HA13614FH Datasheet, PDF (8/26 Pages) Hitachi Semiconductor – Combo (Spindle & VCM) Driver

HA13614FH
Table 3 Truth Table
Input
Driver Output
OTSD
Enable
12VGOOD
*¹
Low
STAND BY SPNENAB
×*²
×
BRAKE
×
RETRACT
×
VCMENAB
×
Spindle
Driver
Braking
VCM
Driver
Cut off
Retract
Driver
On
Power
Switch
Cut off
Disable Low
×
×
×
×
×
Braking Cut off On
Cut off
Disable High
Low
×
×
×
×
Braking Cut off Cut off Cut off
Disable High
High
0
0
0
0
Cut off Cut off Cut off On
Disable High
High
0
1
0
0
Braking Cut off Cut off On
Disable High
High
1
×
0
0
On
Cut off Cut off On
Disable High
High
0
0
0
1
Cut off On
Cut off On
Disable High
High
0
1
0
1
Braking On
Cut off On
Disable High
High
1
×
0
1
On
On
Cut off On
Disable High
High
0
0
1
×
Cut off Cut off On
On
Disable High
High
0
1
1
×
Braking Cut off On
On
Disable High
High
1
×
1
×
On
Cut off On
On
Note: 1. The 12VGOOD terminal is open drain output type. The 12VGOOD signal output is determined by
the power monitor output for 12 V power supply, POR output and OTSD signal as shown in the
table below.
12 V Supply
Cut off
×
×
Normal
POR
×
Low
×
High
OTSD
×
×
Enable
Disable
12VGOOD
Low
Low
Low
High
2. The symbol “×” means “Don’t care”.
Table 4 Commutation Time
SRCTL2
SRCTL3
Commutation Time (s)
0
0
24 × (128 / fclk)
0
1
16 × (128 / fclk)
1
0
12 × (128 / fclk)
1
1
No slew rate control
Note: The “fclk” is the frequency on pin “CLK”. (Recommendation: 20 MHz)
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