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 |
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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 |
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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 |
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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. |