HA13571FR Datasheet, PDF (7/22 Pages) Hitachi Semiconductor – Combo (Spindle & VCM) Driver for HDD

Table 7 Function Powered on Vs Mode Operation
Function
Spindle enable
Spindle disable
PORN low
Park *¹
Sleep *²
UPPER
BOOSTER
ON
ON
OFF
ON
OFF
UPPER
DRIVERS
ON
OFF
OFF
ON/OFF
OFF
LOWER
DRIVERS
ON
OFF
ON
ON/OFF
OFF
COMP
ON
ON
OFF
ON
OFF
HA13571FR
CONTROL
AMP
ON
OFF
OFF
ON/OFF
OFF
Function
Spindle enable
Spindle disable
PORN low
Park *¹
Sleep *²
ONE
SHOT
ON
ON
OFF
ON
OFF
ICOMP
(Current
comparator)
ON
ON
OFF
ON
OFF
PWM
DECODER
FILTER
ON
ON
OFF
ON
OFF
SMODE
COMP
ON
ON
OFF
ON
OFF
ISENSE
AMP
ON
ON
OFF
ON
OFF
LOGIC
DECODER
ON
ON
ON
ON
ON
Function
VCM enable
VCM disable
Park *¹
Sleep *²
PORN low
PWM
12V and
DECODER 5V COMP
ON
ON
ON
ON
ON
ON
OFF
ON
OFF
ON
FILTER
AMP
ON
ON
ON
OFF
OFF
PORN
DETECTOR
ON
ON
ON
ON
ON
RETRACT
CIRCUIT
OFF
OFF
ON
OFF
ON
TSD
ON
ON
ON
ON
ON
Function
VPCNTL
VREFOUT
BUF
VREFOUT
VCM enable
ON
ON
ON
VCM disable
ON
ON
ON
Park *¹
ON
ON
ON
Sleep *²
ON
OFF
OFF
PORN low
ON
OFF
OFF
Note: 1. Park signal is generated by VPCNTL.
2. Sleep signal is generated by SCNTL and VPCNTL.
SENSE1
ON
ON
ON
OFF
OFF
VCM
DRIVER
ON
OFF
OFF
OFF
OFF
SLEEP
FUNCTION
OFF
OFF
OFF
ON
ON
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