Installation

Configure the desired spin up option (Table 3-3)by setting the state of the DELAY_SPIN (Pin 38) and STAGGER_SPIN (Pin 78) inputs on the 80-pin SCA- 2 connector (Figure 3-5). The states of these signals are set by using either hard- wired connections at the backplane or backplane logic.

Spin Up on Power On Options

– Spin Up When Power is Applied

Open

Open

 

 

 

– Spin Up After Delay

Ground

Open

 

 

 

1RVKQP￿￿– Spin Up START Command

Open

Ground

 

 

 

Reserved

Ground

Ground

￿￿￿￿￿￿￿#EVKXKV[The￿drive.'&￿HQTprovides￿5%#6CDNG￿￿￿the￿￿￿￿￿￿￿%QPPGEVQToutput BUSY￿8GTUKQPUOUT￿signal to power a user-supplied act vity

LED

The ou put indicates the drive is performing a SCSI operation. To use this output, connect a user-supplied LED cathode to the BUSY_OUT connection, pin 77 on the SCA Connector (Figure 3-5). The LED anode must be attached to the proper +5 VDCOptionsupply through an appropriateSTAGGERcurrentSPIN(Pin-limiting78)DELAYresistor. _SPIN(Pin38)

Maxtor Atlas 10K III 3-13

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Maxtor 10K III manual Spin Up on Power On Options, Open Ground Reserved