Maxtor ATLAS 10K III - Manual (Page 39)

Installation
Maxtor Atlas 10K III 3-13
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.
6CDNG   Spin Up on Power On Options
 #EVKXKV[ .'& HQT 5%#  %QPPGEVQT 8GTUKQPU
The drive provides the output BUSY_OUT signal to power a user-supplied activity
LED.
The output 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 VDC supply through an appropriate current-limiting resistor.
Option STAGGER_SPIN (Pin 78) DELAY_SPIN (Pin 38)
1RVKQP  – Spin Up When Power is Applied Open Open
1RVKQP  – Spin Up After Delay Ground Open
1RVKQP  – Spin Up on START Command Open Ground
Reserved Ground Ground