Datasheet

Level Trigger

Haptic Waveform

Level Trigger

Haptic Waveform

Cancellation

Haptic Waveform

Edge Trigger

Haptic Waveform

Edge Trigger

Cancellation

DRV2605

www.ti.com

SLOS825C –DECEMBER 2012–REVISED SEPTEMBER 2014

NOTE

The triggered effect must already be selected to take advantage of the lower latency. This

option works best for accelerating a pre-queued high-priority effect (such as a button

press) or for the repeated firing of the same effect (such as scrolling).

7.3.5.6.1 I

C Trigger

Setting the GO bit (in register 0x0C) launches the waveform. The user can cancel the launching of the waveform

by clearing the GO bit.

7.3.5.6.2 Edge Trigger

A low-to-high transition on the IN/TRIG pin sets the GO bit. The playback sequence indicated in the waveform

sequencer plays as normal. The user can cancel the transaction by clearing the GO bit. An additional low-to-high

transition while the GO bit is high also cancels the transaction which clears and resets the GO bit. Clearing the

trigger pin (high-to-low transition) does nothing so the user can send a short pulse without knowing how long the

waveform is. The pulse width should be at least 1 µs to ensure detection.

Figure 13. Edge Trigger Mode

7.3.5.6.3 Level Trigger

The actions of the GO bit directly follow the IN/TRIG pin. When the IN/TRIG pin is high, the GO bit is high. When

the IN/TRIG pin goes low, the GO bit clears. Therefore, a falling edge cancels the transaction. The level trigger

can implement a GPIO-controlled buzz on-off controller if an appropriately long waveform is selected. The user

must hold the IN/TRIG high for the entire duration of the waveform to complete the effect.

Figure 14. Level Trigger Mode

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