DRV2604L Datasheet, PDF (43/73 Pages) Texas Instruments – DRV2604L 2- to 5.2-V Haptic Driver for LRA and ERM with Internal Memory and Smart-Loop Architecture

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DRV2604L
SLOS866D – MAY 2014 – REVISED JUNE 2015
8.6.7 Overdrive Time Offset (Address: 0x0D)
Figure 39. Overdrive Time Offset Register
7
BIT FIELD
7-0 ODT
6
5
4
3
2
1
0
ODT[7:0]
R/W-0
Table 9. 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
8.6.8 Sustain Time Offset, Positive (Address: 0x0E)
Figure 40. 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 10. 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
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