Datasheet

MODE[2:0] = 4 (Audio-to-haptics)

MODE[2:0] = 5 (RTP mode)

GO Signal

MODE[2:0] = 3 (PWM and analog input)

Also accessible

(R/W) through I

MODE[2:0] = 1 (External trigger ² edge)

MODE[2:0] = 2 (External trigger ² level)

IN/TRIG (Trigger)

GO Bit

DRV2605

www.ti.com

SLOS825C –DECEMBER 2012–REVISED SEPTEMBER 2014

Figure 17. GO-Signal Logic

7.4.4 Operation During Exceptional Conditions

This section lists different exceptional conditions and the ways that the DRV2605 device operates during these

conditions. This section also describes how the device goes into and out of these states.

7.4.4.1 Operation With No Actuator Attached

In LRA closed-loop mode, if a waveform is played without an actuator connected to the OUT+ and OUT– pins,

the output pins toggle. However, the toggling frequency is not predictable. In LRA open-loop mode, the output

pins toggle at the specified open-loop frequency.

7.4.4.2 Operation With a Short at REG Pin

If the REG pin is shorted to GND, the device automatically shuts down. When the short is removed, the device

starts in the default condition.

7.4.4.3 Operation With a Short at OUT+, OUT–, or Both

If any of the output pins (OUT+ or OUT–) is shorted to V

, GND, or to each other while the device is playing a

waveform, the OC_DETECT bit is asserted and remains asserted until the short is removed. A current-protection

circuit automatically enables to shutdown the current through the short.

If the driver is playing a waveform the DRV2605 device checks for shorts in the output through either a haptic-

playback, auto-calibration, or diagnostics process. If the short occurs when the device is idle, the short is not

detected until the device attempts to run a waveform.

Product Folder Links: DRV2605