DRV201_15 Datasheet, PDF (18/29 Pages) Texas Instruments – DRV201 Voice Coil Motor Driver for Camera Auto Focus

DRV201
SLVSB25C – AUGUST 2011 – REVISED JUNE 2015
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FIELD NAME
VCM_FREQ[7:0]
Table 7. Bit Definitions
BIT DEFINITION
VCM mechanical ringing frequency for the ringing compensation can be selected with the below
formula. The formula gives the VCM_FREQ[7:0] register value in decimal which should be rounded to
the nearest integer.
19200
VCM _ FREQ = 383 -
F_res
(1)
Default VCM mechanical ringing frequency is 76.4 Hz.
19200
VCM _ FREQ = 383 -
= 131.69 Þ 132 Þ '1000 0011'
76.4
(2)
18
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