ZHCSEJ7B October 2015 – April 2018 DRV2605L-Q1
PRODUCTION DATA.
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
A_CAL_BEMF[7:0] | |||||||
R/W-0 | R/W-1 | R/W-1 | R/W-0 | R/W-1 | R/W-1 | R/W-1 | R/W-1 |
BIT | FIELD | TYPE | DEFAULT | DESCRIPTION | ||
---|---|---|---|---|---|---|
7-0 | A_CAL_BEMF[7:0] | R/W | 0x6F |
This register contains the rated back-EMF result after execution of auto calibration. The A_CAL_BEMF[7:0] bit is the level of back-EMF voltage that the actuator gives when the actuator is driven at the rated voltage. The DRV2605L-Q1 playback engine uses this the value stored in this bit to automatically determine the appropriate feedback gain for closed-loop operation. Auto-calibration back-EMF (V) = (A_CAL_BEMF[7:0] / 255) × 1.22 V / BEMF_GAIN[1:0] |