DRV2624 Datasheet, PDF (51/79 Pages) Texas Instruments – DRV2624 Ultra Low Power Closed-Loop LRA/ERM Haptic Driver with Internal Memory

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DRV2624
SLOS893A – DECEMBER 2015 – REVISED DECEMBER 2015
8.7.27 Address: 0x19
Figure 71. 0x19
7
6
5
4
3
Reserved
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 28. Address: 0x19
2
1
0
WAV_SEQ_MAIN_LOOP[2:0]
R/W-0
BIT FIELD
TYPE DEFAULT DESCRIPTION
7-3 Reserved
R/W
0
Reserved
2-0 WAV_SEQ_MAIN_LOOP[2:0] R/W
0
Loop waveform sequencer for the amount of times specified in this register. The effects will be
played until an identifier of 0 is reached, or until all 8 identifiers have been played. This
sequence of identifiers are the ones that will be looped.
0
No loop, play the identifier sequence only once.
1
Loop once.
2
Loop twice.
3
Loop 3 times.
4
Loop 4 times.
5
Loop 5 times.
6
Loop 6 times.
7
Inifinite loops. (stop with trigger or GO bit).
8.7.28 Address: 0x1A
Figure 72. 0x1A
7
6
5
4
3
2
1
0
ODT[7:0]
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
BIT FIELD
7-0 ODT[7:0]
Table 29. Address: 0x1A
TYPE
R/W
DEFAULT DESCRIPTION
0
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 take away overdrive
time from the library waveforms. The maximum voltage value in the library waveform is
automatically determined to be the overdrive portion. This register will only be useful in open
loop mode. Overdrive is automatic for closed loop mode. The offset is interpreted as two’s
complement, so the time offset may be positive or negative. OverDrive Time Offset (ms) =
ODT[7:0] × PLAYBACK_INTERVAL.
8.7.29 Address: 0x1B
Figure 73. 0x1B
7
6
5
4
3
2
1
0
SPT[7:0]
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
BIT FIELD
7-0 SPT[7:0]
Table 30. Address: 0x1B
TYPE
R/W
DEFAULT DESCRIPTION
0
Adds a time offset to the positive sustain portion of the library waveforms. Some motors have
faster/slower response time than others, therefore this register allows the user to add or take
away positive sustain time from the library waveforms. Any positive voltage value other than the
overdrive portion will be considered a sustain positive value. The offset is interpreted as two’s
complement, so the time offset may be positive or negative. Sustain Time Positive Offset (ms)
= SPT[7:0] × PLAYBACK_INTERVAL.
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