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| HA13614FH Datasheet, PDF (13/26 Pages) Hitachi Semiconductor – Combo (Spindle & VCM) Driver | |||
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Start-up of the Spindle motor
⢠Not using external commutation mode
SPNENAB
EXTCOM
Low
COMM
PHASE
IU
0
HA13614FH
IV
0
IW
0
Synchronous driving*
B-EMF sensing driving
⢠Using external commutation mode
SPNENAB
EXTCOM
COMM
PHASE
IU
0
IV
0
IW
0
Synchronous driving*
B-EMF sensing driving
Note: âSynchronous drivingâ is defined as the period after changing SPNENAB = L to H until
the first positive edge of the PHASE signal.
Figure 8 Start-up of the Spindle Motor
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