Seagate ST3300655LW, ST3146855LC, ST3146855LW, ST3300655LC, ST373455LC manual Disc drive Scsi timing

Page 79

Table 24: Disc drive SCSI timing (Continued)

These values are not current Cheetah 15K.5 SCSI values, but are listed for information only.

 

Waveform

Waveform

 

 

Description

symbol [1]

table [1]

Typical timing

 

 

 

 

 

Next CDB Byte Access (Byte 2 of 10)

T23.10.2

4.5-4

0.59

μs

Next CDB Byte Access (Byte 3 of 10)

T23.10.3

4.5-4

0.11 μs ±1 μs

Next CDB Byte Access (Byte 4 of 10)

T23.10.4

4.5-4

0.12

μs ±1 μs

Next CDB Byte Access (Byte 5 of 10)

T23.10.5

4.5-4

0.11 μs ±1 μs

Next CDB Byte Access (Byte 6 of 10)

T23.10.6

4.5-4

0.11 μs ±1 μs

Next CDB Byte Access (Byte 7 of 10)

T23.10.7

4.5-4

0.13

μs ±1 μs

Next CDB Byte Access (Byte 8 of 10)

T23.10.8

4.5-4

0.12

μs ±1 μs

Next CDB Byte Access (Byte 9 of 10)

T23.10.9

4.5-4

0.12

μs ±1 μs

Next CDB Byte Access (Byte 10 of 10)

T23.10.10

4.5-4

0.12

μs ±1 μs

Data In Byte Transfer (parameter)

T24

4.5-12

0.04

μs

Data Out Byte Transfer (parameter)

T25

4.5-13

0.04

μs

Next Data In Byte Access (parameter)

T26

4.5-12

0.12

μs

Next Data Out Byte Access (parameter)

T27

4.5-13

0.12

μs

Data In Byte Transfer (media) [2]

T28

4.5-12

0.04

μs

Data Out Byte Transfer (media) [2]

T29

4.5-13

0.04

μs

Next Data In Byte access (media [2]

T30

4.5-12

0.12

μs

Next Data Out Byte access (media [2]

T31

4.5-13

0.12

μs

MSG IN Byte Transfer

T32

4.5-5,7,8,14,15

0.04

μs

MSG OUT Byte Transfer

T33

4.5-2

0.04

μs

STATUS Byte Transfer

T34

4.5-5,8,15

0.04

μs

Synchronous Data Transfer Characteristics:

 

 

 

 

Request Signal Transfer Period [3]

–

–

various (800 ns max)

Notes.

[1]See the Timing examples section of the Parallel SCSI Interface Manual.

[2]Maximum SCSI asynchronous interface transfer rate is given in Section 5.2.3 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 10.5. See also the Synchronous data transfer section and the Extended messages section of the Parallel SCSI Interface Manual for a description of synchronous data transfer operation.

Cheetah 15K.5 SCSI Product Manual, Rev. J

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Page 78 Page 80
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Page 78 Page 80
Contents Cheetah 15K.5 Scsi Page Contents Installation Defect and error managementInterface requirements List of Figures Page Seagate Online Support and Services Seagate Technology support servicesScope Electromagnetic susceptibility Applicable standards and reference documentationStandards Electromagnetic compatibilityEuropean Union Restriction of Hazardous Substances RoHS Electromagnetic complianceReference documents General description Drive model number vs. differentiating featuresMedia characteristics Standard featuresReliability PerformanceFormatted capacities Programmable drive capacity Factory installed accessoriesOptions factory installed AccessoriesInternal drive characteristics transparent to user Performance characteristicsScsi performance characteristics visible to user Generalized performance characteristics Format command execution time minutesSeek time Prefetch/multi-segmented cache control Start/stop timeCache operation Prefetch operation Caching write dataUnrecoverable Error Reliability specificationsError rates Recoverable ErrorsSeek errors Reliability and servicePreventive maintenance 4 S.M.A.R.T Hot plugging Cheetah 15K.5 Scsi disc drivesReporting control Controlling S.M.A.R.TPerformance impact MillisecondsThermal monitor Temperature Log page 0Dh Parameter Code DescriptionDrive Self Test DST Invoking 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 ShippingST3300655LC DC power requirements Physical/electrical specificationsAC power requirements DC power requirementsST373455LC DC power requirements ST3146855LC DC power requirementsConducted noise immunity Power sequencingCurrent profile Typical ST3300655LW drive +12V LVD current profile ST3300655LW/ST3300655LC Power dissipationST3146855LW/ST3146855LC ST3146855LC DC current and power vs. Iops LVDST373455LW/ST373455LC ST373455LC DC current and power vs. Iops LVDEffective altitude sea level a. Operating Temperature a. OperatingEnvironmental limits Relative humidityShock Shock and vibrationRecommended mounting Vibration a. Operating-normal Air cleanlinessCorrosive environment Acoustics Mechanical specificationsLC mounting configuration dimensions Drive error recovery procedures Defect and error managementDrive internal defects Read and write retry count maximum recovery times Background Media Scan Scsi systems errorsMedia Pre-Scan Idle Read After Write Deferred Auto-ReallocationFormatting InstallationConfigure drive options Drive ID/option select headerJ5 jumper header on LW models only Drive Front RES Function descriptionCooling Drive orientationGrounding Drive mountingScsi messages supported by Cheetah 15K.5 Scsi family drives Interface requirementsGeneral description Scsi interface messages supportedCommands supported by Cheetah 15K.5 Scsi family drive Scsi interface commands supportedCommands supported by Cheetah 15K.5 Scsi family drive Commands supported by Cheetah 15K.5 Scsi family drive Commands supported by Cheetah 15K.5 Scsi family drive Inquiry Vital Product data Cheetah 15K.5 Scsi family drive Standard Inquiry dataMode Sense data Mode Sense Pages Data ST3300655 Mode sense dataMode Sense Header Data Mode Sense Pages Data ST3146855 Mode sense dataST373455 Mode sense data Scsi bus conditions and other miscellaneous features Scsi bus conditions and miscellaneous features supportedPhysical interface Synchronous data transferDC cable and connector Scsi interface physical description Cable requirements Mating connectorsInterface transfer rates supported Scsi interface cable requirementsMating connectors for LC model drives Mating connectors for LW model drivesScsi daisy-chain interface cabling for LW drives 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 LW 68-conductor LVD P cable signal/pin assignments Active LED OUT 4 LC 80-pin single-ended SE I/O connector pin assignments+5 V Charge GND Active LED OUT 4 LC 80-pin single-ended LVD I/O connector pin assignmentsElectrical description LVD output characteristicsMultimode-SE and LVD alternatives Single-ended drivers/receivers LVD Input characteristicsGeneral cable characteristics Cable characteristics for single-ended circuitsTwist-n-flat cables-into a multi-drive backplane Cables for low voltage differential drivers/receiversLW drives Terminator requirements Terminator powerLC drives Disc drive Scsi timing Disc drive Scsi timingDisc drive Scsi timing Drive activity LED Drive activity LED status Spindle status Command statusNumerics SymbolsPage Page Scsi Page Page
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