NXP Semiconductors KE1xF Series, Reference Manual, Page: 455 / 1483

SCG_RCCR field descriptions
Field Description
31–28
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
27–24
SCS
System Clock Source
Selects the clock source generating the system clock in Run mode. Attempting to select a clock that is not
valid will be ignored. Selecting a different clock source when in Run mode requires that clock source to be
enabled first and be valid before system clocks are allowed to switch to that clock source.
0000 Reserved
0001 System OSC (SOSC_CLK)
0010 Slow IRC (SIRC_CLK)
0011 Fast IRC (FIRC_CLK)
0100 Reserved
0101 Reserved
0110 System PLL (SPLL_CLK)
0111 Reserved
23–20
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
19–16
DIVCORE
Core Clock Divide Ratio
0000 Divide-by-1
0001 Divide-by-2
0010 Divide-by-3
0011 Divide-by-4
0100 Divide-by-5
0101 Divide-by-6
0110 Divide-by-7
0111 Divide-by-8
1000 Divide-by-9
1001 Divide-by-10
1010 Divide-by-11
1011 Divide-by-12
1100 Divide-by-13
1101 Divide-by-14
1110 Divide-by-15
1111 Divide-by-16
15–12
Reserved
This field is reserved. Software should write 0 to these bits to maintain compatibility.
This field is reserved.
11–8
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
7–4
DIVBUS
Bus Clock Divide Ratio
0000 Divide-by-1
0001 Divide-by-2
0010 Divide-by-3
0011 Divide-by-4
0100 Divide-by-5
Table continues on the next page...
Chapter 19 System Clock Generator (SCG)
Kinetis KE1xF Sub-Family Reference Manual, Rev. 4, 06/2019
NXP Semiconductors 455