ENABLE=0, WP=0, RP=0
Group A Region 21 Access Control Register
| ENABLE | Region enable 0 (0): Group m Region n unit is disabled 1 (1): Group m Region n unit is enabled |
| RP | Read protection 0 (0): Read permission 1 (1): Read protection |
| WP | Write protection 0 (0): Write permission 1 (1): Write protection |
| Reserved | These bits are read as 0000000000000. The write value should be 0000000000000. |