BLOCK0 data register 2.
| RPT4_RESERVED1_0 | Reserved. |
| WDT_DELAY_SEL | Represents whether RTC watchdog timeout threshold is selected at startup. 1: selected. 0: not selected. |
| SPI_BOOT_CRYPT_CNT | Represents whether SPI boot encrypt/decrypt is disabled or enabled. Odd number of 1: enabled. Even number of 1: disabled. |
| SECURE_BOOT_KEY_REVOKE0 | Represents whether revoking first secure boot key is enabled or disabled. 1: enabled. 0: disabled. |
| SECURE_BOOT_KEY_REVOKE1 | Represents whether revoking second secure boot key is enabled or disabled. 1: enabled. 0: disabled. |
| SECURE_BOOT_KEY_REVOKE2 | Represents whether revoking third secure boot key is enabled or disabled. 1: enabled. 0: disabled. |
| KEY_PURPOSE_0 | Represents the purpose of Key0. |
| KEY_PURPOSE_1 | Represents the purpose of Key1. |