devsz

Module Instance Base Address Register Address
qspiregs 0xFF705000 0xFF705014

Offset: 0x14

Access: RW

Important: To prevent indeterminate system behavior, reserved areas of memory must not be accessed by software or hardware. Any area of the memory map that is not explicitly defined as a register space or accessible memory is considered reserved.
Bit Fields
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

Reserved

bytespersubsector

RW 0x10

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

bytesperdevicepage

RW 0x100

numaddrbytes

RW 0x2

devsz Fields

Bit Name Description Access Reset
20:16 bytespersubsector

Number of bytes per Block. This is required by the controller for performing the write protection logic. The number of bytes per block must be a power of 2 number.

RW 0x10
15:4 bytesperdevicepage

Number of bytes per device page. This is required by the controller for performing FLASH writes up to and across page boundaries.

RW 0x100
3:0 numaddrbytes

Number of address bytes. A value of 0 indicates 1 byte.

RW 0x2