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Connectors

The electrical connectors are located as
shown.

Pin 1

Electrical Connectors (rear view) 80 Pin SCA models

Power Pin 1

4 3 2 1

Pin 2

Pin 35

SCSI Pin 1

Aux Connector Pin 1

Electrical Connectors (rear view) 68 Pin models

4 3 2 1

Power Pin 1

SCSI Pin 1

Electrical Connectors (rear view) 50 Pin models

Pin 1

(15X)2 mm

2.54 mm*

Jumper Pin locations (front view) - all models
* Not available on 80 Pin SCA

Note: See  electrical interface specifications

for power pin assignment.

The DC power connector is designed to mate 

with AMP part 1-480424 (using AMP pins P/N
350078-4).  Equivalent connectors may  be
used.
Pin assignments are shown below, as viewed
from the end of the drive.

4

3

2

1

Pin

Voltage

1

+12 V

2

GND

3

GND

4

+5  V

Option Block

Jumper Settings
Jumper position and function are as shown below.  Pin pitch is 2mm.
Termination power enable 2.54mm pitch.

0

1

Reserved

Reserved

10 12 14 16 18

Ground

Ground

Ground

Termination 
Power Enable

1

3

5

7

11 13 15 17 19 21 23 25 27 29 31

2

4

6

8

20 22 24 26 28 30 32

Enable Active Termination

+5V

2

SCSI 
Address

Not 
Used

Blank

Ground

External Activity LED

Write Protect

Auto Start Delay

Disable Sync Negotiations

Disable SCSI Parity

Disable Unit Attention

Reserved

Reserved

Reserved

Auto Start

50 Pin Single Ended Front Option Block and TermPower Block.

Reserved

Reserved

Ground Ground

Ground

Termination 
Power Enable

1 3

5

7

11 13 15 17 19 21 23 25 27 29 31

2 4

6

8 10 12 14 16 18 20 22 24 26 28 30 32

Enable Active Termination

+5V

0

1

2

SCSI Address

Blank

Auto Start

Ground

External Activity LEDWrite Protect

Auto Start Delay

Disable Sync Negotiations

Disable SCSI Parity

Disable Unit Attention

3

Disable Wide 
Negotiations

Reserved

Reserved

68 Pin Single Ended Front Option Block and TermPower Block.
68 Pin Differential Option Jumper Block.

Ground

Ground

1 3

5

7

11 13 15 17 19 21 23 25 27 29 31

2 4

6

8 10 12 14 16 18 20 22 24 26 28 30 32

+5V

0

1

2

SCSI Address

Blank

Auto Start

Ground

External Activity LED

Write Protect

Auto Start Delay

Disable Sync Negotiations

Disable SCSI Parity

Disable Unit Attention

3

Disable Wide 
Negotiations

Reserved

Reserved

Reserved

80 Pin SCA-2 Front Option Jumper Block.

Содержание DGHS-318220

Страница 1: ...d multitasking applications M M Low command overhead M M Read ahead caching M M Improved data throughput M M ECC on the fly EOTF M M Industry standard mounting M M Ease of installation M M Predictive Failure Analysis S M A R T Compliant M M High reliability and availability IBM OEM has introduced a new range of drives intended for advanced storage applications which demand fast access to large amo...

Страница 2: ... 2 4 6 8 20 22 24 26 28 30 32 Enable Active Termination 5V 2 SCSI Address Not Used Blank Ground External Activity LED Write Protect Auto Start Delay Disable Sync Negotiations Disable SCSI Parity Disable Unit Attention Reserved Reserved Reserved Auto Start 50 Pin Single Ended Front Option Block and TermPower Block Reserved Reserved Ground Ground Ground Termination Power Enable 1 3 5 7 11 13 15 17 1...

Страница 3: ... Delay Start Start Multiplier off off Yes 0 off on No N A on off Yes 10 on on No N A Auto Startup Modes selectable by Auto Start Delay Pin Combinations PACKAGING The drive must be protected against electrostatic Discharge especially when being handled The safest way to avoid damage is to put the drive in an anti static bag before ESD wrist straps etc are removed Drives should only be shipped in ap...

Страница 4: ...apacity blocks block bytes drive 512 18 351 959 040 35 843 670 514 18 283 057 100 35 570 150 520 18 132 478 000 34 870 150 522 18 102 432 780 34 678 990 524 18 098 346 920 34 538 830 528 18 177 133 920 34 426 390 536 18 242 658 160 34 034 810 688 18 760 955 040 27 268 830 732 18 832 742 280 25 727 790 User bytes logical block 512 to 732 Mode Select Options Certain parameters are alterable using th...

Страница 5: ...hment 80 pin SCA 2 models use an AMP connector PN 5 917593 9 that is compatible with the specification of Single Connector Attachment for Small SCSI Disk Drives SFF 8046 It can transfer data in both 8 bit Narrow and 16 bit wide modes Note The SCA 2 connector is not mechanically compatible with the 50 pin A connector or the 68 pin P connector as defined in the ANSI SCSI standard This connector is i...

Страница 6: ... power SCSI Bus Termination Power Short Circuit Protection The ANSI SCSI specification recommends for devices that optionally supply TERMPWR to include current limited protection for accidental short circuits It also recommends that the maximum current available for TERMPWR should not exceed 2 Amps UL has a different requirement that they call the 8 Amp rule This rule states that when a power sour...

Страница 7: ... if the unpackaged 9 11GB drive is not subjected to an 2 millisecond half sine wave shock greater than 150Gs applied to all three axis one direction at a time Additionally no damage will occur if the unpackaged 18 22GB drive is not subjected to a 2 millisecond half sine wave shock greater than 140Gs applied to all three axis one direction at a time For the 1 0 models no degradation in A weighted i...

Страница 8: ...temperature must not be exceeded at the worst case drive and system operating conditions with the drive randomly seeking reading and writing Reliability temperatures must not be exceeded at the nominal drive and system operating conditions with the drive randomly seeking reading and writing Maximum and Reliable Operating Temperature Limits Maximum Optimum Disk Enclosure Top 149o F 65o C 122o F 50o...

Страница 9: ... trademark of AMP Incorporated Other company product and service names may be trademarks or service marks of others Produced by European SIT Lab International Business Machines Corporation 1997 This data sheet is not a substitute for the full production specification which should be used when detailed information is required Product Description data represents IBM s design objectives and is provid...

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