DRV2605L-Q1 Datasheet, PDF (34/67 Pages) Texas Instruments – Automotive Haptic Driver for LRA and ERM

DRV2605L-Q1
SLOS874A – OCTOBER 2015 – REVISED OCTOBER 2015
www.ti.com
7.6.2 Mode (Address: 0x01)
Figure 30. Mode Register
7
DEV_RESET
R/W-0
6
STANDBY
R/W-1
BIT FIELD
7 DEV_RESET
6 STANDBY
5-3 Reserved
2-0 MODE
5
4
3
Reserved
2
1
0
MODE[2:0]
R/W-0
Table 5. Mode Register Field Descriptions
TYPE
R/W
R/W
DEFAULT
0
1
DESCRIPTION
Device reset. Setting this bit performs the equivalent operation of power
cycling the device. Any playback operations are immediately interrupted,
and all registers are reset to the default values. The DEV_RESET bit self-
clears after the reset operation is complete.
Software standby mode
0: Device ready
1: Device in software standby
R/W
0
0: Internal trigger
Waveforms are fired by setting the GO bit in register 0x0C.
1: External trigger (edge mode)
A rising edge on the IN/TRIG pin sets the GO Bit. A second rising
edge on the IN/TRIG pin cancels the waveform if the second rising
edge occurs before the GO bit has cleared.
2: External trigger (level mode)
The GO bit follows the state of the external trigger. A rising edge on
the IN/TRIG pin sets the GO bit, and a falling edge sends a cancel. If
the GO bit is already in the appropriate state, no change occurs.
3: PWM input and analog input
A PWM or analog signal is accepted at the IN/TRIG pin and used as
the driving source. The device actively drives the actuator while in
this mode. The PWM or analog input selection occurs by using the
N_PWM_ANALOG bit.
4: Audio-to-vibe
An AC-coupled audio signal is accepted at the IN/TRIG pin. The
device converts the audio signal into meaningful haptic vibration. The
AC_COUPLE and N_PWM_ANALOG bits should also be set.
5: Real-time playback (RTP mode)
The device actively drives the actuator with the contents of the
RTP_INPUT[7:0] bit in register 0x02.
6: Diagnostics
Set the device in this mode to perform a diagnostic test on the
actuator. The user must set the GO bit to start the test. The test is
complete when the GO bit self-clears. Results are stored in the
DIAG_RESULT bit in register 0x00.
7: Auto calibration
Set the device in this mode to auto calibrate the device for the
actuator. Before starting the calibration, the user must set the all
required input parameters. The user must set the GO bit to start the
calibration. Calibration is complete when the GO bit self-clears. For
more information see the Auto Calibration Procedure section.
34
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