Host Control 2.
| UHS | UHS Mode Select. |
| SIGNAL_V1_8 | 1.8V Signaling Enable. |
| DRIVER_STRENGTH | Driver Strength Select. |
| EXCUTE | Execute Tuning. |
| SAMPLING_CLK | Sampling Clock Select. |
| ASYNCH_INT | Asynchronous Interrupt Enable. |
| PRESET_VAL_EN | Preset Value Enable. |