DRV2604L Datasheet, PDF (62/73 Pages) Texas Instruments – DRV2604L 2- to 5.2-V Haptic Driver for LRA and ERM with Internal Memory and Smart-Loop Architecture

DRV2604L
SLOS866D – MAY 2014 – REVISED JUNE 2015
www.ti.com
Initialization Setup (continued)
9.3.2.3 Play a PWM or Analog Input Waveform
1. Initialize the device as shown in the Initialization Procedure section.
2. Assert the EN pin (active high) if it was previously deasserted.
3. If register 0x01 already holds the desired value and the STANDBY bit is low, the user can skip this step. Set
the MODE value to 3 (PWM/Analog Mode) at address 0x01. If the STANDBY bit was previously asserted,
this bit should be deasserted (logic low) at this time.
4. Select the input mode (PWM or analog) in the Control3 register (address 0x1D). If this mode was selected
during the initialization procedure, the user can skip this step.
5. Send the desired PWM or analog input waveform sequence from the external source. See the Data Formats
for Waveform Playback section for drive amplitude scaling.
6. When the desired drive sequence is complete, put the device in low-power mode by deasserting the EN pin
or setting the STANDBY bit.
10 Power Supply Recommendations
The DRV2604L device is designed to operate from an input-voltage supply range between 2 V to 5.2 V. The
decoupling capacitor for the power supply should be placed closed to the device pin.
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