DRV2605L-Q1 Datasheet, PDF (37/67 Pages) Texas Instruments – Automotive Haptic Driver for LRA and ERM

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DRV2605L-Q1
SLOS874A – OCTOBER 2015 – REVISED OCTOBER 2015
7.6.7 Overdrive Time Offset (Address: 0x0D)
Figure 35. Overdrive Time Offset Register
7
BIT FIELD
7-0 ODT
6
5
4
3
2
1
0
ODT[7:0]
R/W-0
Table 10. Overdrive Time Offset Register Field Descriptions
TYPE
R/W
DEFAULT DESCRIPTION
0
This bit adds a time offset to the overdrive portion of the library
waveforms. Some motors require more overdrive time than others,
therefore this register allows the user to add or remove overdrive time
from the library waveforms. The maximum voltage value in the library
waveform is automatically determined to be the overdrive portion. This
register is only useful in open-loop mode. Overdrive is automatic for
closed-loop mode. The offset is interpreted as 2s complement, therefore
the time offset can be positive or negative.
Overdrive Time Offset (ms) = ODT[7:0] × PLAYBACK_INTERVAL
See the Control5 (Address: 0x1F) section for PLAYBACK_INTERVAL
details.
7.6.8 Sustain Time Offset, Positive (Address: 0x0E)
Figure 36. Sustain Time Offset, Positive Register
7
6
5
4
3
2
1
0
SPT[7:0]
R/W-0
BIT FIELD
7-0 SPT
Table 11. Sustain Time Offset, Positive Register Field Descriptions
TYPE
R/W
DEFAULT DESCRIPTION
0
This bit adds a time offset to the positive sustain portion of the library
waveforms. Some motors have a faster or slower response time than
others, therefore this register allows the user to add or remove positive
sustain time from the library waveforms. Any positive voltage value other
than the overdrive portion is considered as a sustain positive value. The
offset is interpreted as 2s complement, therefore the time offset can positive
or negative.
Sustain-Time Positive Offset (ms) = SPT[7:0] ×
PLAYBACK_INTERVAL
See the Control5 (Address: 0x1F) section for PLAYBACK_INTERVAL
details.
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