DRV2604L Datasheet, PDF (41/73 Pages) Texas Instruments – DRV2604L 2- to 5.2-V Haptic Driver for LRA and ERM with Internal Memory and Smart-Loop Architecture

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DRV2604L
SLOS866D – MAY 2014 – REVISED JUNE 2015
8.6.3 Real-Time Playback Input (Address: 0x02)
Figure 35. Real-Time Playback Input Register
7
6
5
4
3
2
1
0
RTP_INPUT[7:0]
R/W-0
Table 5. Real-Time Playback Input Register Field Descriptions
BIT FIELD
7-0 RTP_INPUT[7:0]
TYPE
R/W
DEFAULT DESCRIPTION
0
This field is the entry point for real-time playback (RTP) data. The
DRV2604L playback engine drives the RTP_INPUT[7:0] value to the load
when MODE[2:0] = 5 (RTP mode). The RTP_INPUT[7:0] value can be
updated in real-time by the host controller to create haptic waveforms. The
RTP_INPUT[7:0] value is interpreted as signed by default, but can be set to
unsigned by the DATA_FORMAT_RTP bit in register 0x1D. When the
haptic waveform is complete, the user can idle the device by setting
MODE[2:0] = 0, or alternatively by setting STANDBY = 1.
8.6.4 HI_Z (Address: 0x03)
Figure 36. HI_Z Register
7
6
5
4
3
2
1
0
Reserved
HI_Z
Reserved
R/W-0
BIT FIELD
7-5 Reserved
4 HI_Z
3-0 Reserved
Table 6. HI_Z Register Field Descriptions
TYPE DEFAULT DESCRIPTION
R/W
0
This bit sets the output driver into a true high-impedance state. The device
must be enabled to go into the high-impedance state. When in hardware
shutdown or standby mode, the output drivers have 15 kO to ground. When
the HI_Z bit is asserted, the hi-Z functionality takes effect immediately, even
if a transaction is taking place.
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