Volts charge

P8*	5 Volts

P9*	5 Volts

P10	Ground

P11	Ready LED	Open collector out
*

P12	Ground

P13	12 Volts charge

P14	12 Volts
*

P15	12 Volts
*

A typical SAS differential copper transmitter and receiver pair is shown in Figure 15. The receiver is AC cou- pling to eliminate ground shift noise.

TX

Transmitter

100

TY

Differential

Transfer Medium

.01

.01

RX

Receiver

100

RY

Figure 15. SAS transmitters and receivers

58	Savvio 15K SAS Product Manual, Rev. B

Image 66

Seagate ST973451SS, ST936751SS manual SAS pin descriptions, SAS transmitters and receivers

Contents

Savvio 15K SAS 100407739 Rev. BPage Revision status summary sheet Savvio 15K SAS Product Manual, Rev. B Contents Seagate Technology support services Defect and error managementInstallation Interface requirements List of Figures Page Scope Savvio 15K SAS Product Manual, Rev. B Electromagnetic compatibility Applicable standards and reference documentationStandards Electromagnetic susceptibility Australian C-Tick Electromagnetic complianceElectromagnetic compliance for the European Union Korean MIC Reference documents European Union Restriction of Hazardous Substances RoHS Savvio 15K SAS Product Manual, Rev. B General description Standard features Media descriptionPerformance Formatted capacities Factory-installed accessoriesReliability Programmable drive capacity Options Seek performance characteristics Performance characteristicsInternal drive characteristics Access time Gen 2.0 LP data Format command execution time General performance characteristics Start/stop time Prefetch/multi-segmented cache controlCache operation Caching write data Prefetch operation Recoverable Errors Reliability specificationsError rates Unrecoverable Errors Interface errors Reliability and serviceSeek errors Preventive maintenance Performance impact 4 S.M.A.R.TControlling S.M.A.R.T Reporting control Thermal monitor Temperature Log Page 0DhPredictive failures Parameter Code Description Implementation State of the drive prior to testingDST failure definition Invoking DST Extended test Function Code 010b Product warrantyShort test Function Code 001b Log page entries Shipping Product repair and return information Savvio 15K SAS Product Manual, Rev. B DC power requirements Physical/electrical specificationsAC power requirements ST973451SS DC power requirements ST936751SS DC power requirements General DC power requirement notes Power sequencing Conducted noise immunityCurrent profiles Typical ST936751SS current profile Power dissipation ST973451SS in 3 Gbit operationST973451SS in 1.5 Gbit operation ST936751SS in 3 Gbit operation ST936751SS in 1.5 Gbit operation Temperature Environmental limitsRelative humidity Effective altitude sea level Shock and vibrationShock Recommended mounting Air cleanliness VibrationCorrosive environment Acoustics Mechanical specifications Mounting configuration dimensions Defect and error management Drive internal defects/errorsDrive error recovery procedures SAS system errors Background Media Scan Media Pre-ScanDeferred Auto-Reallocation Idle Read After Write Installation Drive orientation Cooling Air flow Drive mounting Grounding Savvio 15K SAS Product Manual, Rev. B SAS features Interface requirements Dual port support Scsi commands supported Commands supported by Savvio SAS family drive Commands supported by Savvio SAS family drive Commands supported by Savvio SAS family drive Commands supported by Savvio SAS family drive Mode Sense data Inquiry dataSavvio inquiry data Page Mode Data Header 04 45 dc cc 00 00 02 Miscellaneous operating features and conditions Miscellaneous featuresMiscellaneous status SAS physical interface Datum B Section C C Section a a Electrical description Physical characteristicsConnector requirements Pin descriptions SAS pin descriptions SAS transmitters and receivers Signal characteristics General interface characteristics Eye masks Eye masks overviewReceive eye mask Jitter tolerance masks Z1 OP Sinusoidal Transmitter signal characteristicsPeak-to Jitter Receiver signal characteristics Maximum allowable jitter Receiver jitter toleranceCompliant jitter test pattern Cjtpat Impedance specifications Impedance requirements Sheet 1 Transmitter characteristics Impedance requirements Sheet 2Electrical TxRx connections = -5,437dB Shows the zero-length test load Receiver characteristics Savvio 15K SAS Product Manual, Rev. B Presales Support Seagate Technology support servicesInternet Technical Support Warranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index NumericsPage SAS See also cooling