DRV201_15 Datasheet, PDF (17/29 Pages) Texas Instruments – DRV201 Voice Coil Motor Driver for Camera Auto Focus

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DRV201
SLVSB25C – AUGUST 2011 – REVISED JUNE 2015
FIELD NAME
OVC
UVLO
VCMO
VCMS
TSD
Table 5. Bit Definitions
Over current detection
Undervoltage Lockout
Voice coil motor open detected
Voice coil motor short detected
Thermal shutdown detected
BIT DEFINITION
7.6.6 Mode Register (Mode) Address – 0x06h
Figure 18. Mode Register (Mode) Address – 0x06h Map
DATA BIT
FIELD NAME
READ/WRITE
RESET VALUE
D7
not used
R
0
D6
not used
R
0
D5
not used
R
0
D4
D3
D2
PWM_FREQ[2:0]
R/W
R/W
R/W
0
0
0
D1
PWM/LIN
R/W
0
D0
RING_MO
DE
R/W
0
FIELD NAME
RING_MODE
PWM/LIN
PWM_FREQ[2:0]
Table 6. Bit Definitions
BIT DEFINITION
Ringing compensation settling time
0 – 2x(1/f_VCM)
1 – 1x(1/f_VCM)
Driver output stage in linear or PWM mode
0 – PWM mode
1 – Linear mode
Output stage PWM switching frequency
000 – 0.5 MHz
001 – 1 MHz
010 – N/A
011 – 2 MHz
100 – N/A
101 – 4.8 MHz
110 – 6.0 MHz
111 – 4 MHz
7.6.7 VCM Resonance Frequency Register (VCM_FREQ) Address – 0x07h
Figure 19. VCM Resonance Frequency Register (VCM_FREQ) Address – 0x07h Map
DATA BIT
FIELD NAME
READ/WRITE
RESET VALUE
D7
D6
D5
D4
D3
D2
D1
D0
VCM_FREQ[7:0]
R/W
1
0
0
0
0
0
1
1
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