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CRD-5300-001, CRD-5300-002, CRD-5300-003

CMD TECHNOLOGY, INC.

CRD-5300-001, CRD-5300-002, CRD-5300-003

Card Type

Hard drive controller card

Processor

RISC

Maximum Onboard Memory

128MB DRAM

Hard Drives supported

Fourteen Fast SCSI devices (5300-001)

Fourteen Fast/Wide SCSI devices (5300-002)

Fourteen Fast/Wide SCSI devices (5300-003)

Floppy drives supported

None

Data Bus

Fast/Wide SCSI (5300-001)

Fast/Wide SCSI (5300-002)

Fast/Wide/Differential SCSI (5300-003)

Form-factor

3.5 inch

RAID levels supported

0, 1, 0+1, 4 and 5, JBOD

CONNECTIONS

Function

Location

Proprietary SCSI/serial/power connector to back plane

CN1

DRAM CONFIGURATION

Size

DRAM

4MB

(1) 1 x 36

8MB

(1) 2 x 36

16MB

(1) 4 x 36

32MB

(1) 8 x 36

64MB

(1) 16 x 36

128MB

(1) 32 x 36

Back plane

CONNECTIONS

Function

Location

Function

Location

Front panel connector - future use

CN1

Power connector - battery

CN6

68-pin SCSI connector - host in

CN2

Termination power

TPWR

68-pin SCSI connector - host out

CN3

Main power

MPWR

50/68-pin SCSI connector - channel 1

CN4

3-pin connector - UART

UART

50/68-pin SCSI connector - channel 0

CN5

 

 

Note: Connectors CN4 and CN5 differ on each model (see header). Controller plugs into back of back plane.

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured - do not alter (manufacturer’s test)

TST

N/A

»

Battery connected to battery connector (CN6)

W1

Open

 

Battery connector (CN6) disabled

W1

Closed

»

Factory configured - do not alter

W2

Open

J11 PIN-OUT (ENVIRONMENTAL CONTROL SYSTEM)

Pin

Description

Pin

Description

1

Ground

3

VCC

2

Data

4

CLK

Note: This connector will be implemented in future firmware releases.

J12 PIN-OUT (UNINTERRUPTIBLE POWER SOURCE)

Pin

Description

Pin

Description

1

Loss of AC power

3

Ground

2

Low battery warning

 

 

Note: This connector allows signals from an uninterruptible power source to be sent to CRD-5300.

J13 PIN-OUT (EXTERNAL TEMPERATURE SENSOR)

Pin

Description

Pin

Description

1

Power

3

Ground

2

External

 

 

Note: This connector allows an external temperature sensor to replace Q1 on the back panel.

MISCELLANEOUS TECHNICAL NOTES

The CRD-5300 will not operate without an attached battery back-up or an uninterruptible power supply. Also, terminating drive buses by installing on-board resistors is not recommended because the end drive on the bus cannot be removed during a "hot swap" without leaving the bus unterminated.