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 |