DRV8353: How to use OCP_ACT and CAL_MODE registers?

PY,

Please read the datasheet, it has concise descriptions of all device features:

OCP_ACT:
Additionally, on SPI devices the OCP_ACT register setting can be set to change the VDS_OCP overcurrent
response between linked and individual shutdown modes. When OCP_ACT is 0, a VDS_OCP fault will only
effect the half-bridge in which it occurred. When OCP_ACT is 1, all three half-bridges will respond to a
VDS_OCP fault on any of the other half-bridges. OCP_ACT defaults to 0, individual shutdown mode.

8.3.4.3 Amplifier Calibration Modes:
To minimize DC offset and drift over temperature, a DC calibration mode is provided and enabled through the
SPI register (CSA_CAL_X). This option is not available on hardware interface devices. When the calibration
setting is enabled the inputs to the amplifier are shorted and the load is disconnected. DC calibration can be
done at any time, even when the half-bridges are operating. For the best results, do the DC calibration during the
switching OFF period to decrease the potential noise impact to the amplifier. A diagram of the calibration mode is
shown below. When a CSA_CAL_X bit is enabled, the corresponding amplifier goes to the calibration mode.

Regards,

-Adam