DRV2625 Datasheet, PDF (42/77 Pages) Texas Instruments – DRV2625 Ultra Low Power Closed-Loop LRA/ERM Haptic Driver with Built-In Library

DRV2625
SLOS879A – DECEMBER 2015 – REVISED DECEMBER 2015
www.ti.com
8.7.13 Address: 0x0C
Figure 54. 0x0C
7
6
5
4
3
2
Reserved
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 16. Address: 0x0C
1
0
GO[0]
R/W-0
BIT FIELD
7-1 Reserved
0 GO
TYPE
R/W
R/W
DEFAULT DESCRIPTION
0
Reserved
0
This bit is used to fire processes. The process fired by the GO bit is selected by the MODE
parameter. The primary function of this bit is to fire playback of the waveform identifiers in he
waveform sequencer (registers 0x0F to 0x16), in which case, this bit an be thought of a
software trigger for haptic waveforms. The GO bit remains high until the process has
completed. Clearing the GO bit during waveform playback cancels the process immediately.
Using the external trigger will also assert the GO bit in a similar way as if it was written. The
GO bit can be used to play effects using the waveform sequencer, run auto-calibration, and run
diagnostics.
8.7.14 Address: 0x0D
Figure 55. 0x0D
7
6
5
4
3
2
LIB_SEL[0]
Reserved
PLAYBACK_IN
TERVAL[0]
Reserved
R/W-0
R/W-0
R/W-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
1
0
DIG_MEM_GAIN[1:0]
R/W-0
BIT FIELD
7 LIB_SEL
6 Reserved
5 PLAYBACK_INTERVAL
4-2 Reserved
1-0 DIG_MEM_GAIN[1:0]
Table 17. Address: 0x0D
TYPE
R/W
R/W
R/W
R/W
R/W
DEFAULT DESCRIPTION
0
Library selection bit.
0
LRA Library - Closed Loop (Lib A).
1
ERM Library - Open Loop (Lib B).
0
Reserved
0
Sets the internal memory playback interval to either 5 ms or 1 ms.
0
5 ms.
1
1 ms.
0
Reserved
0
This parameter allows for proportionally scaling down (attenuating) the effects stored in the
internal library to simplify the customization of haptics. This parameter is ignored in RTP mode.
0
Play effect with 100% strength.
1
Play effect with 75% strength.
2
Play effect with 50% strength.
3
Play effect with 25% strength.
42
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