System Register Block
UG0331 User Guide Revision 15.0 685
[12:5] NV_FREQRNG 0x7 Setting of NV_FREQRNG[8:5] or NV_FREQRNG[12:9] determines
the behavior of eNVM BUSY_B with respect to the AHB Bus
interface clock. It can be used to accommodate various frequencies
of the external interface clock, M3_CLK, or it can be used to
advance or delay the data capture due to variation of read access
time of the NVM core. It sets the number of wait states to match with
the Cortex-M3 or Fabric master operating frequency for read
operations. The small counter in the NVM Controller uses this value
to advance or delay the data capture before sampling data.
0000: NOT SUPPORTED
0001: NOT SUPPORTED
0010: Page Read = 3, All other modes (Page program and Page
verify) = 2
0011: Page Read = 4, All other modes (Page program and Page
verify) = 2
0100: Page Read = 5, All other modes (Page program and Page
verify) = 2
0101: Page Read = 6, All other modes (Page program and Page
verify) = 3
0110: Page Read = 7, All other modes (Page program and Page
verify) = 3
0111: Page Read = 8, All other modes (Page program and Page
verify) = 4
1000: Page Read = 9, All other modes (Page program and Page
verify) = 4
1001: Page Read = 10, All other modes (Page program and Page
verify) = 4
1010: Page Read = 11, All other modes (Page program and Page
verify) = 5
1011: Page Read = 12, All other modes (Page program and Page
verify) = 5
1100: Page Read = 13, All other modes (Page program and Page
verify) = 6
1101: Page Read = 14, All other modes (Page program and Page
verify) = 6
1110: Page Read = 15, All other modes (Page program and Page
verify) = 6
1111: Page Read = 16, All other modes (Page program and Page
verify) = 7
NV_FREQRNG[8:5] is used for NVM0 and NV_FREQRNG[12:9] is
used for NVM1.
4:0 SW_ENVMREMAPSIZE 0x11 Size of the segment in eNVM which is to be remapped to location
0x00000000. This logically splits eNVM into a number of segments,
each of which may be used to store a different firmware image, for
example. The region sizes are shown in Table 657, page 686.
Table 656 • ENVM_CR (continued)
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