SMPU region attributes 1 (master structure)
| UR | User read enable: ‘0’: Disabled (user, read acceses are NOT allowed). ‘1’: Enabled (user, read acceses are allowed). Note that this register is constant ‘1’; i.e. user read accesses are ALWAYS allowed. |
| UW | User write enable: ‘0’: Disabled (user, write acceses are NOT allowed). ‘1’: Enabled (user, write acceses are allowed). |
| UX | User execute enable: ‘0’: Disabled (user, execute acceses are NOT allowed). ‘1’: Enabled (user, execute acceses are allowed). Note that this register is constant ‘0’; i.e. user execute accesses are NEVER allowed. |
| PR | Privileged read enable: ‘0’: Disabled (privileged, read acceses are NOT allowed). ‘1’: Enabled (privileged, read acceses are allowed). Note that this register is constant ‘1’; i.e. privileged read accesses are ALWAYS allowed. |
| PW | Privileged write enable: ‘0’: Disabled (privileged, write acceses are NOT allowed). ‘1’: Enabled (privileged, write acceses are allowed). |
| PX | Privileged execute enable: ‘0’: Disabled (privileged, execute acceses are NOT allowed). ‘1’: Enabled (privileged, execute acceses are allowed). Note that this register is constant ‘0’; i.e. privileged execute accesses are NEVER allowed. |
| NS | Non-secure: ‘0’: Secure (secure accesses allowed, non-secure access NOT allowed). ‘1’: Non-secure (both secure and non-secure accesses allowed). |
| PC_MASK_0 | This field specifies protection context identifier based access control for protection context ‘0’. |
| PC_MASK_15_TO_1 | This field specifies protection context identifier based access control. Bit i: protection context i+1 enable. If ‘0’, protection context i+1 access is disabled; i.e. not allowed. If ‘1’, protection context i+1 access is enabled; i.e. allowed. |
| REGION_SIZE | This field specifies the region size: ‘7’: 256 B region (8 32 B subregions) Note: this field is read-only. |
| PC_MATCH | This field specifies if the PC field participates in the ‘matching’ process or the ‘access evaluation’ process: ‘0’: PC field participates in ‘access evalution’. ‘1’: PC field participates in ‘matching’. Note that it is possible to define different access control for multiple protection contexts by using multiple protection structures with the same address region and PC_MATCH set to ‘1’. |
| ENABLED | Region enable: ‘0’: Disabled. A disabled region will never result in a match on the bus transfer address. ‘1’: Enabled. |