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MD23, MD24

EMULEX CORPORATION

MD23, MD24

Data bus: None (SCSI to ESDI interface)

Size: Drive card

Hard drives supported: SCSI to four RLL ESDI drives

Floppy drives supported: None

CONNECTIONS

MD23

MD24

34-pin control cable connector-hard drive

P1

P1

20-pin data cable connector-drive 0

J2

J2

20-pin data cable connector-drive 1

J3

J3

10-pin connector-user panel (factory use only)

J4

J6

14-pin connector-test (factory use only)

J5

J8

50-pin SCSI connector- to host adapter

J6

J9

4-pin connector-DC power

J7

J10

20-pin data cable connector-drive 2

J8

J4

20-pin data cable connector-drive 3

J9

J5

10-pin connector-user panel (factory use only)

J10

J7

USER CONFIGURABLE SETTINGS

Function

Location

Setting

 

Not used

SW1/switch 4

N/A

Sector size set to 512 bytes

SW1/switch 5

open

 

Sector size set to 256 bytes

SW1/switch 5

closed

Spindle motor starts on power-up

SW1/switch 6

open

 

Spindle motor starts on command

SW1/switch 6

closed

Soft error reporting enabled

SW1/switch 7

open

 

Soft error reporting disabled

SW1/switch 7

closed

SCSI parity check disabled

SW1/switch 8

open

 

SCSI parity check enabled

SW1/switch 8

closed

SCSI ADDRESS

SCSI ID

SW1/switch 1

SW1/switch 2

SW1/switch 3

 

0

off

off

off

 

1

on

off

off

 

2

off

on

off

 

3

on

on

off

 

4

off

off

on

 

5

on

off

on

 

6

off

on

on

7

on

on

on

MISCELLANEOUS TECHNICAL NOTES

Note: For the SCSI termination power option, a # 1N5817 diode must be installed at socket CR2 and JP1 must be closed