5.3.2Each mode setting
(1)Setting terminator power supply
Refer to Table 5.2 for controlling the supply of power from the drive to the SCSI terminator power source (TERMPOW).
For information on NP model, refer to Figures 5.2 and 5.3.
Table 5.2 Setting SCSI terminator power supply (NP model)
Supply on/off of SCSI terminator power from | Pin pair 23/24 of CN2 |
HDD | (TRMPOW/TRMPOW) |
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Supply off | Open |
Supply on | Short (*1) |
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*1. Set at factory shipment. |
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For NC model, the function of the terminator power supply setting is not supported.
(2)Motor start mode
Set how to control the starting of the HDD spindle motor according to Table 5.3. This setting only determines the operation mode when the power supply is turned on or the microcode is downloaded. In both modes, stopping or restarting the spindle motor can be controlled by specifying the START/STOP UNIT command.
Table 5.3 Motor start mode setting
| NC model (*3) | NP model | ||
Start timing of the spindle motor |
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Pin 38 of CN1 | Pin 78 of CN1 | Pin pair 11/12 of | ||
| CN2 | |||
| (RMT START) | (DYLD START) | ||
| (GND/RMSTART) | |||
Starting of the motor is controlled | Short | Open or Short | Open | |
with the START/STOP UNIT | ||||
command. |
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The motor is started immediately | Open | Open | Short (*1) | |
after the power supply is turned on or | ||||
after the microcode is downloaded. |
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The motor is started after the elapse |
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of a delay time that is based on the |
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SCSI ID. The delay time is provided | Open | Short | (*2) | |
immediately after the power supply is | ||||
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turned on or after the microprogram |
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is downloaded. |
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*1. Set at factory shipment.
*2. For NP model, delay starting of spindle motor is supported by the CHANGE DEFINITION command only.
*3. To set the setting terminals on NC models to short, apply voltage ranging
Refer to Subsection 3.1.10 “START/STOP UNIT (1B)” of the SCSI Logical Interface Specifications for details of the START/STOP UNIT command.
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