DRV201_15 Datasheet, PDF (15/29 Pages) Texas Instruments – DRV201 Voice Coil Motor Driver for Camera Auto Focus

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7.6 Register Maps
7.6.1 Register Address Map
DRV201
SLVSB25C – AUGUST 2011 – REVISED JUNE 2015
REGISTER
ADDRESS (HEX)
NAME
1
01
not used
2
02
CONTROL
3
03
VCM_CURRENT_MSB
4
04
VCM_CURRENT_LSB
5
05
STATUS
6
06
MODE
7
07
VCM_FREQ
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
DEFAULT
VALUE
0000 0010
0000 0000
0000 0000
0000 0000
0000 0000
1000 0011
DESCRIPTION
Control register
Voice coil motor MSB current control
Voice coil motor LSB current control
Status register
Mode register
VCM resonance frequency
7.6.2 Control Register (Control) Address – 0x02h
Figure 14. Control Register (Control) Address – 0x02h 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
not used
R
0
D3
not used
R
0
D2
not used
R
0
D1
EN_RING
R/W
1
D0
RESET
R/W
0
FIELD NAME
RESET
EN_RING
Table 2. Bit Definitions
BIT DEFINITION
Forced software reset (reset all registers to default values) and device goes into STANDBY. RESET
bit is automatically cleared when written high.
0 – inactive
1 – device goes to STANDBY
Enables ringing compensation.
0 – disabled
1 – enabled
7.6.3 VCM MSB Current Control Register (VCM_Current_MSB) Address – 0x03h
Figure 15. VCM MSB Current Control Register (VCM_Current_MSB) Address – 0x03h 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
not used
R
0
D3
not used
R
0
D2
not used
R
0
D1
D0
VCM_CURRENT[9:8]
R/W
0
0
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