reserved
| FILTER_BM | Set the filter bias current |
| DAC_AMP | Set the current bias of the DAC |
| FILTER_BW | Set the Miller compensation capacitance of the OPAMP. This compensation capacitance is determined by the off-chip load resistance |
| FILTER_150K_EN | Set the filter type and bandwidth |
| VCM | Set the common mode I of the driver. |