BLOCK1 data register $n.
| DBIAS_VOL_GAP_VALUE2 | Stores the high 3 bits of dbias_vol_gap. |
| DBIAS_VOL_GAP_SIGN | Stores the sign bit of dbias_vol_gap. |
| MAC_RESERVED_2 | Reserved. |
| WAFER_VERSION_MINOR | Stores the wafer version minor. |
| WAFER_VERSION_MAJOR | Stores the wafer version major. |
| DISABLE_WAFER_VERSION_MAJOR | Disables check of wafer version major. |
| FLASH_CAP | Stores the flash cap. |
| FLASH_TEMP | Stores the flash temp. |
| FLASH_VENDOR | Stores the flash vendor. |