Register 13: Flash Configuration Register (FLASHCONF), offset 0xFC8
The FLASHCONF register allows the user to enable or disable various properties of the Flash. The
force bits, FBFON and FBFOFF, can be used to test code performance and execution by turning the
prefetch buffers on and subsequently forcing them off.
Flash Configuration Register (FLASHCONF)
Base 0x400F.D000
Offset 0xFC8
Type RW, reset 0x0000.0000
16171819202122232425262728293031
FPFOFFFPFONreservedCLRTVreservedSPFEFMMEreserved
RWRWRORORWRORORORORORORORORWRWROType
0000000000000000Reset
0123456789101112131415
reserved
ROROROROROROROROROROROROROROROROType
0000000000000000Reset
DescriptionResetTypeNameBit/Field
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
0ROreserved31
Flash Mirror Mode Enable
DescriptionValue
Flash mirror mode is disabled.0
Flash mirror mode feature is enabled. Access to the lower banks
is translated to upper.
1
0x0RWFMME30
Single Prefetch Mode Enable
DescriptionValue
A 4x256-bit prefetch buffer is enabled and used.0
A single 2x256-bit prefetch buffer is enabled and used.1
0x0RWSPFE29
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
0x000ROreserved28:21
Clear Valid Tags
This is a self-clearing bit.
DescriptionValue
No effect.0
Clear valid tags in the prefetch buffer.1
0RWCLRTV20
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
0ROreserved19:18
645June 18, 2014
Texas Instruments-Production Data
Tiva
™
TM4C1294NCPDT Microcontroller