Seagate ST3400755FC, ST3300955FC FC-AL transmitters and receivers, Pin Signal name Signal type

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Table 21: FC-SCA pin descriptions

Pin	Signal name	Signal type

1*	-EN bypass port A	Low Voltage TTL output

2*	12 Volts

3*	12 Volts

4*	12 Volts

5*	-Parallel ESI

6*	Ground[1]
7*	Active LED out	Open collector out

8*	Reserved

9*	Start_1[2]	TTL input
10*	Start_2[2]	TTL input
11*	-EN bypass port B	Low Voltage TTL output

12*	SEL_6	TTL input/output

13*	SEL_5	TTL input/output

14*	SEL_4	TTL input

15*	SEL_3	TTL input/output

16*	Fault LED out	Open collector out

17*	DEV_CTRL_CODE_2[2]	TTL input
18*	DEV_CTRL_CODE_1[2]	TTL input
19*	5 Volts

20*	5 Volts

Pin	Signal name	Signal type

21	12 Volts charge

22	Ground

23	Ground

24*	+Port A_in	FC Diff. input pair

25*	-Port A_in

26	Ground

27*	+Port B_in	FC Diff. input pair

28*	-Port B_in

29	Ground

30*	+Port A_out	FC Diff. output pair

31*	-Port A_out

32	Ground

33*	+Port B_out	FC Diff. output pair

34*	-Port B_out

35	Ground

36	SEL_2	TTL input/output

37	SEL_1	TTL input/output

38	SEL_0	TTL input/output

39	DEV_CTRL_CODE_0[2	TTL input
40	5 Volts charge

*Short pins in mating backpanel connector.

[1]This pin may be connected to external logic to detect the presence of the drive. The drive connects this pin to the common ground.

[2]Pins 9, 10, 17, 18, and 39 are option select pins and are tied high by the drive circuitry. The preferred elec- trical connection at the backplane is either open or grounded (open for the ‘1’ setting, grounded for the ‘0’ setting). Alternatively, these pins may be driven by a 3.3V logic device, pulled up to 3.3V through a pull-up resistor (recommended size of 10k ohm), or grounded through some other means.

9.5.5FC-AL transmitters and receivers

A typical FC-AL differential copper transmitter and receiver pair is shown in Figure 12. The receiver is required to provide the AC coupling to eliminate ground shift noise.

TX

Transmitter 100

TY

.01

Differential

Transfer Medium

.01

RX

Receiver 100

RY

Figure 12. FC-AL transmitters and receivers

Cheetah NS FC Product Manual, Rev. B

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Contents ST3400755FC ST3300955FC Cheetah NS FCPage Cheetah NS FC Product Manual, Rev. B Cheetah NS FC Product Manual, Rev. B Contents Installation Defect and error managementInterface requirements Seagate Technology support services Cheetah NS FC Product Manual, Rev. B List of Figures Page Scope Cheetah NS FC Product Manual, Rev. B Standards Standards, compliance and reference documentsElectromagnetic compatibility Electromagnetic susceptibilityCompliance Ncits TR-19 Reference documentsCheetah NS FC Product Manual, Rev. B General description Media description Standard featuresReliability PerformanceFormatted capacities Programmable drive capacityUser-installed accessories Factory-installed optionsInternal drive characteristics Performance characteristicsAccess time Seek performanceGeneral performance characteristics Format command execution time minutesStart/stop time Cache operation Prefetch/multi-segmented cache controlCaching write data Prefetch operation Error rates Reliability specificationsRecoverable Errors Unrecoverable ErrorsSeek errors Reliability and serviceInterface errors Preventive maintenanceControlling S.M.A.R.T 4 S.M.A.R.TPerformance impact MillisecondsDetermining rate Reporting controlPredictive failures Thermal monitorParameter Code Description State of the drive prior to testingDrive Self Test DST DST failure definitionShort and extended tests Invoking DSTShort test Function Code 001b Extended test Function Code 010bAbort Product warrantyShipping Product repair and return informationCheetah NS FC Product Manual, Rev. B AC power requirements Physical/electrical specificationsDC power requirements DC power requirements for ST3400755FC model Gbit AmpsDC power requirements for ST3300955FC model Gbit Amps General DC power requirement notesConducted noise immunity Power sequencingCurrent profiles Cheetah NS FC Product Manual, Rev. B ST3400755 CURRENT/POWER vs Throughput FC 4GB Power dissipationST3400755FC Random 8 Block ReadsST3300955FC ST3300955 CURRENT/POWER vs Throughput FC 4GBEnvironmental limits TemperatureRelative humidity Effective altitude sea level Package size Packaged/product weight Drop heightShock and vibration ShockRecommended mounting Vibration Air cleanlinessAcoustics Corrosive environmentChina Restriction of Hazardous Substances RoHS Directive X表示该部件（于同类物品程度上）所含的危险和有毒物质中国RoHS MCV标准所定义的门槛值。Mounting configuration dimensions Mechanical specificationsCheetah NS FC Product Manual, Rev. B Drive internal defects/errors Defect and error managementDrive error recovery procedures 77.87 Background Media Scan FC-AL system errorsMedia Pre-Scan Idle Read After Write Deferred Auto-ReallocationDrive ID/option selection InstallationDrive orientation CoolingAir flow Drive mountingGrounding Cheetah NS FC Product Manual, Rev. B Fibre Channel link service frames FC-AL featuresLink services supported Type of frame Interface requirementsFibre Channel task management responses Fibre Channel task management functionsFC Scsi FCP response codes Function name Response code NPort login Plogi payload Bytes Fibre Channel port loginFibre Channel Process Login Fibre Channel port login acceptNPort Login Accept ACC payload Bytes Process Login Plri payloadFibre Channel fabric login Fibre Channel Process Login AcceptProcess Login Accept ACC payload Bytes Fabric Login Flogi payload BytesFabric Login Accept ACC payload Bytes Fibre Channel fabric accept loginFibre Channel Arbitrated Loop options Dual port supportFC-AL options supported Option SupportedSupported commands Command code Command name Scsi commands supportedVerify error recovery page 07h Cheetah NS FC Product Manual, Rev. B Temperature page 0Dh Inquiry data Mode Sense dataCheetah NS FC inquiry data Bytes Data hex Page Mode Sense 10 Byte Header Data Mode Data Header Miscellaneous features Miscellaneous operating features and conditionsSupported Feature or condition Miscellaneous statusFC-AL physical interface Physical characteristicsPhysical description Electrical description Connector requirementsPin descriptions Pin Signal name Signal type FC-SCA pin descriptions Pin Signal name Signal typeFC-AL transmitters and receivers Fault LED Out PowerActive LED Out Enable port bypass signalsMotor start controls 11 SEL6 through SEL0 ID lines Parallel Enclosure Services Interface ESIArbitrated loop physical address Alpa values SettingHex Dec TTL input characteristics Signal characteristicsDevice control codes FC Differential output LED driver signalsFC Differential input Receive eye diagram Eye diagram data values Link rate GHz Internet Seagate Technology support servicesPresales Support Technical SupportData Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Numerics IndexFAN Flogi Plogi SEL ID See also cooling

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