14.2.2.3 GPNVM[1]: Memory Plane Addresses Exchange (MPAE) (Plane 0 or Plane 1)

When the device contains two Flash controllers, SEFC0 and SEFC1, the Flash memory is constituted of two planes, Plane 0 and Plane 1.

The Flash controller register interfaces have fixed addresses in the system memory map. However, their associated memory planes are contiguous in the system memory map but can be dynamically swapped by changing the value of the bit MPAE.

When planes are swapped for dual-boot purposes, the SEFC follows the Flash plane it is connected to. MPAE has no effect on a device with a single Flash controller ((SEFC0)/Plane 0).