This section provides some guidance for getting started with the DRV871x-Q1 for typical
system operation.
- By default, the device is in a low-powered sleep mode with the nSLEEP pin low. In this
mode, all drivers are disabled and no device communication is possible. The nSLEEP pin
should be driven high, to enter its standby state.
- In the standby state, H/W interface
device variants will immediately enter the active state allowing for driver operation
(device settings will be derived from the pin configurations), but SPI interface device
variants will power up with the drivers still disabled.
- On SPI variants, the drivers are enabled through the EN_DRV register bit. But before
enabling drivers, it is recommended to configure the output drivers, sense amplifiers,
setup protection circuits, and run offline diagnostics.
- The half-bridge driver PWM configurations are set through the BRG_CTRL1,2 and
PWM_CTRL1,2 register and will be dependent on the output load configuration.
Additionally the driver gate current level and gate driver configurations can be set
through the IDRV_CTRLx and DRV_CTRLx registers.
- The sense amplifiers are configured through the CSA_CTRL1, 2, and 3 registers.
- The various protection functions can be configured through the VDS_CTRLx and UVOV_CTRL
registers.
- Lastly, before enabling the drivers, offline diagnostics can be performed for open
load and short circuit through the EN_OLSC and the OLSC_CTRL1,2 registers.