DRV2605L-Q1 Datasheet, PDF (40/67 Pages) Texas Instruments – Automotive Haptic Driver for LRA and ERM

DRV2605L-Q1
SLOS874A – OCTOBER 2015 – REVISED OCTOBER 2015
www.ti.com
7.6.14 Audio-to-Vibe Minimum Output Drive (Address: 0x14)
Figure 42. Audio-to-Vibe Minimum Output Drive Register
7
R/W-0
6
R/W-0
5
R/W-0
4
3
ATH_MIN_DRIVE[7:0]
R/W-1
R/W-1
2
R/W-0
1
R/W-0
Table 17. Audio-to-Vibe Minimum Output Drive Register Field Descriptions
0
R/W-1
BIT FIELD
7-0 ATH_MIN_DRIVE[7:0]
TYPE
R/W
DEFAULT DESCRIPTION
0x19
This bit sets the minimum output level that is applied to the actuator drive
engine.
ATH_MIN_DRIVE (%) = ATH_MIN_DRIVE[7:0] / 255 × 100%
7.6.15 Audio-to-Vibe Maximum Output Drive (Address: 0x15)
Figure 43. Audio-to-Vibe Maximum Output Drive Register
7
6
5
4
3
2
1
0
ATH_MAX_DRIVE[7:0]
R/W-1
Table 18. Audio-to-Vibe Maximum Output Drive Register Field Descriptions
BIT FIELD
7-0 ATH_MAX_DRIVE[7:0]
TYPE
R/W
DEFAULT
0xFF
DESCRIPTION
This bit sets the maximum output level that is applied to the actuator drive
engine.
ATH_MAX_DRIVE (%) = ATH_MAX_DRIVE[7:0] / 255 × 100%
7.6.16 Rated Voltage (Address: 0x16)
Figure 44. Rated Voltage Register
7
R/W-0
6
R/W-0
5
R/W-1
4
3
RATED_VOLTAGE[7:0]
R/W-1
R/W-1
2
R/W-1
1
R/W-1
0
R/W-0
BIT FIELD
7-0 RATED_VOLTAGE[7:0]
Table 19. Rated Voltage Register Field Descriptions
TYPE
R/W
DEFAULT
0x3E
DESCRIPTION
This bit sets the reference voltage for full-scale output during closed-loop
operation. The auto-calibration routine uses this register as an input, therefore
this register must be written with the rated voltage value of the motor before
calibration is performed. This register is ignored for open-loop operation
because the overdrive voltage sets the reference for that case. Any
modification of this register value should be followed by calibration to set
A_CAL_BEMF appropriately.
See the Rated Voltage Programming section for calculating the correct register
value.
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