HA13571FR Datasheet, PDF (4/22 Pages) Hitachi Semiconductor – Combo (Spindle & VCM) Driver for HDD

HA13571FR
Truth Table
Table 1 Input to Output Drivers
SCNTL1
SCNTL2
H
H
H
L
H
L
L
L
L
H
L
H
L
L
H
H
Note: Z = High impedance
SCNTL3
L
L
H
H
H
L
L
H
SDRVU
L
Z
H
H
Z
L
Z
L
SDRVV
Z
L
L
Z
H
H
Z
L
SDRVW
H
H
Z
L
L
Z
Z
L
Table 2 Spindle Driver Mode Control
SMODE
SIPWM
Spindle Driver Mode
H
Duty ≥ 50%
Linear Mode (High slew rate) *²
H
Duty ≤ 40%
Linear Mode (Low slew rate) *²
M
X
Inductive Sense Mode
L
X
B-EMF Sense in PWM Drive Mode
Note: 1. X = Don’t care
2. Slew rate mode is commutated at synchronized with the up edge of SLOPEC.
Table 3
WDTIN
H or L
M
M
M
VCM Control
VPCNTL
X
H
M
L
VCM Mode
Park
Enable
Disable
Park
Table 4
TEMP
H
L
Temp Output
Status
Warning or TSD
Normal
4