DRV201A Datasheet, PDF (18/25 Pages) Texas Instruments – VOICE COIL MOTOR DRIVER FOR CAMERA AUTO FOCUS

DRV201A
SLVSBN6 – JUNE 2013
VCM LSB CURRENT CONTROL REGISTER (VCM_CURRENT_LSB)
Address – 0x04h
DATA BIT
D7
D6
D5
D4
D3
D2
FIELD NAME
VCM_CURRENT[7:0]
READ/WRITE
R/W
RESET VALUE
0
0
0
0
0
0
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D1
D0
0
0
FIELD NAME
VCM_CURRENT[7:0]
VCM current control
00 0000 0000b – 0 mA
00 0000 0001b – 0.1 mA
00 0000 0010b – 0.2 mA
…
11 1111 1110b – 102.2 mA
11 1111 1111b – 102.3 mA
BIT DEFINITION
NOTE
When setting the current in DRV201A both
VCM_CURRENT_MSB and VCM_CURRENT_LSB
registers have to be updated. DRV201A starts updates the
current after LSB register write is completed.
STATUS REGISTER (STATUS)⁽¹⁾
Address – 0x05h
DATA BIT
D7
D6
D5
D4
D3
D2
D1
D0
FIELD NAME
not used
not used
not used
TSD
VCMS
VCMO
UVLO
OVC
READ/WRITE
R
R/WR
R
R
R
R
R
R
RESET VALUE
0
0
0
0
0
0
0
0
(1) Status bits are cleared when device changes it’s state from standby to active. If TSD was tripped the device goes into Standby and will
not allow the transition into Active until the device cools down and TSD is cleared.
FIELD NAME
OVC
UVLO
VCMO
VCMS
TSD
Over current detection
Undervoltage Lockout
Voice coil motor open detected
Voice coil motor short detected
Thermal shutdown detected
BIT DEFINITION
18
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