/tr>
<tr>
<td align="left">[23:16] </td><td align="left">IREGION </td><td align="left">Instruction region. RAZ. Armv7-M only supports a unified MPU. </td></tr>
<tr>
<td align="left">[15:8] </td><td align="left">DREGION </td><td align="left">Number of regions supported by the MPU. If this field reads-as-zero the processor does not implement an MPU. </td></tr>
<tr>
<td align="left">[7:1] </td><td align="left">- </td><td align="left">Reserved. </td></tr>
<tr>
<td align="left">[0] </td><td align="left">SEPARATE